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| author | H.J. Lu <hjl.tools@gmail.com> | 2016-05-06 09:46:34 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2016-05-06 09:46:50 -0700 |
| commit | 97196564c7e981bab7b968e19b171c5dfcb28c3c (patch) | |
| tree | 4a4394c52a91f1baf906d5541da3d8653bf82991 /bfd/elf-bfd.h | |
| parent | 030e823caf4243a3337c2134a4a2f38490d3cf3d (diff) | |
| download | gdb-97196564c7e981bab7b968e19b171c5dfcb28c3c.zip gdb-97196564c7e981bab7b968e19b171c5dfcb28c3c.tar.gz gdb-97196564c7e981bab7b968e19b171c5dfcb28c3c.tar.bz2 | |
Strip global symbol defined in discarded section
When a global symbol is defined in COMDAT group, we shouldn't leave an
undefined symbol in symbol table when the symbol section is discarded
unless there is a reference to the symbol outside of COMDAT group.
bfd/
PR ld/17550
* elf-bfd.h (elf_link_hash_entry): Update comments for indx,
documenting that indx == -3 if symbol is defined in a discarded
section.
* elflink.c (elf_link_add_object_symbols): Set indx to -3 if
symbol is defined in a discarded section.
(elf_link_output_extsym): Strip a global symbol defined in a
discarded section.
ld/
PR ld/17550
* testsuite/ld-elf/pr17550-1.s: New file.
* testsuite/ld-elf/pr17550-2.s: Likewise.
* testsuite/ld-elf/pr17550-3.s: Likewise.
* testsuite/ld-elf/pr17550-4.s: Likewise.
* testsuite/ld-elf/pr17550a.d: Likewise.
* testsuite/ld-elf/pr17550b.d: Likewise.
* testsuite/ld-elf/pr17550c.d: Likewise.
* testsuite/ld-elf/pr17550d.d: Likewise.
Diffstat (limited to 'bfd/elf-bfd.h')
| -rw-r--r-- | bfd/elf-bfd.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h index 9067dd9..863fc39 100644 --- a/bfd/elf-bfd.h +++ b/bfd/elf-bfd.h @@ -124,7 +124,8 @@ struct elf_link_hash_entry struct bfd_link_hash_entry root; /* Symbol index in output file. This is initialized to -1. It is - set to -2 if the symbol is used by a reloc. */ + set to -2 if the symbol is used by a reloc. It is set to -3 if + this symbol is defined in a discarded section. */ long indx; /* Symbol index as a dynamic symbol. Initialized to -1, and remains |