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libctf: exclude always-emitted Solaris symbols from the symtypetab

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If we're skipping _BEGIN_ and _END_ we should certainly skip all the other
ABI-required always-emitted symbols given in ld/emultempl/solaris2*em as
well.  (This fixes a couple of diagnostics tests, but that's just because
the tests are quite sensitive to CTF section sizes, and introducing any
symtypetab entries for those tests perturbs those.)

Some of these are usually STT_NOTYPE, but not always: if programs already
emitted the symbol they might end up with any type, in particular
STT_OBJECT, and appear in the symtypetabs.

[nca: added commit log, added more symbols]

libctf/
	PR libctf/33162
	* ctf-serialize.c (ctf_symtab_skippable): Skip
	more always-emitted Solaris symbols.

(cherry picked from commit 4214ca9036)
This commit is contained in:
Rainer Orth
2025-07-16 16:55:51 +01:00
committed by Nick Alcock
parent 32830073ea
commit e54a1de951
1 changed files with 6 additions and 0 deletions
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6
libctf/ctf-serialize.c
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@@ -74,6 +74,12 @@ ctf_symtab_skippable (ctf_link_sym_t *sym)
|| sym->st_shndx == SHN_UNDEF
|| strcmp (sym->st_name, "_START_") == 0
|| strcmp (sym->st_name, "_END_") == 0
|| strcmp (sym->st_name, "_DYNAMIC") == 0
|| strcmp (sym->st_name, "_GLOBAL_OFFSET_TABLE_") == 0
|| strcmp (sym->st_name, "_PROCEDURE_LINKAGE_TABLE_") == 0
|| strcmp (sym->st_name, "_edata") == 0
|| strcmp (sym->st_name, "_end") == 0
|| strcmp (sym->st_name, "_etext") == 0
|| (sym->st_type == STT_OBJECT && sym->st_shndx == SHN_EXTABS
&& sym->st_value == 0));
}