From fd8205284be4f6b36dd6f9bb897ead99bf87fe73 Mon Sep 17 00:00:00 2001 From: Doug Evans Date: Tue, 1 May 2012 03:00:36 +0000 Subject: [PATCH] * dwarf2read.c (init_cutu_and_read_dies): Renamed from init_and_read_dies_worker. All callers updated. (init_cu_and_read_dies, init_tu_and_read_dies): Delete. All calls replaced with init_cutu_and_read_dies. (load_partial_comp_unit): Pass 1 for use_existing_cu. (find_partial_die): Remove FIXME. Don't free current CU. testsuite/ * gdb.dwarf2/pr13961.S: New file. * gdb.dwarf2/pr13961.exp: New file. --- gdb/ChangeLog | 9 + gdb/dwarf2read.c | 94 ++----- gdb/testsuite/ChangeLog | 6 + gdb/testsuite/gdb.dwarf2/pr13961.S | 355 +++++++++++++++++++++++++++ gdb/testsuite/gdb.dwarf2/pr13961.exp | 36 +++ 5 files changed, 431 insertions(+), 69 deletions(-) create mode 100644 gdb/testsuite/gdb.dwarf2/pr13961.S create mode 100644 gdb/testsuite/gdb.dwarf2/pr13961.exp diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 23e6e303fbb..8c57df6fb07 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,12 @@ +2012-04-30 Doug Evans + + * dwarf2read.c (init_cutu_and_read_dies): Renamed from + init_and_read_dies_worker. All callers updated. + (init_cu_and_read_dies, init_tu_and_read_dies): Delete. All calls + replaced with init_cutu_and_read_dies. + (load_partial_comp_unit): Pass 1 for use_existing_cu. + (find_partial_die): Remove FIXME. Don't free current CU. + 2012-04-30 Sterling Augustine * contrib: New directory. diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c index e002c227de9..0caa5f99bdb 100644 --- a/gdb/dwarf2read.c +++ b/gdb/dwarf2read.c @@ -597,7 +597,7 @@ struct die_reader_specs gdb_byte *buffer; }; -/* Type of function passed to init_cu_and_read_dies, et.al. */ +/* Type of function passed to init_cutu_and_read_dies, et.al. */ typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, gdb_byte *info_ptr, struct die_info *comp_unit_die, @@ -1401,8 +1401,8 @@ static gdb_byte *read_and_check_comp_unit_head struct dwarf2_section_info *section, gdb_byte *info_ptr, int is_debug_types_section); -static void init_tu_and_read_dies - (struct dwarf2_per_cu_data *this_cu, int keep, +static void init_cutu_and_read_dies + (struct dwarf2_per_cu_data *this_cu, int use_existing_cu, int keep, die_reader_func_ftype *die_reader_func, void *data); static void init_cutu_and_read_dies_simple @@ -2474,7 +2474,7 @@ dw2_get_file_names (struct objfile *objfile, However, that's not the case for TUs where DW_AT_stmt_list lives in the DWO file. */ if (this_cu->is_debug_types) - init_tu_and_read_dies (this_cu, 0, dw2_get_file_names_reader, NULL); + init_cutu_and_read_dies (this_cu, 0, 0, dw2_get_file_names_reader, NULL); else init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); @@ -3628,8 +3628,7 @@ dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) } } -/* Subroutine of init_{cu,tu}_and_read_dies. - Do all the work necessary to initialize THIS_CU->cu and read in its DIE(s). +/* Initialize a CU (or TU) and read its DIEs. If the CU defers to a DWO file, read the DWO file as well. If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. @@ -3639,18 +3638,13 @@ dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) read_in_chain. Otherwise the dwarf2_cu data is freed at the end. WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental - linker) then DIE_READER_FUNC will not get called. - - FIXME: As an implementation detail between our callers and us, - USE_EXISTING_CU and KEEP are OK. But bubbling them up into their callers - isn't as clean as I'd like. Having more callers with good names - may be the way to go. */ + linker) then DIE_READER_FUNC will not get called. */ static void -init_and_read_dies_worker (struct dwarf2_per_cu_data *this_cu, - int use_existing_cu, int keep, - die_reader_func_ftype *die_reader_func, - void *data) +init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, + int use_existing_cu, int keep, + die_reader_func_ftype *die_reader_func, + void *data) { struct objfile *objfile = dwarf2_per_objfile->objfile; struct dwarf2_section_info *section = this_cu->info_or_types_section; @@ -3666,8 +3660,6 @@ init_and_read_dies_worker (struct dwarf2_per_cu_data *this_cu, if (use_existing_cu) gdb_assert (keep); - if (this_cu->is_debug_types) - gdb_assert (! use_existing_cu); cleanups = make_cleanup (null_cleanup, NULL); @@ -3918,43 +3910,6 @@ init_and_read_dies_worker (struct dwarf2_per_cu_data *this_cu, do_cleanups (cleanups); } -/* Main entry point for reading a CU. - Do all the work necessary to initialize THIS_CU->cu and read in its DIE(s). - If the CU defers to a DWO file, read the DWO file as well. - - If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. - Otherwise, a new CU is allocated with xmalloc. - - If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to - read_in_chain. Otherwise the dwarf2_cu data is freed at the end. */ - -static void -init_cu_and_read_dies (struct dwarf2_per_cu_data *this_cu, - int use_existing_cu, int keep, - die_reader_func_ftype *die_reader_func, - void *data) -{ - init_and_read_dies_worker (this_cu, use_existing_cu, keep, - die_reader_func, data); -} - -/* Main entry point for reading a TU. - Do all the work necessary to initialize THIS_CU->cu and read in its DIE(s). - If the TU defers to a DWO file, read the DWO file as well. - - If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to - read_in_chain. Otherwise the dwarf2_cu data is freed at the end. */ - -static void -init_tu_and_read_dies (struct dwarf2_per_cu_data *this_cu, - int keep, - die_reader_func_ftype *die_reader_func, - void *data) -{ - gdb_assert (this_cu->is_debug_types); - init_and_read_dies_worker (this_cu, 0, keep, die_reader_func, data); -} - /* Read CU/TU THIS_CU in section SECTION, but do not follow DW_AT_GNU_dwo_name if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed to @@ -4176,8 +4131,8 @@ process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu) free_one_cached_comp_unit (this_cu); gdb_assert (! this_cu->is_debug_types); - init_cu_and_read_dies (this_cu, 0, 0, process_psymtab_comp_unit_reader, - NULL); + init_cutu_and_read_dies (this_cu, 0, 0, process_psymtab_comp_unit_reader, + NULL); /* Age out any secondary CUs. */ age_cached_comp_units (); @@ -4192,6 +4147,7 @@ process_psymtab_type_unit (void **slot, void *info) struct signatured_type *sig_type = (struct signatured_type *) *slot; struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; + gdb_assert (per_cu->is_debug_types); gdb_assert (info == NULL); /* If this compilation unit was already read in, free the @@ -4202,8 +4158,8 @@ process_psymtab_type_unit (void **slot, void *info) if (per_cu->cu != NULL) free_one_cached_comp_unit (per_cu); - gdb_assert (per_cu->is_debug_types); - init_tu_and_read_dies (per_cu, 0, process_psymtab_comp_unit_reader, NULL); + init_cutu_and_read_dies (per_cu, 0, 0, process_psymtab_comp_unit_reader, + NULL); /* Age out any secondary CUs. */ age_cached_comp_units (); @@ -4303,10 +4259,7 @@ load_partial_comp_unit_reader (const struct die_reader_specs *reader, static void load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) { - if (this_cu->is_debug_types) - init_tu_and_read_dies (this_cu, 1, load_partial_comp_unit_reader, NULL); - else - init_cu_and_read_dies (this_cu, 0, 1, load_partial_comp_unit_reader, NULL); + init_cutu_and_read_dies (this_cu, 1, 1, load_partial_comp_unit_reader, NULL); } /* Create a list of all compilation units in OBJFILE. @@ -5315,7 +5268,7 @@ load_full_comp_unit (struct dwarf2_per_cu_data *this_cu) { gdb_assert (! this_cu->is_debug_types); - init_cu_and_read_dies (this_cu, 1, 1, load_full_comp_unit_reader, NULL); + init_cutu_and_read_dies (this_cu, 1, 1, load_full_comp_unit_reader, NULL); } /* Add a DIE to the delayed physname list. */ @@ -11176,11 +11129,14 @@ find_partial_die (sect_offset offset, struct dwarf2_cu *cu) if (pd == NULL && per_cu->load_all_dies == 0) { - /* FIXME: The testsuite doesn't trigger this code path. - http://sourceware.org/bugzilla/show_bug.cgi?id=13961 */ - - free_one_cached_comp_unit (per_cu); per_cu->load_all_dies = 1; + + /* This is nasty. When we reread the DIEs, somewhere up the call chain + THIS_CU->cu may already be in use. So we can't just free it and + replace its DIEs with the ones we read in. Instead, we leave those + DIEs alone (which can still be in use, e.g. in scan_partial_symbols), + and clobber THIS_CU->cu->partial_dies with the hash table for the new + set. */ load_partial_comp_unit (per_cu); pd = find_partial_die_in_comp_unit (offset, per_cu->cu); @@ -15913,7 +15869,7 @@ read_signatured_type (struct signatured_type *sig_type) gdb_assert (per_cu->is_debug_types); gdb_assert (per_cu->cu == NULL); - init_tu_and_read_dies (per_cu, 1, read_signatured_type_reader, NULL); + init_cutu_and_read_dies (per_cu, 0, 1, read_signatured_type_reader, NULL); } /* Decode simple location descriptions. diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index ce820bcbb60..074beff05f9 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2012-04-30 Doug Evans + + PR testsuite/13961 + * gdb.dwarf2/pr13961.S: New file. + * gdb.dwarf2/pr13961.exp: New file. + 2012-04-29 Yao Qi * gdb.dwarf2/dw2-ifort-parameter.exp: Use proc `dwarf2_support'. diff --git a/gdb/testsuite/gdb.dwarf2/pr13961.S b/gdb/testsuite/gdb.dwarf2/pr13961.S new file mode 100644 index 00000000000..8d333e75748 --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/pr13961.S @@ -0,0 +1,355 @@ +/* Copyright 2012 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +/* Testcase to exercise the code path in bug 13961. + + Compiled from: + + class foo + { + public: + int bar; + }; + + foo baz; + + int + main () + { + return 0; + } + + And then manually edited to insert the necessary DW_AT_specification + entries to trigger the desired code path. + There's no real need to make this architecture-specific, so it has been + further hand-edited to support that. +*/ + + .file "pr13961.cc" + + .globl baz + .bss + .align 4 + .type baz, @object + .size baz, 4 +baz: + .zero 4 + + .text +.Ltext0: + .globl main + .type main, @function +main: +.LFB0: + .4byte 0 +.LFE0: + .size main, .-main +.Letext0: + + .section .debug_types,"",@progbits +.Ldebug_types0: + .4byte .Ltu_end - .Ltu_start /* Length of Compilation Unit Info */ +.Ltu_start: + .2byte 0x4 /* DWARF version number */ + .4byte .Ldebug_abbrev0 /* Offset Into Abbrev. Section */ + .byte 0x4 /* Pointer Size (in bytes) */ + .byte 0x19 /* Type Signature */ + .byte 0x8b + .byte 0x7e + .byte 0xac + .byte 0xce + .byte 0xf1 + .byte 0x22 + .byte 0x90 + .4byte .Ltu_class_type - .Ldebug_types0 /* Offset to Type DIE */ + .uleb128 0x1 /* (DIE (0x17) DW_TAG_type_unit) */ + .byte 0x4 /* DW_AT_language */ + .byte 0x73 /* DW_AT_GNU_odr_signature */ + .byte 0xea + .byte 0x85 + .byte 0x23 + .byte 0x75 + .byte 0x8a + .byte 0x7e + .byte 0x87 + .4byte .Ldebug_line0 /* DW_AT_stmt_list */ + + /* Manually inserted to have a DW_AT_specification refering to + something and appearing ahead of it. */ + .uleb128 0x8 /* DW_TAG_class_type */ + .4byte .Ltu_class_type - .Ldebug_types0 + /* End of manual insertion */ + +.Ltu_class_type: + .uleb128 0x2 /* (DIE (0x25) DW_TAG_class_type) */ + .ascii "foo\0" /* DW_AT_name */ + .byte 0x4 /* DW_AT_byte_size */ + .byte 0x1 /* DW_AT_decl_file (pr13961.cc) */ + .byte 0x1 /* DW_AT_decl_line */ + .4byte 0x3f /* DW_AT_sibling */ + .uleb128 0x3 /* (DIE (0x31) DW_TAG_member) */ + .ascii "bar\0" /* DW_AT_name */ + .byte 0x1 /* DW_AT_decl_file (pr13961.cc) */ + .byte 0x4 /* DW_AT_decl_line */ + .4byte 0x3f /* DW_AT_type */ + .byte 0 /* DW_AT_data_member_location */ + .byte 0x1 /* DW_AT_accessibility */ + .byte 0 /* end of children of DIE 0x25 */ + .uleb128 0x4 /* (DIE (0x3f) DW_TAG_base_type) */ + .byte 0x4 /* DW_AT_byte_size */ + .byte 0x5 /* DW_AT_encoding */ + .ascii "int\0" /* DW_AT_name */ + .byte 0 /* end of children of DIE 0x17 */ + +.Ltu_end: + + .section .debug_info,"",@progbits +.Ldebug_info0: + .4byte .Lcu_end - .Lcu_start /* Length of Compilation Unit Info */ +.Lcu_start: + .2byte 0x4 /* DWARF version number */ + .4byte .Ldebug_abbrev0 /* Offset Into Abbrev. Section */ + .byte 0x4 /* Pointer Size (in bytes) */ + .uleb128 0x5 /* (DIE (0xb) DW_TAG_compile_unit) */ + .4byte .LASF0 /* DW_AT_producer: "GNU C++ 4.6.3 20120306" */ + .byte 0x4 /* DW_AT_language */ + .4byte .LASF1 /* DW_AT_name: "pr13961.cc" */ + .4byte .LASF2 /* DW_AT_comp_dir: "." */ + .4byte .Ltext0 /* DW_AT_low_pc */ + .4byte .Letext0 /* DW_AT_high_pc */ + .4byte .Ldebug_line0 /* DW_AT_stmt_list */ +.Lint_base_type: + .uleb128 0x4 /* (DIE (0x25) DW_TAG_base_type) */ + .byte 0x4 /* DW_AT_byte_size */ + .byte 0x5 /* DW_AT_encoding */ + .ascii "int\0" /* DW_AT_name */ + .uleb128 0x6 /* (DIE (0x2c) DW_TAG_subprogram) */ + /* DW_AT_external */ + .4byte .LASF3 /* DW_AT_name: "main" */ + .byte 0x1 /* DW_AT_decl_file (pr13961.cc) */ + .byte 0xa /* DW_AT_decl_line */ + .4byte 0x25 /* DW_AT_type */ + .4byte .LFB0 /* DW_AT_low_pc */ + .4byte .LFE0 /* DW_AT_high_pc */ + .uleb128 0x1 /* DW_AT_frame_base */ + .byte 0x9c /* DW_OP_call_frame_cfa */ + /* DW_AT_GNU_all_call_sites */ + .uleb128 0x7 /* (DIE (0x41) DW_TAG_variable) */ + .ascii "baz\0" /* DW_AT_name */ + .byte 0x1 /* DW_AT_decl_file (pr13961.cc) */ + .byte 0x7 /* DW_AT_decl_line */ + .byte 0x19 /* DW_AT_type */ + .byte 0x8b + .byte 0x7e + .byte 0xac + .byte 0xce + .byte 0xf1 + .byte 0x22 + .byte 0x90 + /* DW_AT_external */ + .uleb128 0x5 /* DW_AT_location */ + .byte 0x3 /* DW_OP_addr */ + .4byte baz + + /* Manually inserted to have a DW_AT_specification refering to + something and appearing ahead of it. */ + .uleb128 0x8 /* DW_TAG_class_type */ + .4byte .Lcu_class_type - .Ldebug_info0 /* DW_AT_specification */ + +.Lcu_int_type: + .uleb128 0x4 /* (DIE (0x3f) DW_TAG_base_type) */ + .byte 0x4 /* DW_AT_byte_size */ + .byte 0x5 /* DW_AT_encoding */ + .ascii "int\0" /* DW_AT_name */ +.Lcu_class_type: + .uleb128 0x2 /* (DIE (0x25) DW_TAG_class_type) */ + .ascii "foo2\0" /* DW_AT_name */ + .byte 0x4 /* DW_AT_byte_size */ + .byte 0x1 /* DW_AT_decl_file (pr13961.cc) */ + .byte 0x1 /* DW_AT_decl_line */ + .4byte 0x3f /* DW_AT_sibling */ + .uleb128 0x3 /* (DIE (0x31) DW_TAG_member) */ + .ascii "bar\0" /* DW_AT_name */ + .byte 0x1 /* DW_AT_decl_file (pr13961.cc) */ + .byte 0x4 /* DW_AT_decl_line */ + .4byte .Lcu_int_type - .Ldebug_info0 /* DW_AT_type */ + .byte 0 /* DW_AT_data_member_location */ + .byte 0x1 /* DW_AT_accessibility */ + .byte 0 /* end of children of DIE 0x25 */ + .uleb128 0x4 /* (DIE (0x3f) DW_TAG_base_type) */ + .byte 0x4 /* DW_AT_byte_size */ + .byte 0x5 /* DW_AT_encoding */ + .ascii "int\0" /* DW_AT_name */ + .byte 0 /* end of children of DIE 0x17 */ + /* End of manual insertion */ + + .byte 0 /* end of children of DIE 0xb */ + +.Lcu_end: + + .section .debug_abbrev,"",@progbits +.Ldebug_abbrev0: + .uleb128 0x1 /* (abbrev code) */ + .uleb128 0x41 /* (TAG: DW_TAG_type_unit) */ + .byte 0x1 /* DW_children_yes */ + .uleb128 0x13 /* (DW_AT_language) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x210f /* (DW_AT_GNU_odr_signature) */ + .uleb128 0x7 /* (DW_FORM_data8) */ + .uleb128 0x10 /* (DW_AT_stmt_list) */ + .uleb128 0x17 /* (DW_FORM_sec_offset) */ + .byte 0 + .byte 0 + .uleb128 0x2 /* (abbrev code) */ + .uleb128 0x2 /* (TAG: DW_TAG_class_type) */ + .byte 0x1 /* DW_children_yes */ + .uleb128 0x3 /* (DW_AT_name) */ + .uleb128 0x8 /* (DW_FORM_string) */ + .uleb128 0xb /* (DW_AT_byte_size) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x3a /* (DW_AT_decl_file) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x3b /* (DW_AT_decl_line) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x1 /* (DW_AT_sibling) */ + .uleb128 0x13 /* (DW_FORM_ref4) */ + .byte 0 + .byte 0 + .uleb128 0x3 /* (abbrev code) */ + .uleb128 0xd /* (TAG: DW_TAG_member) */ + .byte 0 /* DW_children_no */ + .uleb128 0x3 /* (DW_AT_name) */ + .uleb128 0x8 /* (DW_FORM_string) */ + .uleb128 0x3a /* (DW_AT_decl_file) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x3b /* (DW_AT_decl_line) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x49 /* (DW_AT_type) */ + .uleb128 0x13 /* (DW_FORM_ref4) */ + .uleb128 0x38 /* (DW_AT_data_member_location) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x32 /* (DW_AT_accessibility) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .byte 0 + .byte 0 + .uleb128 0x4 /* (abbrev code) */ + .uleb128 0x24 /* (TAG: DW_TAG_base_type) */ + .byte 0 /* DW_children_no */ + .uleb128 0xb /* (DW_AT_byte_size) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x3e /* (DW_AT_encoding) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x3 /* (DW_AT_name) */ + .uleb128 0x8 /* (DW_FORM_string) */ + .byte 0 + .byte 0 + .uleb128 0x5 /* (abbrev code) */ + .uleb128 0x11 /* (TAG: DW_TAG_compile_unit) */ + .byte 0x1 /* DW_children_yes */ + .uleb128 0x25 /* (DW_AT_producer) */ + .uleb128 0xe /* (DW_FORM_strp) */ + .uleb128 0x13 /* (DW_AT_language) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x3 /* (DW_AT_name) */ + .uleb128 0xe /* (DW_FORM_strp) */ + .uleb128 0x1b /* (DW_AT_comp_dir) */ + .uleb128 0xe /* (DW_FORM_strp) */ + .uleb128 0x11 /* (DW_AT_low_pc) */ + .uleb128 0x1 /* (DW_FORM_addr) */ + .uleb128 0x12 /* (DW_AT_high_pc) */ + .uleb128 0x1 /* (DW_FORM_addr) */ + .uleb128 0x10 /* (DW_AT_stmt_list) */ + .uleb128 0x17 /* (DW_FORM_sec_offset) */ + .byte 0 + .byte 0 + .uleb128 0x6 /* (abbrev code) */ + .uleb128 0x2e /* (TAG: DW_TAG_subprogram) */ + .byte 0 /* DW_children_no */ + .uleb128 0x3f /* (DW_AT_external) */ + .uleb128 0x19 /* (DW_FORM_flag_present) */ + .uleb128 0x3 /* (DW_AT_name) */ + .uleb128 0xe /* (DW_FORM_strp) */ + .uleb128 0x3a /* (DW_AT_decl_file) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x3b /* (DW_AT_decl_line) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x49 /* (DW_AT_type) */ + .uleb128 0x13 /* (DW_FORM_ref4) */ + .uleb128 0x11 /* (DW_AT_low_pc) */ + .uleb128 0x1 /* (DW_FORM_addr) */ + .uleb128 0x12 /* (DW_AT_high_pc) */ + .uleb128 0x1 /* (DW_FORM_addr) */ + .uleb128 0x40 /* (DW_AT_frame_base) */ + .uleb128 0x18 /* (DW_FORM_exprloc) */ + .uleb128 0x2117 /* (DW_AT_GNU_all_call_sites) */ + .uleb128 0x19 /* (DW_FORM_flag_present) */ + .byte 0 + .byte 0 + .uleb128 0x7 /* (abbrev code) */ + .uleb128 0x34 /* (TAG: DW_TAG_variable) */ + .byte 0 /* DW_children_no */ + .uleb128 0x3 /* (DW_AT_name) */ + .uleb128 0x8 /* (DW_FORM_string) */ + .uleb128 0x3a /* (DW_AT_decl_file) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x3b /* (DW_AT_decl_line) */ + .uleb128 0xb /* (DW_FORM_data1) */ + .uleb128 0x49 /* (DW_AT_type) */ + .uleb128 0x20 /* (DW_FORM_ref_sig8) */ + .uleb128 0x3f /* (DW_AT_external) */ + .uleb128 0x19 /* (DW_FORM_flag_present) */ + .uleb128 0x2 /* (DW_AT_location) */ + .uleb128 0x18 /* (DW_FORM_exprloc) */ + .byte 0 + .byte 0 + + /* Manually inserted. */ + .uleb128 0x8 /* abbrev code */ + .uleb128 0x2 /* DW_TAG_class_type */ + .byte 0x0 /* DW_has_children_no */ + .uleb128 0x47 /* DW_AT_specification */ + .uleb128 0x13 /* DW_FORM_ref4 */ + .byte 0x0 /* Terminator */ + .byte 0x0 /* Terminator */ + /* End of manual insertion. */ + + .byte 0 + + .section .debug_aranges,"",@progbits + .4byte 0x1c /* Length of Address Ranges Info */ + .2byte 0x2 /* DWARF Version */ + .4byte .Ldebug_info0 /* Offset of Compilation Unit Info */ + .byte 0x4 /* Size of Address */ + .byte 0 /* Size of Segment Descriptor */ + .2byte 0 /* Pad to 8 byte boundary */ + .2byte 0 + .4byte .Ltext0 /* Address */ + .4byte .Letext0-.Ltext0 /* Length */ + .4byte 0 + .4byte 0 + + .section .debug_line,"",@progbits +.Ldebug_line0: + + .section .debug_str,"MS",@progbits,1 +.LASF0: + .string "GNU C++ 4.6.3 20120306" +.LASF2: + .string "." +.LASF1: + .string "pr13961.cc" +.LASF3: + .string "main" + diff --git a/gdb/testsuite/gdb.dwarf2/pr13961.exp b/gdb/testsuite/gdb.dwarf2/pr13961.exp new file mode 100644 index 00000000000..c70f2b26e38 --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/pr13961.exp @@ -0,0 +1,36 @@ +# Copyright 2012 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# A testcase to trigger the code path in bug 13961. + +load_lib dwarf.exp + +# This test can only be run on targets which support DWARF-2 and use gas. +if {![dwarf2_support]} { + return 0 +} + +set testfile "pr13961" +set srcfile ${testfile}.S +set binfile ${testfile}.x + +if { [prepare_for_testing ${testfile}.exp ${binfile} ${srcfile}] == -1 } { + return -1 +} + +gdb_test "break main" "Breakpoint.*at.*" + +# If we get this far gdb didn't crash. +pass $testfile -- 2.30.2