Tom Tromey [Thu, 26 May 2022 16:17:02 +0000 (10:17 -0600)]
Remove "-break-insert -r" tests
PR mi/14270 points out that mi-break.exp has some tests for an
unimplemented "-r" switch for "-break-insert". This switch was never
implemented, and is not documented -- though it is mentioned in a
comment in the documentation. This patch removes the test and the doc
comment.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=14270
Tom de Vries [Mon, 6 Jun 2022 17:27:46 +0000 (19:27 +0200)]
[gdb] Name arch selftests more clearly
When running some all archs selftest I get:
...
$ gdb -q -batch -ex "maint selftest unpack_field_as_long"
Running selftest unpack_field_as_long::A6.
...
By now I know that A6 is an arc architecture, but for others that's less
clear.
Fix this by using unpack_field_as_long::arc::A6 instead.
This then introduces redundant names like arm::arm, so try to avoid those,
though I'm not entirely convinced that that's worth the trouble.
This introduces the following new names:
...
+Running selftest unpack_field_as_long::am33_2::am33-2.
+Running selftest unpack_field_as_long::arc::A6.
+Running selftest unpack_field_as_long::arc::A7.
+Running selftest unpack_field_as_long::arc::EM.
+Running selftest unpack_field_as_long::arc::HS.
+Running selftest unpack_field_as_long::arm::ep9312.
+Running selftest unpack_field_as_long::arm::iwmmxt.
+Running selftest unpack_field_as_long::arm::iwmmxt2.
+Running selftest unpack_field_as_long::arm::xscale.
+Running selftest unpack_field_as_long::bpf::xbpf.
+Running selftest unpack_field_as_long::frv::fr400.
+Running selftest unpack_field_as_long::frv::fr450.
+Running selftest unpack_field_as_long::frv::fr500.
+Running selftest unpack_field_as_long::frv::fr550.
+Running selftest unpack_field_as_long::frv::simple.
+Running selftest unpack_field_as_long::frv::tomcat.
+Running selftest unpack_field_as_long::iq2000::iq10.
+Running selftest unpack_field_as_long::m32c::m16c.
+Running selftest unpack_field_as_long::mep::c5.
+Running selftest unpack_field_as_long::mep::h1.
+Running selftest unpack_field_as_long::nds32::n1.
+Running selftest unpack_field_as_long::nds32::n1h.
+Running selftest unpack_field_as_long::nds32::n1h_v2.
+Running selftest unpack_field_as_long::nds32::n1h_v3.
+Running selftest unpack_field_as_long::nds32::n1h_v3m.
+Running selftest unpack_field_as_long::z80::ez80-adl.
+Running selftest unpack_field_as_long::z80::ez80-z80.
+Running selftest unpack_field_as_long::z80::gbz80.
+Running selftest unpack_field_as_long::z80::r800.
+Running selftest unpack_field_as_long::z80::z180.
...
Tested on x86_64-linux.
Tom de Vries [Mon, 6 Jun 2022 17:27:46 +0000 (19:27 +0200)]
[gdb] Enable some more print_one_insn selftests
In print_one_insn_test we have this cluster of skipped tests:
...
case bfd_arch_ia64:
case bfd_arch_mep:
case bfd_arch_mips:
case bfd_arch_tic6x:
case bfd_arch_xtensa:
return;
...
Enable some of these, and document in more detail why they're enabled or
skipped.
Likewise, document bfd_arch_or1k because it's an odd case.
Tested on x86_64-linux.
Tom de Vries [Mon, 6 Jun 2022 17:27:46 +0000 (19:27 +0200)]
[gdb] Fix maint selftest -v print_one_insn
When running the print_one_insn selftests with -v, I get:
...
$ gdb -q -batch -ex "maint selftest -v print_one_insn"
Running selftest print_one_insn::A6.
.shor 0x783eRunning selftest print_one_insn::A7.
trap_s 0x1Running selftest print_one_insn::ARC600.
.shor 0x783eRunning selftest print_one_insn::ARC601.
Running selftest print_one_insn::ARC700.
trap_s 0x1Running selftest print_one_insn::ARCv2.
trap_s 0x1Running selftest print_one_insn::EM.
trap_s 0x1Running selftest print_one_insn::HS.
trap_s 0x1Running selftest print_one_insn::Loongarch32.
...
The insn is written to gdb_stdout, and there is code in the selftest to add a
newline after the insn, which writes to stream().
The stream() ui_file points into a string buffer, which the disassembler uses
before writing to gdb_stdout, so writing into it after the disassembler has
finished has no effect.
Fix this by using gdb_stdlog and debug_printf (which is what the unit test
infrastructure itself uses) instead, such that we have:
...
Running selftest print_one_insn::A6.
.shor 0x783e
Running selftest print_one_insn::A7.
trap_s 0x1
Running selftest print_one_insn::ARC600.
.shor 0x783e
Running selftest print_one_insn::ARC601.
Running selftest print_one_insn::ARC700.
trap_s 0x1
Running selftest print_one_insn::ARCv2.
trap_s 0x1
Running selftest print_one_insn::Loongarch32.
...
Note: I've also removed the printing of arch_name, which would give
us otherwise the redundant:
...
Running selftest print_one_insn::A6.
arc .shor 0x783e
Running selftest print_one_insn::A7.
arc trap_s 0x1
...
Tested on x86_64-linux.
Andrew Burgess [Mon, 6 Jun 2022 11:16:56 +0000 (12:16 +0100)]
gdb/testsuite: add missing skip_python_tests call in py-doc-reformat.exp
In commit:
commit
51e8dbe1fbe7d8955589703140ca5eba7b4f1bd7
Date: Mon May 16 19:26:54 2022 +0100
gdb/python: improve formatting of help text for user defined commands
the test that was added (gdb.python/py-doc-reformat.exp) was missing a
call to skip_python_tests. As a result, this test would fail for any
GDB built within Python support.
This commit adds a call to skip_python_tests.
GDB Administrator [Mon, 6 Jun 2022 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom Tromey [Sun, 5 Jun 2022 16:09:42 +0000 (10:09 -0600)]
Remove obsolete Python 2 comment
I found a comment that referred to Python 2, but that is now obsolete
-- the code it refers to is gone. I'm checking in this patch to
remove the comment.
There's a similar comment elsewhere, but I plan to remove that one in
another patch I'm going to submit shortly.
GDB Administrator [Sun, 5 Jun 2022 00:00:14 +0000 (00:00 +0000)]
Automatic date update in version.in
Alan Modra [Sat, 4 Jun 2022 09:07:20 +0000 (18:37 +0930)]
asan: null dereference in coff_count_linenumbers
* coffgen.c (coff_count_linenumbers): Don't segfault when asymbol
the_bfd is NULL.
Alan Modra [Sat, 4 Jun 2022 09:01:54 +0000 (18:31 +0930)]
asan: uninitialised write in bfd_mach_o_write_contents
* mach-o.c (bfd_mach_o_write_contents): Always set
bfd_mach_o_dyld_info_command *_off fields.
Tom de Vries [Sat, 4 Jun 2022 11:17:33 +0000 (13:17 +0200)]
[gdb/ada] Fix literal truncation
Make sure we error out on overflow instead of truncating in all cases.
Tested on x86_64-linux, with a build with --enable-targets=all.
Tom de Vries [Sat, 4 Jun 2022 11:17:33 +0000 (13:17 +0200)]
[gdb/m2] Fix UB and literal truncation
Rewrite parse_number to use ULONGEST instead of LONGEST, to fix UB errors as
mentioned in PR29163.
Furthermore, make sure we error out on overflow instead of truncating in all
cases.
Tested on x86_64-linux, with a build with --enable-targets=all.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29163
Tom de Vries [Sat, 4 Jun 2022 11:17:33 +0000 (13:17 +0200)]
[gdb/rust] Fix literal truncation
Make sure we error out on overflow instead of truncating in all cases.
I've used as overflow string: "Integer literal is too large", based
on what I found at
<rust-lang/rust>/src/test/ui/parser/int-literal-too-large-span.rs
but perhaps someone has a better idea.
Tested on x86_64-linux, with a build with --enable-targets=all.
Tom de Vries [Sat, 4 Jun 2022 11:17:33 +0000 (13:17 +0200)]
[gdb/pascal] Fix literal truncation
Make sure we error out on overflow instead of truncating in all cases.
The current implementation of parse_number contains a comment about PR16377,
but that's related to C-like languages. In absence of information of whether
the same fix is needed for pascal, take the conservative approach and keep
behaviour for decimals unchanged.
Tested on x86_64-linux, with a build with --enable-targets=all.
Tom de Vries [Sat, 4 Jun 2022 11:17:33 +0000 (13:17 +0200)]
[gdb/go] Fix literal truncation
Make sure we error out on overflow instead of truncating in all cases.
The current implementation of parse_number contains a comment about PR16377,
but that's related to C-like languages. In absence of information of whether
the same fix is needed for go, take the conservative approach and keep
behaviour for decimals unchanged.
Tested on x86_64-linux, with a build with --enable-targets=all.
Tom de Vries [Sat, 4 Jun 2022 11:17:33 +0000 (13:17 +0200)]
[gdb/fortran] Fix literal truncation
As mentioned in commit
5b758627a18 ("Make gdb.base/parse_number.exp test all
architectures"):
...
There might be a bug that 32-bit fortran truncates 64-bit values to
32-bit, given "p/x 0xffffffffffffffff" returns "0xffffffff".
...
More concretely, we have:
...
$ for arch in i386:x86-64 i386; do \
gdb -q -batch -ex "set arch $arch" -ex "set lang fortran" \
-ex "p /x 0xffffffffffffffff"; \
done
The target architecture is set to "i386:x86-64".
$1 = 0xffffffffffffffff
The target architecture is set to "i386".
$1 = 0xffffffff
...
Fix this by adding a range check in parse_number in gdb/f-exp.y.
Furthermore, make sure we error out on overflow instead of truncating in all
other cases.
Tested on x86_64-linux.
Tom de Vries [Sat, 4 Jun 2022 11:17:33 +0000 (13:17 +0200)]
[gdb/c] Fix type of
2147483648 and literal truncation
[ Assuming arch i386:x86-64, sizeof (int) == 4,
sizeof (long) == sizeof (long long) == 8. ]
Currently we have (decimal for 0x80000000):
...
(gdb) ptype
2147483648
type = unsigned int
...
According to C language rules, unsigned types cannot be used for decimal
constants, so the type should be long instead (reported in PR16377).
Fix this by making sure the type of
2147483648 is long.
The next interesting case is (decimal for 0x8000000000000000):
...
(gdb) ptype
9223372036854775808
type = unsigned long
...
According to the same rules, unsigned long is incorrect.
Current gcc uses __int128 as type, which is allowed, but we don't have that
available in gdb, so the strict response here would be erroring out with
overflow.
Older gcc without __int128 support, as well as clang use an unsigned type, but with
a warning. Interestingly, clang uses "unsigned long long" while gcc uses
"unsigned long", which seems the better choice.
Given that the compilers allow this as a convience, do the same in gdb
and keep type "unsigned long", and make this explicit in parser and test-case.
Furthermore, make sure we error out on overflow instead of truncating in all
cases.
Tested on x86_64-linux with --enable-targets=all.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=16377
Tom de Vries [Sat, 4 Jun 2022 11:17:32 +0000 (13:17 +0200)]
[gdb/testsuite] Test more values in gdb.base/parse_numbers.exp
Currently we only test value 0xffffffffffffffff in test-case
gdb.base/parse_numbers.exp.
Test more interesting values, both in decimal and hex format, as well as
negative decimals for language modula-2.
This results in an increase in total tests from 15572 to 847448 (55 times
more tests).
Balance out the increase in runtime by reducing the number of architectures
tested: only test one architecture per sizeof longlong/long/int/short
combination, while keeping the possibility intact to run with all
architectures (through setting a variable in the test-case)
Results in slight reduction of total tests: 15572 -> 13853.
Document interesting cases in the expected results:
- wrapping from unsigned to signed
- truncation
- PR16377: using unsigned types to represent decimal constants in C
Running the test-case with a gdb build with -fsanitize=undefined, we trigger
two UB errors in the modula-2 parser, filed as PR29163.
Tested on x86_64-linux with --enable-targets=all.
Tom de Vries [Sat, 4 Jun 2022 09:19:01 +0000 (11:19 +0200)]
[gdb/testsuite] Fix ERROR in gdb.ctf/funcreturn.exp
On openSUSE Tumbleweed (with gcc-12, enabling ctf tests) I run into:
...
ERROR: tcl error sourcing src/gdb/testsuite/gdb.ctf/funcreturn.exp.
ERROR: tcl error code NONE
ERROR: Unexpected arguments: \
{print v_double_func} \
{[0-9]+ = {double \(\)} 0x[0-9a-z]+.*} \
{print double function} \
}
...
The problem is a curly brace as fourth argument to gdb_test, which errors out
due to recently introduced more strict argument checking in gdb_test.
Fix the error by removing the brace.
Though this fixes the error for me, due to PR29160 I get only FAILs, so I can't
claim proper testing on x86_64-linux.
Tom de Vries [Sat, 4 Jun 2022 09:16:22 +0000 (11:16 +0200)]
[gdb/testsuite] Fix gdb.threads/manythreads.exp with check-read1
When running test-case gdb.threads/manythreads.exp with check-read1, I ran
into this hard-to-reproduce FAIL:
...
[New Thread 0x7ffff7318700 (LWP 31125)]^M
[Thread 0x7ffff7321700 (LWP 31124) exited]^M
[New T^C^M
^M
Thread 769 "manythreads" received signal SIGINT, Interrupt.^M
[Switching to Thread 0x7ffff6d66700 (LWP 31287)]^M
0x00007ffff7586a81 in clone () from /lib64/libc.so.6^M
(gdb) FAIL: gdb.threads/manythreads.exp: stop threads 1
...
The matching in the failing gdb_test_multiple is done in an intricate way,
trying to pass on some order and fail on another order.
Fix this by rewriting the regexps to match one line at most, and detecting
invalid order by setting and checking state variables.
Tested on x86_64-linux.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29177
Tom de Vries [Sat, 4 Jun 2022 09:11:37 +0000 (11:11 +0200)]
[gdb] Fix warning in print_one_insn::ez80-adl
When running selftest print_one_insn::ez80-adl we run into this warning:
...
Running selftest print_one_insn::ez80-adl.
warning: Unable to determine inferior's software breakpoint type: couldn't
find `_break_handler' function in inferior. Will be used default software \
breakpoint instruction RST 0x08.
...
Fix this by explicitly handling bfd_arch_z80 in print_one_insn_test.
Tested on x86_64-linux.
GDB Administrator [Sat, 4 Jun 2022 00:00:13 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom Tromey [Fri, 3 Jun 2022 16:35:30 +0000 (10:35 -0600)]
Use bool for evregpy_no_listeners_p
I noticed that evregpy_no_listeners_p should return a bool. This
patch makes this change. I'm checking it in.
Alan Modra [Fri, 3 Jun 2022 13:17:50 +0000 (22:47 +0930)]
asan: heap buffer overflow in _bfd_mips_elf_section_from_shdr
* elfxx-mips.c (_bfd_mips_elf_section_from_shdr): Sanity check
intopt.size and remaining bytes in section for reginfo.
Alan Modra [Fri, 3 Jun 2022 13:10:21 +0000 (22:40 +0930)]
Re: ubsan: undefined shift in frag_align_code
This one needs the same fix too.
* config/tc-i386.h (MAX_MEM_FOR_RS_ALIGN_CODE): Avoid signed
integer overflow.
Tom de Vries [Fri, 3 Jun 2022 13:34:50 +0000 (15:34 +0200)]
[gdb] Fix warning in foreach_arch selftests
When running the selftests, I run into:
...
$ gdb -q -batch -ex "maint selftest"
...
Running selftest execute_cfa_program::aarch64:ilp32.
warning: A handler for the OS ABI "GNU/Linux" is not built into this
configuration of GDB. Attempting to continue with the default aarch64:ilp32
settings.
...
and likewise for execute_cfa_program::i8086 and
execute_cfa_program::ia64-elf32.
The warning can easily be reproduced outside the selftests by doing:
...
$ gdb -q -batch -ex "set arch aarch64:ilp32"
...
and can be prevented by first doing "set osabi none".
Fix the warning by setting osabi to none while doing selftests that iterate
over all architectures.
This causes a regression in the print_one_insn selftests for the ARC
architecture.
The problem is pre-existing, and can be demonstrated (already without this
patch) using:
...
$ gdb -q -batch -ex "set osabi none" -ex "maint selftest print_one_insn::A6"
Running selftest print_one_insn::A6.
Self test failed: Cannot access memory at address 0x0
Ran 1 unit tests, 1 failed
$
...
For ARC, we use the generic case in print_one_insn_test, containing this code:
...
int kind = gdbarch_breakpoint_kind_from_pc (gdbarch, &pc);
...
insn = gdbarch_sw_breakpoint_from_kind (gdbarch, kind, &bplen);
...
The problem is that with osabi linux we trigger:
...
static int
arc_linux_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
{
return trap_size;
}
...
but with osabi none:
...
arc_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
{
size_t length_with_limm = gdb_insn_length (gdbarch, *pcptr);
...
which needs access to memory, and will consequently fail.
Fix this in print_one_insn_test, in the default case, by iterating over
supported osabi's to makes sure we trigger arc_linux_breakpoint_kind_from_pc
which will give us a usable instruction to disassemble.
Tested on x86_64-linux.
Tom de Vries [Fri, 3 Jun 2022 13:34:50 +0000 (15:34 +0200)]
Revert "[gdb] Fix warning in foreach_arch selftests"
This reverts commit
fc18b1c5afd ("[gdb] Fix warning in foreach_arch
selftests").
The commit introduced regressions for an --enable-targets=all build:
...
Running selftest print_one_insn::A6.^M
Self test failed: Cannot access memory at address 0x0^M
...
and while investigating those I realized that the commit
fc18b1c5afd
complicates things by trying to set the current osabi.
So, revert the patch in preparation for a simpler solution.
Tested on x86_64-linux.
Jan Beulich [Fri, 3 Jun 2022 08:17:35 +0000 (10:17 +0200)]
x86: exclude certain ISA extensions from v3/v4 ISA
Like TBM and LWP, XOP and FMA4 also shouldn't be included in v3.
Like AVX512-4VNNIW, AVX512-4FMAPS also shouldn't be included in v4.
Roland McGrath [Fri, 3 Jun 2022 05:59:23 +0000 (22:59 -0700)]
gdb: LoongArch: Remove nonportable #include
Don't use gregset.h in *-tdep.c since it's not usable on
hosts that don't have <sys/procfs.h>. It's not needed by
this file, and should only be needed by *-nat.c files.
Alan Modra [Fri, 3 Jun 2022 03:42:01 +0000 (13:12 +0930)]
Re: asan: mips_gprel_reloc segfault
Similarly for the elf mips support.
* elf32-mips.c (mips_elf_final_gp): Don't segfault on symbols
in any of the bfd_is_const_section sections.
* elf64-mips.c (mips_elf64_final_gp): Likewise.
* elfn32-mips.c (mips_elf_final_gp): Likewise.
Alan Modra [Fri, 3 Jun 2022 03:02:00 +0000 (12:32 +0930)]
asan: mips_gprel_reloc segfault
Not just the undefined section has a NULL owner, the absolute section
has too. Which means we can't find output_bfd for __gp. Also, may as
well test directly for output_bfd == NULL.
* coff-mips.c (mips_gprel_reloc): Don't segfault on any of
bfd_is_const_section sections.
GDB Administrator [Fri, 3 Jun 2022 00:00:11 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Thu, 2 Jun 2022 18:40:06 +0000 (20:40 +0200)]
[gdb/testsuite] Detect change instead of init in gdb.mi/mi-var-block.exp
On openSUSE Tumbleweed with target board unix/-m32, I run into:
...
PASS: gdb.mi/mi-var-block.exp: step at do_block_test 2
Expecting: ^(-var-update \*[^M
]+)?(\^done,changelist=\[{name="foo",in_scope="true",type_changed="false",has_more="0"},
{name="cb",in_scope="true",type_changed="false",has_more="0"}\][^M
]+[(]gdb[)] ^M
[ ]*)
-var-update *^M
^done,changelist=[{name="foo",in_scope="true",type_changed="false",has_more="0"}]^M
(gdb) ^M
FAIL: gdb.mi/mi-var-block.exp: update all vars: cb foo changed (unexpected output)
...
The problem is that the test-case attempts to detect a change in the cb
variable caused by this initialization:
...
void
do_block_tests ()
{
int cb = 12;
...
but that only works if the stack location happens to be unequal to 12 before
the initialization.
Fix this by first initializing to 0, and then changing the value to 12:
...
- int cb = 12;
+ int cb = 0;
+ cb = 12;
...
and detecting that change.
Tested on x86_64-linux.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29195
Eli Zaretskii [Thu, 2 Jun 2022 16:34:15 +0000 (19:34 +0300)]
Rearrange and slightly reword the "Location Specification" section
This rearranges and changes the wording of the "Location
Specification" section of the GDB manual in minor ways.
Tom Tromey [Wed, 18 May 2022 16:13:32 +0000 (10:13 -0600)]
ODR warning for "main"
"main" is redeclared with a different type in maint.c. I think this
might have come from my first gdb patch, many many years ago. While I
wonder if this profiling code is actually useful at all any more, in
the meantime it's simple to fix the declaration.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Wed, 18 May 2022 16:12:41 +0000 (10:12 -0600)]
ODR warnings for "struct coff_symbol"
"struct coff_symbol" is defined in multiple .c files, causing ODR
warnings. This patch renames just the xcoffread.c type.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Wed, 18 May 2022 16:10:57 +0000 (10:10 -0600)]
ODR warnings for "struct insn_decode_record_t"
"struct insn_decode_record_t" is defined in multiple .c files, causing
ODR warnings. This patch renames the types, and removes the use of
"typedef" here -- this is a C-ism that's no longer needed.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Wed, 18 May 2022 16:08:43 +0000 (10:08 -0600)]
ODR warnings for "struct insn_info"
"struct insn_info" is defined in multiple .c files, causing ODR
warnings. This patch renames the type in z80-tdep.c, leaving the
other one alone.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Wed, 18 May 2022 16:06:17 +0000 (10:06 -0600)]
ODR warnings from overlay constants
Some overlay-related constants are duplicated in z80-tdep.c, causing
ODR warnings. This patch renames just the z80-specific ones.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Wed, 18 May 2022 15:55:00 +0000 (09:55 -0600)]
ODR warning for "enum string_repr_result"
"enum string_repr_result" is defined in multiple .c files, causing ODR
warnings. This patch renames the types.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Wed, 18 May 2022 15:51:10 +0000 (09:51 -0600)]
ODR warning for "struct find_targ_sec_arg"
"struct find_targ_sec_arg" is defined in multiple .c files, causing
ODR warnings. This patch renames the types.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Wed, 18 May 2022 15:49:35 +0000 (09:49 -0600)]
ODR warning for "struct stack_item"
"struct stack_item" is defined in multiple .c files, causing ODR
warnings. This patch renames these types.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Wed, 18 May 2022 15:45:33 +0000 (09:45 -0600)]
ODR warning for "struct instruction_type"
"struct instruction_type" is defined in multiple .c files, causing an
ODR warning. This patch renames the types.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Tue, 10 May 2022 15:23:27 +0000 (09:23 -0600)]
ODR warning for struct ext_link_map
This renames the solib-dsbt.c copy of "struct ext_link_map" to avoid
an ODR warning.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Tue, 10 May 2022 15:13:42 +0000 (09:13 -0600)]
ODR warning for struct field_info
This renames one of the instance of "struct field_info" to avoid an
ODR warning.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Tue, 10 May 2022 15:13:05 +0000 (09:13 -0600)]
ODR warnings for struct nextfield
"struct nextfield" is defined in multiple places in GDB. This patch
renames just the stabs one, leaving the DWARF one untouched.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Tue, 10 May 2022 14:56:26 +0000 (08:56 -0600)]
ODR warnings for struct symloc
"struct symloc" is defined in multiple spots in gdb, causing ODR
warnings. This patch renames these.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tom Tromey [Tue, 10 May 2022 14:47:34 +0000 (08:47 -0600)]
Fix ODR warning in observable.h
observable.h triggers an ODR warning because this line:
extern observable<struct target_ops */* target */> target_changed;
... may be the only declaration of "struct target_ops" in scope
(depending on the particular .c file) -- and this declares it in a
namespace, resulting in confusion.
This patch fixes the problem by adding a forward declaration.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=22395
Tiezhu Yang [Thu, 2 Jun 2022 06:51:17 +0000 (14:51 +0800)]
gdb: LoongArch: Implement the software_single_step gdbarch method
When execute the following command on LoongArch:
make check-gdb TESTS="gdb.base/branch-to-self.exp"
there exist the following failed testcases:
FAIL: gdb.base/branch-to-self.exp: single-step: si (timeout)
FAIL: gdb.base/branch-to-self.exp: break-cond: side=host: continue to breakpoint: continue to break (timeout)
FAIL: gdb.base/branch-to-self.exp: break-cond: side=host: p counter (timeout)
Implement the software_single_step gdbarch method to decode the current
branch instruction and determine the address of the next instruction on
LoongArch to fix the above failed testcases.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Ilya Leoshkevich [Wed, 1 Jun 2022 12:04:10 +0000 (14:04 +0200)]
gdb: Do not add empty sections to the section map
From: Ulrich Weigand <ulrich.weigand@de.ibm.com>
build_objfile_section_table () creates four synthetic sections per
objfile, which are collected by update_section_map () and passed to
std::sort (). When there are a lot of objfiles, for example, when
debugging JITs, the presence of these sections slows down the sorting
significantly.
The output of update_section_map () is used by find_pc_section (),
which can never return any of these sections: their size is 0, so they
cannot be accepted by bsearch_cmp ().
Filter them (and all the other empty sections) out in
insert_section_p (), which is used only by update_section_map ().
Jon Turney [Sat, 21 May 2022 10:18:55 +0000 (11:18 +0100)]
Fix a new warning on Cygwin
> ../../gdb/windows-nat.c: In function βwindows_solib* windows_make_so(const char*, LPVOID)β:
> ../../gdb/windows-nat.c:714:12: error: declaration of βchar name [512]β shadows a parameter [-Werror=shadow=compatible-local]
> 714 | char name[SO_NAME_MAX_PATH_SIZE];
> | ^~~~
> ../../gdb/windows-nat.c:655:30: note: shadowed declaration is here
> 655 | windows_make_so (const char *name, LPVOID load_addr)
> | ~~~~~~~~~~~~^~~~
Jon Turney [Sat, 21 May 2022 10:11:12 +0000 (11:11 +0100)]
Fix Cygwin build after
85b25bd9
Fix Cygwin build after
85b25bd9 ("Simplify windows-nat.c solib handling").
Jon Turney [Fri, 20 May 2022 13:45:53 +0000 (14:45 +0100)]
Fix Cygwin build after
0578e87f
Fix Cygwin build after
0578e87f ("Remove some globals from
nat/windows-nat.c"). Update code under ifdef __CYGWIN__ for globals
moved to members of struct windows_process_info.
Jon Turney [Fri, 20 May 2022 13:35:57 +0000 (14:35 +0100)]
Fix Cygwin build after
fcab5839
Fix Cygwin build after
fcab5839 ("Implement pid_to_exec_file for Windows
in gdbserver"). That change moves code from gdb/windows-nat.c to
gdb/nat/windows-nat.c, but doesn't add the required typedefs and
includes for parts of that code under ifdef __CYGWIN__.
Alan Modra [Thu, 2 Jun 2022 09:12:01 +0000 (18:42 +0930)]
Re: ubsan: signed integer overflow in atof_generic
Oops.
* atof-generic.c: Include limits.h.
Alan Modra [Thu, 2 Jun 2022 08:58:57 +0000 (18:28 +0930)]
ubsan: signed integer overflow in atof_generic
Fix the signed overflows by using unsigned variables and detect
overflow at BUG! comment.
* atof-generic.c (atof_generic): Avoid signed integer overflow.
Return ERROR_EXPONENT_OVERFLOW if exponent overflows a long.
Alan Modra [Thu, 2 Jun 2022 07:13:48 +0000 (16:43 +0930)]
asan: uninit write _bfd_ecoff_write_object_contents
* ecoff.c (_bfd_ecoff_write_object_contents): zalloc reloc_buff.
Alan Modra [Thu, 2 Jun 2022 07:01:42 +0000 (16:31 +0930)]
asan: null deref in coff_write_relocs
* coffcode.h (coff_write_relocs): Don't deref NULL howto.
Alan Modra [Thu, 2 Jun 2022 06:40:30 +0000 (16:10 +0930)]
ubsan: undefined shift in frag_align_code
* frags.c (MAX_MEM_FOR_RS_ALIGN_CODE): Avoid signed integer
overflow.
Alan Modra [Thu, 2 Jun 2022 02:44:16 +0000 (12:14 +0930)]
gas read_a_source_file #APP processing
This fixes some horrible code using do_scrub_chars. What we had ran
text through do_scrub_chars twice, directly in read_a_source_file and
again via the input_scrub_include_sb call. That's silly, and since
do_scrub_chars is a state machine, possibly wrong. More silliness is
evident in the temporary malloc'd buffer for do_scrub_chars output,
which should have been written directly to sbuf.
So, get rid of the do_scrub_chars call and support functions, leaving
scrubbing to input_scrub_include_sb. I did wonder about #NO_APP
overlapping input_scrub_next_buffer buffers, but that should only
happen if the string starts in one file and finishes in another.
* read.c (scrub_string, scrub_string_end): Delete.
(scrub_from_string): Delete.
(read_a_source_file): Rewrite #APP processing.
Alan Modra [Thu, 2 Jun 2022 01:59:34 +0000 (11:29 +0930)]
sb_scrub_and_add_sb not draining input string buffer
It is possible for sb_scrub_and_add_sb to not consume all of the input
string buffer. If this happens for reasons explained in the comment,
do_scrub_chars can leave pointers to the string buffer for the next
call. This patch fixes that by ensuring the input is drained. Note
that the behaviour for an empty string buffer is also changed,
avoiding another do_scrub_chars bug where empty input and single char
sized output buffers could result in a write past the end of the
output.
sb.c (sb_scrub_and_add_sb): Loop until all of input sb is
consumed.
Alan Modra [Wed, 1 Jun 2022 08:14:41 +0000 (17:44 +0930)]
asan: heap buffer overflow in dwarf2_directive_filename
Seen with .file
4294967289 "xxx.c"
* dwarf2dbg.c (assign_file_to_slot): Catch more cases of integer
overflow. Make param i an unsigned int.
Alan Modra [Wed, 1 Jun 2022 07:22:58 +0000 (16:52 +0930)]
asan: NULL deref in scan_unit_for_symbols
Since commit
b43771b045 it has been possible to look up addresses
that match a unit with errors, since ranges are added to a trie while
the unit is being parsed. On error, parse_comp_unit leaves
first_child_die_ptr NULL which results in a NULL info_ptr being passed
to scan_unit_for_symbols. Fix this by setting unit->error.
Also wrap some overlong lines, and fix some formatting errors.
* dwarf2.c: Formatting.
(parse_comp_unit): Set unit->error on err_exit path.
GDB Administrator [Thu, 2 Jun 2022 00:00:18 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Wed, 1 Jun 2022 17:29:40 +0000 (19:29 +0200)]
[gdb] Fix warning in foreach_arch selftests
When running the selftests, I run into:
...
$ gdb -q -batch -ex "maint selftest"
...
Running selftest execute_cfa_program::aarch64:ilp32.
warning: A handler for the OS ABI "GNU/Linux" is not built into this
configuration of GDB. Attempting to continue with the default aarch64:ilp32
settings.
...
and likewise for execute_cfa_program::i8086 and
execute_cfa_program::ia64-elf32.
The warning can easily be reproduced outside the selftests by doing:
...
$ gdb -q -batch -ex "set arch aarch64:ilp32"
...
and can be prevented by first doing "set osabi none".
Fix the warning by setting osabi to none while doing selftests that iterate
over all architectures.
Tested on x86_64-linux.
Tom Tromey [Tue, 24 May 2022 16:15:17 +0000 (10:15 -0600)]
Add gdb.current_language and gdb.Frame.language
This adds the gdb.current_language function, which can be used to find
the current language without (1) ever having the value "auto" or (2)
having to parse the output of "show language".
It also adds the gdb.Frame.language, which can be used to find the
language of a given frame. This is normally preferable if one has a
Frame object handy.
Yvan Roux [Wed, 1 Jun 2022 11:08:00 +0000 (11:08 +0000)]
[arm] Don't use special treatment for PC
In an exception frame the PC register is extracted from the stack
just like other base registers, so there is no need for a special
treatment.
Signed-off-by: TorbjΓΆrn SVENSSON <torbjorn.svensson@st.com>
Signed-off-by: Yvan Roux <yvan.roux@foss.st.com>
Yvan Roux [Wed, 1 Jun 2022 11:08:00 +0000 (11:08 +0000)]
[arm] Add support for FPU registers in prologue unwinder
The prologue unwinder had support for FPU registers, but only to
calculate the correct offset on the stack, the values were not saved.
Signed-off-by: TorbjΓΆrn SVENSSON <torbjorn.svensson@st.com>
Signed-off-by: Yvan Roux <yvan.roux@foss.st.com>
Yvan Roux [Wed, 1 Jun 2022 11:08:00 +0000 (11:08 +0000)]
[arm] d0..d15 are 64-bit each, not 32-bit
When unwinding the stack, the floating point registers d0 to d15
need to be handled as double words, not words.
Only the first 8 registers have been confirmed fixed with this patch
on a STM32F407-DISC0 board, but the upper 8 registers on Cortex-M33
should be handled in the same way.
The test consisted of running a program compiled with float-abi=hard.
In the main function, a function taking a double as an argument was
called. After the function call, a hardware timer was used to
trigger an interrupt.
In the debug session, a breakpoint was set in the function called
from main to verify the content of the registers using "info float"
and another breakpoint in the interrupt handler was used to check
the same registers using "info float" on frame 2 (the frame just
before the dummy frame created for the signal handler in gdb).
Signed-off-by: TorbjΓΆrn SVENSSON <torbjorn.svensson@st.com>
Signed-off-by: Yvan Roux <yvan.roux@foss.st.com>
Yvan Roux [Wed, 1 Jun 2022 11:08:00 +0000 (11:08 +0000)]
[arm] Cleanup: use hex for offsets
Changed offset from decimal to hex to match architecture reference
manual terminology and keep coherency with the rest of the code.
Signed-off-by: TorbjΓΆrn SVENSSON <torbjorn.svensson@st.com>
Signed-off-by: Yvan Roux <yvan.roux@foss.st.com>
Jiangshuai Li [Wed, 1 Jun 2022 06:46:01 +0000 (14:46 +0800)]
gdb:csky save fpu and vdsp info to struct csky_gdbarch_tdep
First, add three variables fpu_abi, fpu_hardfp and vdsp_version
to csky_gdbarch_tdep. They will be initialized from info.abfd in
cskg_gdbarch_init.
Now, they are just used to find a candidate among the list of pre-declared
architectures
Later, they will be used in gdbarch_return_value and gdbarch_push_dummy_call
for funtions described below:
fpu_abi: to check if the bfd is using VAL_CSKY_FPU_ABI_HARD or
VAL_CSKY_FPU_ABI_SOFT
fpu_hardfp: to check if the bfd is using VAL_CSKY_FPU_HARDFP_SINGLE
or VAL_CSKY_FPU_HARDFP_DOUBLE
vdsp_version: to check if a function is returned with CSKY_VRET_REGNUM
Alan Modra [Wed, 1 Jun 2022 01:14:01 +0000 (10:44 +0930)]
Re: use libiberty xmalloc in bfd/doc/chew.c
We can't use libiberty.a in chew. libiberty is a host library, chew
a build program. Partly revert commit
7273d78f3f7a, instead define
local versions of the libiberty functions. ansidecl.h also isn't
needed.
* doc/chew.c: Don't include libiberty.h or ansidecl.h.
(xmalloc, xrealloc, xstrdup): New functions.
* doc/local.mk (LIBIBERTY): Don't define or use.
* Makefile.in: Regenerate.
GDB Administrator [Wed, 1 Jun 2022 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
H.J. Lu [Tue, 31 May 2022 22:38:19 +0000 (15:38 -0700)]
x86: Properly handle IFUNC function pointer reference
Update
commit
68c4956b1401de70173848a6bdf620cb42fa9358
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Apr 26 09:08:54 2022 -0700
x86: Properly handle function pointer reference
to properly handle IFUNC function pointer reference. Since IFUNC symbol
value is only known at run-time, set pointer_equality_needed for IFUNC
function pointer reference in PDE so that it will be resolved to its PLT
entry directly.
bfd/
PR ld/29216
* elf32-i386.c (elf_i386_scan_relocs): Set pointer_equality_needed
for IFUNC function pointer reference in PDE.
* elf64-x86-64.c (elf_x86_64_scan_relocs): Likewise.
ld/
PR ld/29216
* testsuite/ld-ifunc/ifunc.exp: Run PR ld/29216 test.
* testsuite/ld-ifunc/pr29216.c: New file.
H.J. Lu [Tue, 31 May 2022 21:55:41 +0000 (14:55 -0700)]
i386: Ajdust more tests for opcodes/i386: remove trailing whitespace
This fixes:
FAIL: Build ifunc-1a with -z ibtplt
FAIL: Build ifunc-1a with PIE -z ibtplt
FAIL: Build libno-plt-1b.so
FAIL: No PLT (dynamic 1a)
FAIL: No PLT (dynamic 1b)
FAIL: No PLT (dynamic 1c)
FAIL: No PLT (static 1d)
FAIL: No PLT (PIE 1e)
FAIL: No PLT (PIE 1f)
FAIL: No PLT (PIE 1g)
FAIL: No PLT (dynamic 1h)
FAIL: No PLT (dynamic 1i)
FAIL: No PLT (static 1j)
* ld-i386/libno-plt-1b.dd: Remove trailing whitespaces.
* ld-i386/no-plt-1a.dd: Likewise.
* ld-i386/no-plt-1b.dd: Likewise.
* ld-i386/no-plt-1c.dd: Likewise.
* ld-i386/no-plt-1d.dd: Likewise.
* ld-i386/no-plt-1e.dd: Likewise.
* ld-i386/no-plt-1f.dd: Likewise.
* ld-i386/no-plt-1g.dd: Likewise.
* ld-i386/no-plt-1h.dd: Likewise.
* ld-i386/no-plt-1i.dd: Likewise.
* ld-i386/no-plt-1j.dd: Likewise.
* ld-i386/plt-main-ibt.dd: Likewise.
* ld-i386/plt-pie-ibt.dd: Likewise.
Tom Tromey [Sat, 21 May 2022 15:50:13 +0000 (09:50 -0600)]
Use unique_ptr for objfiles
A while back, I changed objfiles to be held via a shared_ptr. The
idea at the time was that this was a step toward writing to the index
cache in the background, and this would let gdb keep a reference alive
to do so. However, since then we've rewritten the DWARF reader, and
the new index can do this without requiring a shared pointer -- in
fact there are patches pending to implement this.
This patch switches objfile management to unique_ptr, which makes more
sense now.
Regression tested on x86-64 Fedora 34.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:45 +0000 (16:43 +0200)]
gdb/testsuite: fixup common-block.exp for intel compilers
The order in which the variables in info common and info locals are
displayed is compiler (and dwarf) dependent. While all symbols should
be displayed the order is not fixed.
I added a gdb_test_multiple that lets ifx and ifort pass in cases where
only the order differs.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:45 +0000 (16:43 +0200)]
gdb, testsuite, fortran: fixup mixed-lang-stack for Intel/LLVM compilers
When value-printing a pointer within GDB by default GDB will look for
defined symbols residing at the address of the pointer. For the given
test the Intel/LLVM compiler stacks both display a symbol associated
with a printed pointer while the gnu stack does not. This leads to
failures in the test when running the test with CC_FOR_TARGET='clang'
CXX_FOR_TARGET='clang' F90_FOR_TARGET='flang'"
(gdb) b 37
(gdb) r
(gdb) f 6
(gdb) info args
a = 1
b = 2
c = 3
d = 4 + 5i
f = 0x419ed0 "abcdef"
g = 0x4041a0 <.BSS4>
or CC_FOR_TARGET='icx' CXX_FOR_TARGET='icpx' F90_FOR_TARGET='ifx'"
(gdb) b 37
(gdb) r
(gdb) f 6
(gdb) info args
a = 1
b = 2
c = 3
d = 4 + 5i
f = 0x52eee0 "abcdef"
g = 0x4ca210 <mixed_func_1a_$OBJ>
For the compiled binary the Intel/LLVM compilers both decide to move the
local variable g into the .bss section of their executable. The gnu
stack will keep the variable locally on the stack and not define a
symbol for it.
Since the behavior for Intel/LLVM is actually expected I adapted the
testcase at this point to be a bit more allowing for other outputs.
I added the optional "<SYMBOLNAME>" to the regex testing for g.
The given changes reduce the test fails for Intel/LLVM stack by 4 each.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:45 +0000 (16:43 +0200)]
gdb, testsuite, fortran: fix double free in mixed-lang-stack.exp
While testing mixed-lang-stack I realized that valgrind actually
complained about a double free in the test.
All done
==
2503051==
==
2503051== HEAP SUMMARY:
==
2503051== in use at exit: 0 bytes in 0 blocks
==
2503051== total heap usage: 26 allocs, 27 frees, 87,343 bytes allocated
==
2503051==
==
2503051== All heap blocks were freed -- no leaks are possible
==
2503051==
==
2503051== For lists of detected and suppressed errors, rerun with: -s
==
2503051== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
Reason for this is that in mixed-lang-stack.cpp in mixed_func_1f an
object "derived_type obj" goes on the stack which is then passed-by-value
(so copied) to mixed_func_1g. The default copy-ctor will be called but,
since derived_type contains a heap allocated string and the copy
constructor is not implemented it will only be able to shallow copy the
object. Right after each of the functions the object gets freed - on the
other hand the d'tor of derived_type actually is implemented and calls
free on the heap allocated string which leads to a double free. Instead
of obeying the rule of 3/5 I just got rid of all that since it does not
serve the test. The string is now just a const char* = ".." object
member.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:45 +0000 (16:43 +0200)]
testsuite, fortran: allow additional completions in module.exp
For ifort, ifx, and flang the tests "complete modm" and "complete
modmany" fail. This is because all three emit additional completion
suggestions. These additional suggestions have their origin in symbols
emitted by the compilers which can also be completed from the respective
incomplete word (modm or modmany). For this specific example gfortran
does not emit any additional symbols.
For example, in this test the linkage name for var_a in ifx is
"modmany_mp_var_a_" while gfortran uses "__modmany_MOD_var_a" instead.
Since modmany_mp_var_a can be completed from modm and also modmany they
will get displayed, while gfortran's symbol starts with "__" and thus will
be ignored (it cannot be a completion of a word starting with "m").
Similar things happen in flang and ifort. Some example output is shown
below:
FLANG
(gdb) complete p modm
p modmany
p modmany::var_a
p modmany::var_b
p modmany::var_c
p modmany::var_i
p modmany_
IFX/IFORT
(gdb) complete p modm
p modmany
p modmany._
p modmany::var_a
p modmany::var_b
p modmany::var_c
p modmany::var_i
p modmany_mp_var_a_
p modmany_mp_var_b_
p modmany_mp_var_c_
p modmany_mp_var_i_
GFORTRAN
(gdb) complete p modm
p modmany
p modmany::var_a
p modmany::var_b
p modmany::var_c
p modmany::var_i
I want to emphasize: for Fortran (and also C/C++) the complete command
does not actually check whether its suggestions make sense - all it does
is look for any symbol (in the minimal symbols, partial symbols etc.)
that a given substring can be completed to (meaning that the given substring
is the beginning of the symbol). One can easily produce a similar
output for the gfortran compiled executable. For this look at the
slightly modified "complete p mod" in gfortran:
(gdb) complete p mod
p mod1
p mod1::var_const
...
p mod_1.c
p modcounter
p mode_t
p modf
...
p modify_ldt
p modmany
p modmany::var_a
p modmany::var_b
p modmany::var_c
p modmany::var_i
p module
p module.f90
p module_entry
p moduse
p moduse::var_x
p moduse::var_y
Many of the displayed symbols do not actually work with print:
(gdb) p mode_t
Attempt to use a type name as an expression
(gdb) p mod_1.c
No symbol "mod_1" in current context.
(gdb)
I think that in the given test the output for gfortran only looks nice
"by chance" rather than is actually expected. Expected is any output
that also contains the completions
p modmany
p modmany::var_a
p modmany::var_b
p modmany::var_c
p modmany::var_i
while anythings else can be displayed as well (depending on the
compiler and its emitted symbols).
This, I'd consider all three outputs as valid and expected - one is just
somewhat lucky that gfortran does not produce any additional symbols that
got matched.
The given patch improves test performance for all three compilers
by allowing additional suggested completions inbetween and after
the two given blocks in the test. I did not allow additional print
within the modmany_list block since the output is ordered alphabetically
and there should normally not appear any additional symbols there.
For flang/ifx/ifort I each see 2 failures less (which are exactly the two
complete tests).
As a side note and since I mentioned C++ in the beginning: I also tried
the gdb.cp/completion.exp. The output seems a bit more reasonable,
mainly since C++ actually has a demangler in place and linkage symbols
do not appear in the output of complete. Still, with a poor enough
to-be-completed string one can easily produce similar results:
(gdb) complete p t
...
p typeinfo name for void
p typeinfo name for void const*
p typeinfo name for void*
p typeinfo name for wchar_t
p typeinfo name for wchar_t const*
p typeinfo name for wchar_t*
p t *** List may be truncated, max-completions reached. ***
(gdb) p typeinfo name for void*
No symbol "typeinfo" in current context.
(gdb) complete p B
p BACK_SLASH
p BUF_FIRST
p BUF_LAST
...
p Base
p Base::Base()
p Base::get_foo()
p bad_key_err
p buf
p buffer
p buffer_size
p buflen
p bufsize
p build_charclass.isra
(gdb) p bad_key_err
No symbol "bad_key_err" in current context.
(compiled with gcc/g++ and breaking at main).
This patch is only about making the referenced test more 'fair' for the
other compilers. Generally, I find the behavior of complete a bit
confusing and maybe one wants to change this at some point but this
would be a bigger task.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:45 +0000 (16:43 +0200)]
testsuite, fortran: fix info-types for intel compilers
This info-types.exp test case had a few issues that this patch fixes.
First, the emitted symbol character(kind=1)/character*1 (different
compilers use different naming converntions here) which is checkedin the
test is not actually expected given the test program. There is no
variable of that type in the test. Still, gfortran emits it for every
Fortran program there is. The reason is the way gfortran handles Fortran's
named main program. It generates a wrapper around the Fortran program
that is quite similar to a C main function. This C-like wrapper has
argc and argv arguments for command line argument passing and the argv
pointer type has a base type character(kind=1) DIE emitted at CU scope.
Given the program
program prog
end program prog
the degbug info gfortran emits looks somewhat like
<0><c>: Abbrev Number: 3 (DW_TAG_compile_unit)
...
<1><2f>: Abbrev Number: 4 (DW_TAG_subprogram)
<30> DW_AT_external : 1
<30> DW_AT_name : (indirect string, ...): main
...
<2><51>: Abbrev Number: 1 (DW_TAG_formal_parameter)
<52> DW_AT_name : (indirect string, ...): argc
...
<2><5d>: Abbrev Number: 1 (DW_TAG_formal_parameter)
<5e> DW_AT_name : (indirect string, ...): argv
...
<62> DW_AT_type : <0x77>
...
<2><6a>: Abbrev Number: 0
...
<1><77>: Abbrev Number: 6 (DW_TAG_pointer_type)
<78> DW_AT_byte_size : 8
<79> DW_AT_type : <0x7d>
<1><7d>: Abbrev Number: 2 (DW_TAG_base_type)
<7e> DW_AT_byte_size : 1
<7f> DW_AT_encoding : 8 (unsigned char)
<80> DW_AT_name : (indirect string, ...): character(kind=1)
<1><84>: Abbrev Number: 7 (DW_TAG_subprogram)
<85> DW_AT_name : (indirect string, ...): prog
...
Ifx and flang do not emit any debug info for a wrapper main method so
the type is missing here. There was the possibility of actually adding
a character*1 type variable to the Fortran executable, but both, ifx and
gfortran chose to emit this variable's type as a DW_TAG_string_type of
length one (instead of a character(kind=1), or whatever the respective
compiler naming convention is). While string types are printed as
character*LENGHT in the fortran language part (e.g. when issuing a
'ptype') they do not generate any symbols inside GDB. In read.c it says
/* These dies have a type, but processing them does not create
a symbol or recurse to process the children. Therefore we can
read them on-demand through read_type_die. */
So they did not add any output to 'info types'. Only flang did emit a
character type here.
As adding a type would have a) not solved the problem for ifx and would
have b) somehow hidden the curious behavior of gfortran, instead, the
check for this character type was chagened to optional with the
check_optional_entry to allow for the symbols's absence and to allow
flang and ifx to pass this test as well.
Second, the line checked for s1 was hardcoded as 37 in the test. Given
that the type is actually defined on line 41 (which is what is emitted by
ifx) it even seems wrong. The line check for s1 was changed to actually
check for 41 and a gfortran bug has been filed here
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105454
The test is now marked as xfail for gfortran.
Third, the whole test of checking for the 'Type s1' in info types seemed
questionable. The type s1 is declared iside the scope of the Fortran
program info_types_test. Its DIE however is emitted as a child of the
whole compilation unit making it visible outside of the program's scope.
The 'info types' command checks for types stored in the GLOBAL_BLOCK,
or STATIC_BLOCKm wgucm according to block.h
The GLOBAL_BLOCK contains all the symbols defined in this compilation
whose scope is the entire program linked together.
The STATIC_BLOCK contains all the symbols whose scope is the
entire compilation excluding other separate compilations.
so for gfortran, the type shows up in the output of 'info types'. For
flang and ifx on the other hand this is not the case. The two compilers
emit the type (correctly) as a child of the Fortran program, thus not
adding it to either, the GLOBAL_BLOCK nor the LOCAL_BLOCK. A bug has
been opened for the gfortran scoping issue:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105454
While the most correct change might have been removing the check for s1,
the change made here was to only check for this type in case of gfortran
being used as the compiler, as this check also covers the declaration
line issue mentioned above. A comment was added to maybe remove this
check once the scoping issue is resolved (and it starts to fail with
newer gfortran versions). The one used to test these changes was 13.0.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:44 +0000 (16:43 +0200)]
testsuite/lib: add check_optional_entry for GDBInfoSymbols
There was already a similar functionality for the GDBInfoModuleSymbols.
This just extends the GDBInfoSymbols. We will use this feature in a
later commit to make a testcase less GNU specific and more flexible for
other compilers.
Namely, in gdb.fortran/info-types.exp currenlty
GDBInfoSymbols::check_entry is used to verify and test the output of the
info symbols command. The test, however was written with gfortran as a
basis and some of the tests are not fair with e.g. ifx and ifort as
they test for symbols that are not actually required to be emitted. The
lines
GDBInfoSymbols::check_entry "${srcfile}" "" "${character1}"
and
GDBInfoSymbols::check_entry "${srcfile}" "37" "Type s1;"
check for types that are either not used in the source file (character1)
or should not be emitted by the compiler at global scope (s1) thus no
appearing in the info symbols command. In order to fix this we will
later use the newly introduced check_optional_entry over check_entry.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:44 +0000 (16:43 +0200)]
testsuite, fortran: Add '-debug-parameters all' when using ifx/ifort
In order for ifx and ifort to emit all debug entries, even for unused
parameters in modules we have to define the '-debug-parameters all' flag.
This commit adds it to the ifx-*/ifort-* specific flags in gdb.exp.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:44 +0000 (16:43 +0200)]
testsuite, fortran: add compiler dependent types to dynamic-ptype-whatis
The test was earlier not using the compiler dependent type print system
in fortran.exp. I changed this. It should generally improve the test
performance for different compilers. For ifx and gfortran I do not see
any failures.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:44 +0000 (16:43 +0200)]
testsuite, fortran: add required external keyword
Currenlty, ifx/ifort cannot compile the given executable as it is not
valid Fortran. It is missing the external keyword on the
no_arg_subroutine. Gfortran compiles the example but this is actually
a bug and there is an open gcc ticket for this here:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50377
Adding the keyword does not change the gfortran compiling of the example.
It will, however, prevent a future fail once 50377 has been addressed.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:44 +0000 (16:43 +0200)]
gdb/testsuite: disable charset.exp for intel compilers
The test specifically tests for the Fortran CHARACTER(KIND=4) which is
not available in ifx/ifort.
Since the other characters are also printed elsewhere, we disable this
test for the unsupported compilers.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:44 +0000 (16:43 +0200)]
gdb/testsuite: rename intel next gen c/cpp compilers
The name for icx and icpx in the testsuite was earlier set to 'intel-*'
by the compiler identification. This commit changes this to 'icx-*'.
Note, that currently these names are not used within the testsuite so no
tests have to be adapted here.
Cristian Sandu [Tue, 31 May 2022 14:43:44 +0000 (16:43 +0200)]
gdb/testsuite: add Fortran compiler identification to GDB
This commit adds a separate Fortran compiler identification mechanism to
the testsuite, similar to the existing one for C/C++. Before this
change, the options and version for the Fortran compiler specified when
running the testsuite with F90_FOR_TARGET set, was detected via its
respective C compiler. So running the testsuite as
make check TEST=gdb.fortran/*.exp CC_FOR_TARGET=gcc F90_FOR_TARGET=ifx
or even
make check TEST=gdb.fortran/*.exp F90_FOR_TARGET=ifx
would use the gcc compiler inside the procedures get_compiler_info and
test_compiler_info to identify compiler flags and the compiler version.
This could sometimes lead to unpredictable outputs. It also limited
testsuite execution to combinations where C and Fortran compiler would
come from the same family of compiers (gcc/gfortran, icc/ifort, icx/ifx,
clang/flang ..). This commit enables GDB to detect C and Fortran
compilers independently of each other.
As most/nearly all Fortran compilers have a mechanism for preprocessing
files in a C like fashion we added the exact same meachnism that already
existed for C/CXX. We let GDB preprocess a file with the compilers
Fortran preprocessor and evaluate the preprocessor defined macros in that
file.
This enables GDB to properly run heterogeneous combinations of C and
Fortran compilers such as
CC_FOR_TARGET='gcc' and F90_FOR_TARGET='ifort'
or enables one to run the testsuite without specifying a C compiler as in
make check TESTS=gdb.fortran/*.exp F90_FOR_TARGET='ifx'
make check TESTS=gdb.fortran/*.exp F90_FOR_TARGET='flang'
On the other hand this also requires one to always specify a
identification mechanism for Fortran compilers in the compiler.F90 file.
We added identification for GFORTRAN, FLANG (CLASSIC and LLVM) IFX,
IFORT, and ARMFLANG for now.
Classic and LLVM flang were each tested with their latest releases on
their respective release pages. Both get recognized by the new compiler
identification and we introduced the two names flang-classic and
flang-llvm to distinguish the two. While LLVM flang is not quite mature
enough yet for running the testsuite we still thought it would be a good
idea to include it already. For this we added a case for the fortran_main
procedure. LLVM flang uses 'MAIN__' as opposed to classic flang which
uses 'MAIN_' here.
We did not have the possibility to test ARMFLANG - the versioning scheme
here was extracted from its latest online documentation.
We changed the test_compiler_info procedure to take another optional
argument, the language string, which will be passed though to the
get_compiler_info procedure. Passing 'f90' or 'c++' here will then
trigger the C++/Fortran compiler identification within
get_compiler_info. The latter procedure was extended to also handle
the 'f90' argument (similarly to the already existing 'c++' one).
Co-authored-by: Nils-Christian Kempke <nils-christian.kempke@intel.com>
Nils-Christian Kempke [Tue, 31 May 2022 14:43:43 +0000 (16:43 +0200)]
gdb/testsuite: move getting_compiler_info to front of gdb_compile
The procedure gdb_compile queries its options via
[lsearch -exact $options getting_compiler_info]
to check whether or not it was called in with the option
getting_compiler_info. If it was called with this option it would
preprocess some test input to try and figure out the actual compiler
version of the compiler used. While doing this we cannot again try to
figure out the current compiler version via the 'getting_compiler_info'
option as this would cause infinite recursion. As some parts of the
procedure do recursively test for the compiler version to e.g. set
certain flags, at several places gdb_compile there are checks for the
getting_compiler_info option needed.
In the procedure, there was already a variable 'getting_compiler_info'
which was set to the result of the 'lsearch' query and used instead of
again and again looking for getting_compiler_info in the procedure
options. But, this variable was actually set too late within the code.
This lead to a mixture of querying 'getting_compiler_info' or
doing an lserach on the options passed to the procedure.
I found this inconsistent and instead moved the variable
getting_compiler_info to the front of the procedure. It is set to true
or false depending on whether or not the argument is found in the
procedure's options (just as before) and queried instead of doing an
lsearch on the procedure options in the rest of the procedure.
Felix Willgerodt [Tue, 31 May 2022 14:43:43 +0000 (16:43 +0200)]
gdb/testsuite: Fix fortran types for Intel compilers.
Newer Intel compilers emit their dwarf type name in a slightly different
format. Therefore, this needs adjustment to make more tests pass in the
Fortran testsuite.
Co-authored-by: Abdul Basit Ijaz <abdul.b.ijaz@intel.com>
Co-authored-by: Nils-Christian Kempke <nils-christian.kempke@intel.com>
Abdul Basit Ijaz [Tue, 31 May 2022 14:43:43 +0000 (16:43 +0200)]
gdb/testsuite: Use -module option for Intel Fortran compilers
The '-J' option is not supported in Intel compilers (ifx and ifort).
The Intel version of the flag is '-module' which serves the same purpose.
Nils-Christian Kempke [Tue, 31 May 2022 14:43:43 +0000 (16:43 +0200)]
gdb/testsuite: remove F77_FOR_TARGET support
The last uses of the F77_FOR_TARGET via passing f77 to GDB's compile
procedure were removed in this commit
commit
0ecee54cfd04a60e7ca61ae07c72b20e21390257
Author: Tom Tromey <tromey@redhat.com>
Date: Wed Jun 29 17:50:47 2011 +0000
over 10 years ago. The last .f files in the testsuite by now are all
being compiled by passing 'f90' to the GDB compile, thus only actually
using F90_FOR_TARGET (array-element.f, block-data.f, subarray.f).
Gfortran in this case is backwards compatible with most f77 code as
claimed on gcc.gnu.org/fortran.
The reason we'd like to get rid of this now is, that we'll be
implementing a Fortran compiler identification mechanism, similar to the
C/Cpp existing ones. It would be using the Fortran preprocessor macro
defines to identify the Fortran compiler version at hand. We found it
inconsequent to only implement this for f90 but, on the other hand, f77
seems deprecated. So, with this commit we remove the remaining lines for
its support.
Pedro Alves [Tue, 31 May 2022 09:54:17 +0000 (10:54 +0100)]
Improve clear command's documentation
Co-Authored-By: Eli Zaretskii <eliz@gnu.org>
Change-Id: I9440052fd28f795d6f7c93a4576beadd21f28885
Pedro Alves [Tue, 31 May 2022 12:36:32 +0000 (13:36 +0100)]
Clarify why we unit test matching symbol names with 0xff characters
In the name matching unit tests in gdb/dwarf2/read.c, explain better
why we test symbols with \377 / 0xff characters (Latin1 'ΓΏ').
Change-Id: I517f13adfff2e4d3cd783fec1d744e2b26e18b8e
Pedro Alves [Tue, 31 May 2022 11:18:49 +0000 (12:18 +0100)]
Improve break-range's documentation
Change-Id: Iac26e1d2e7d8dc8a7d9516e6bdcc5c3fc4af45c8
Pedro Alves [Tue, 31 May 2022 11:06:50 +0000 (12:06 +0100)]
Explicitly mention yet-unloaded shared libraries in location spec examples
Change-Id: I05639ddb3bf620c7297b57ed286adc3aa926b7b6
Alan Modra [Tue, 31 May 2022 11:29:04 +0000 (20:59 +0930)]
sparc64 segfault in finish_dynamic_symbol
SYMBOL_REFERENCES_LOCAL can return true for undefined symbols. This
can result in a segfault when running sparc64 ld/testsuite/ld-vsb
tests that expect a failure.
* elfxx-sparc.c (_bfd_sparc_elf_finish_dynamic_symbol): Don't
access u.def.section on non-default visibility undefined symbol.
Alan Modra [Tue, 31 May 2022 11:26:39 +0000 (20:56 +0930)]
ia64 gas: Remove unnecessary init
The whole struct is cleared by alloc_record.
* config/tc-ia64.c (output_prologue, output_prologue_gr): Don't
zero r.record.r.mask.
Alan Modra [Tue, 31 May 2022 11:22:42 +0000 (20:52 +0930)]
v850_elf_set_note prototype
v850_elf_set_note is declared using an unsigned int note param in
elf32-v850.h but defined with enum c850_notes note in elf32-v850.c.
Current mainline gcc is warning about this. Huh.
* elf32-v850.c (v850_elf_set_note): Make "note" param an
unsigned int.
Alan Modra [Tue, 31 May 2022 07:29:12 +0000 (16:59 +0930)]
Import libiberty from gcc
PR 29200
include/
* ansidecl.h,
* demangle.h: Import from gcc.
libiberty/
* cp-demangle.c,
* testsuite/demangle-expected: Import from gcc.