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c0419c024b
GCC doesn't put builtin function symbol references, which are defined in the shared C library, in the IR symbol table. When linker rescans shared objects and archives for newly added symbol references generated from the IR inputs, it skips definitions of the builtin functions in shared objects and archives. Add first_hash to elf_link_hash_table to track unreferenced definitions defined first in shared objects and archives. Always use them to resolve any references. bfd/ PR ld/31482 PR ld/31489 * elf-bfd.h (elf_link_hash_table): Add first_hash. * elflink.c (elf_link_add_to_first_hash): New function. (elf_link_add_object_symbols): Initialize first_hash for an IR input. Always use the first definition in shared object. Add the first unreferenced dynamic definition to first_hash. (_bfd_elf_archive_symbol_lookup): Add the first unreferenced definition to first_hash.. (elf_link_add_archive_symbols): Use the symbol definition in archive if symbol is defined first in this archive. (_bfd_elf_link_hash_table_free): Also free first_hash. ld/ PR ld/31482 PR ld/31489 * testsuite/ld-plugin/lto.exp: Add PR ld/31482 and PR ld/31489 tests. * testsuite/ld-elf/pr31482a-no-lto.c: New file. * testsuite/ld-elf/pr31482b-no-lto.c: Likewise. * testsuite/ld-elf/pr31482c-no-lto.c: Likewise. * testsuite/ld-elf/pr31482d-no-lto.c: Likewise. * testsuite/ld-plugin/pass1.out: Likewise. * testsuite/ld-plugin/pr31482a.c: Likewise. * testsuite/ld-plugin/pr31482b.c: Likewise. * testsuite/ld-plugin/pr31482c.c: Likewise.
9 lines
62 B
C
9 lines
62 B
C
extern void foo (void);
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int
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main()
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{
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foo ();
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return 0;
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}
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