+2015-02-19 Alan Modra <amodra@gmail.com>
+
+ PR ld/4317
+ * elflink.c (elf_link_input_bfd): Drop undefined local syms.
+ (elf_link_output_extsym): Drop local and global undefined syms.
+ Tidy. Expand comment.
+
2015-02-17 Alan Modra <amodra@gmail.com>
PR ld/17975
a regular file, or that we have been told to strip. However, if
h->indx is set to -2, the symbol is used by a reloc and we must
output it. */
+ strip = FALSE;
if (h->indx == -2)
- strip = FALSE;
+ ;
else if ((h->def_dynamic
|| h->ref_dynamic
|| h->root.type == bfd_link_hash_new)
&& h->root.u.undef.abfd != NULL
&& (h->root.u.undef.abfd->flags & BFD_PLUGIN) != 0)
strip = TRUE;
- else
- strip = FALSE;
/* If we're stripping it, and it's not a dynamic symbol, there's
- nothing else to do unless it is a forced local symbol or a
- STT_GNU_IFUNC symbol. */
+ nothing else to do. However, if it is a forced local symbol or
+ an ifunc symbol we need to give the backend finish_dynamic_symbol
+ function a chance to make it dynamic. */
if (strip
&& h->dynindx == -1
&& h->type != STT_GNU_IFUNC
}
}
- /* If we're stripping it, then it was just a dynamic symbol, and
- there's nothing else to do. */
- if (strip || (input_sec->flags & SEC_EXCLUDE) != 0)
+ /* If the symbol is undefined, and we didn't output it to .dynsym,
+ strip it from .symtab too. Obviously we can't do this for
+ relocatable output or when needed for --emit-relocs. */
+ else if (input_sec == bfd_und_section_ptr
+ && h->indx != -2
+ && !flinfo->info->relocatable)
+ return TRUE;
+ /* Also strip others that we couldn't earlier due to dynamic symbol
+ processing. */
+ if (strip)
+ return TRUE;
+ if ((input_sec->flags & SEC_EXCLUDE) != 0)
return TRUE;
/* Output a FILE symbol so that following locals are not associated
*ppsection = isec;
- /* Don't output the first, undefined, symbol. */
- if (ppsection == flinfo->sections)
+ /* Don't output the first, undefined, symbol. In fact, don't
+ output any undefined local symbol. */
+ if (isec == bfd_und_section_ptr)
continue;
if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
+2015-02-19 Alan Modra <amodra@gmail.com>
+
+ PR ld/4317
+ * ld-aarch64/gc-tls-relocs.d, * ld-cris/locref2.d,
+ * ld-elf/ehdr_start-weak.d, * ld-elf/group1.d,
+ * ld-i386/compressed1.d, * ld-ia64/error1.d, * ld-ia64/error2.d,
+ * ld-ia64/error3.d, * ld-mips-elf/pic-and-nonpic-1.nd,
+ * ld-mmix/undef-3.d, * ld-powerpc/tlsexe.r, * ld-powerpc/tlsexetoc.r,
+ * ld-powerpc/tlsso.r, * ld-powerpc/tlstocso.r,
+ * ld-x86-64/compressed1.d, * ld-x86-64/pie1.d: Update.
+
2015-02-17 Alan Modra <amodra@gmail.com>
PR ld/17975
0+9000 l d \.got 0+ \.got
0+0000 l df \*ABS\* 0+ .*
0+0000 l df \*ABS\* 0+
-0+0000 l \*UND\* 0+ __tls_get_addr
0+9000 l O \.got 0+ _GLOBAL_OFFSET_TABLE_
0+8000 g \.text 0+ _start
SYMBOL TABLE:
#...
0+82088 l O \.got 0+ _GLOBAL_OFFSET_TABLE_
-0+ w \*UND\* 0+ expfn
-0+ w \*UND\* 0+ expobj
#...
Disassembly of section \.text:
#...
#target: *-*-linux* *-*-gnu* *-*-nacl*
#xfail: frv-*-*
+#failif
+#...
+.* __ehdr_start
#...
-\s+[wU] __ehdr_start
-#pass
Symbol table '.symtab' contains .* entries:
#...
.*: 0+1000 +0 +(NOTYPE|OBJECT) +WEAK +DEFAULT +. foo
-.*: 0+0000 +0 +(NOTYPE|OBJECT) +GLOBAL +DEFAULT +UND bar
-#...
#as: --32
#ld: -e foo -melf_i386 --noinhibit-exec
#warning: .*/compressed1.c:13: undefined reference to .bar.
-#nm: -n
-
-#...
-[ \t]+U bar
-#pass
#ld: -unresolved-symbols=ignore-all
#readelf: -s
-#...
-[ ]+[0-9]+:[ ]+[0]+[ ]+0[ ]+NOTYPE[ ]+GLOBAL DEFAULT[ ]+UND[ ]+foo
#pass
#ld: -pie -unresolved-symbols=ignore-all
#readelf: -s
-#...
-[ ]+[0-9]+:[ ]+[0]+[ ]+0[ ]+NOTYPE[ ]+GLOBAL DEFAULT[ ]+UND[ ]+foo
#pass
#ld: -pie -shared
#readelf: -s
-#...
-[ ]+[0-9]+:[ ]+[0]+[ ]+0[ ]+NOTYPE[ ]+GLOBAL DEFAULT[ ]+UND[ ]+foo
#pass
.*: 00068000 +0 +NOTYPE +LOCAL +DEFAULT +ABS _gp
.*: 00041018 +8 +FUNC +LOCAL +DEFAULT .* .pic.f1
.*: 00041000 +16 +FUNC +LOCAL +DEFAULT .* .pic.f2
-.*: 00000000 +0 +OBJECT +GLOBAL +DEFAULT +UND _gp_disp
.*: 00041050 +14 +FUNC +GLOBAL +DEFAULT +\[MIPS16\] .* f3
.*: 00041060 +24 +FUNC +GLOBAL +DEFAULT .* __start
.*: 0004103c +20 +FUNC +GLOBAL +DEFAULT .* f2
+\[ 2\] \.shstrtab +STRTAB +0+ +0+7c
+0+21 +0+ +0 +0 +1
+\[ 3\] \.symtab +SYMTAB +0+ .*
- +0+c0 +0+18 +4 +2 +8
+ +0+a8 +0+18 +4 +2 +8
+\[ 4\] \.strtab +STRTAB +0+ .*
- +0+2f +0+ +0 +0 +1
+ +0+28 +0+ +0 +0 +1
Key to Flags:
#...
-Symbol table '\.symtab' contains 8 entries:
+Symbol table '\.symtab' contains 7 entries:
+Num: +Value +Size +Type +Bind +Vis +Ndx +Name
+0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND
+1: 0+ +0 +SECTION +LOCAL +DEFAULT +1
- +2: 0+ +0 +NOTYPE +GLOBAL +DEFAULT +UND undefd
- +3: 0+ +0 +NOTYPE +GLOBAL +DEFAULT +1 _start
- +4: 2000000000000000 +0 +NOTYPE +GLOBAL +DEFAULT +1 __bss_start
- +5: 2000000000000000 +0 +NOTYPE +GLOBAL +DEFAULT +1 _edata
- +6: 2000000000000000 +0 +NOTYPE +GLOBAL +DEFAULT +1 _end
- +7: 0+ +0 +NOTYPE +GLOBAL +DEFAULT +1 _start\.
+ +2: 0+ +0 +NOTYPE +GLOBAL +DEFAULT +1 _start
+ +3: 2000000000000000 +0 +NOTYPE +GLOBAL +DEFAULT +1 __bss_start
+ +4: 2000000000000000 +0 +NOTYPE +GLOBAL +DEFAULT +1 _edata
+ +5: 2000000000000000 +0 +NOTYPE +GLOBAL +DEFAULT +1 _end
+ +6: 0+ +0 +NOTYPE +GLOBAL +DEFAULT +1 _start\.
.* TLS +LOCAL +DEFAULT +8 le5
.* FILE +LOCAL +DEFAULT +ABS
.* OBJECT +LOCAL +DEFAULT +10 _DYNAMIC
-.* (NOTYPE +LOCAL +DEFAULT +7 __glink_PLTresolve|(FUNC|NOTYPE) +LOCAL +DEFAULT +UND \.__tls_get_addr(|_opt))
-.* (NOTYPE +LOCAL +DEFAULT +7 .*\.plt_call\.__tls_get_addr(|_opt)|NOTYPE +LOCAL +DEFAULT +7 __glink_PLTresolve)
-.* ((FUNC|NOTYPE) +LOCAL +DEFAULT +UND \.__tls_get_addr(|_opt)|NOTYPE +LOCAL +DEFAULT +7 .*\.plt_call\.__tls_get_addr(|_opt))
+.* NOTYPE +LOCAL +DEFAULT +7 __glink_PLTresolve
+.* NOTYPE +LOCAL +DEFAULT +7 .*\.plt_call\.__tls_get_addr(|_opt)
.* GLOBAL +DEFAULT +UND gd
.* GLOBAL +DEFAULT +9 le0
.* GLOBAL +DEFAULT +9 ld0
.* NOTYPE +LOCAL +DEFAULT +12 \.Lie0
.* FILE +LOCAL +DEFAULT +ABS
.* OBJECT +LOCAL +DEFAULT +10 _DYNAMIC
-.* (NOTYPE +LOCAL +DEFAULT +7 __glink_PLTresolve|(FUNC|NOTYPE) +LOCAL +DEFAULT +UND \.__tls_get_addr(|_opt))
-.* (NOTYPE +LOCAL +DEFAULT +7 .*\.plt_call\.__tls_get_addr(|_opt)|NOTYPE +LOCAL +DEFAULT +7 __glink_PLTresolve)
-.* ((FUNC|NOTYPE) +LOCAL +DEFAULT +UND \.__tls_get_addr(|_opt)|NOTYPE +LOCAL +DEFAULT +7 .*\.plt_call\.__tls_get_addr(|_opt))
+.* NOTYPE +LOCAL +DEFAULT +7 __glink_PLTresolve
+.* NOTYPE +LOCAL +DEFAULT +7 .*\.plt_call\.__tls_get_addr(|_opt)
.* TLS +GLOBAL +DEFAULT +UND gd
.* TLS +GLOBAL +DEFAULT +9 le0
.* TLS +GLOBAL +DEFAULT +9 ld0
.* OBJECT +LOCAL +DEFAULT +9 _DYNAMIC
.* NOTYPE +LOCAL +DEFAULT +6 .*\.plt_call\.__tls_get_addr
.* NOTYPE +LOCAL +DEFAULT +6 __glink_PLTresolve
-.* NOTYPE +LOCAL +DEFAULT +UND \.__tls_get_addr
.* TLS +GLOBAL +DEFAULT +UND gd
.* TLS +GLOBAL +DEFAULT +8 le0
.* NOTYPE +GLOBAL +DEFAULT +UND __tls_get_addr
.* OBJECT +LOCAL +DEFAULT +9 _DYNAMIC
.* NOTYPE +LOCAL +DEFAULT +6 .*\.plt_call\.__tls_get_addr
.* NOTYPE +LOCAL +DEFAULT +6 __glink_PLTresolve
-.* NOTYPE +LOCAL +DEFAULT +UND \.__tls_get_addr
.* TLS +GLOBAL +DEFAULT +UND gd
.* TLS +GLOBAL +DEFAULT +8 le0
.* NOTYPE +GLOBAL +DEFAULT +UND __tls_get_addr
#as: --64
#ld: -e foo -melf_x86_64 --noinhibit-exec
#warning: .*/compressed1.c:13: undefined reference to .bar.
-#nm: -n
-
-#...
-[ \t]+U bar
-#pass
#name: PIE with undefined symbol
#as: --64
#ld: -pie -melf_x86_64 --noinhibit-exec
-#readelf: -s --wide
#warning: \A[^\n]*\.o[^\n]*In function `_start':\n[^\n]*: undefined reference to `foo'\Z
-
-#...
- +[0-9]+: +[0-9a-f]+ +0 +NOTYPE +GLOBAL +DEFAULT +UND foo
-#pass
projects / binutils-gdb.git / commitdiff