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malloc: Fix Os build on some ABIs 

I have not checked with all versions for all ABIs, but I saw failures
with gcc-14 on arm, alpha, hppa, i686, sparc, sh4, and microblaze.
Reviewed-by: Collin Funk <collin.funk1@gmail.com>
This commit is contained in:
Adhemerval Zanella 2025-09-06 19:21:35 -03:00
parent b173557da9
commit b9fe06a8a8
1 changed files with 6 additions and 0 deletions
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6
malloc/malloc.c
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@ -3305,10 +3305,16 @@ tcache_get_align (size_t nb, size_t alignment)
mangled = true;
}
/* GCC compiling for -Os warns on some architectures that csize may be
uninitialized. However, if 'te' is not NULL, csize is always
initialized in the loop above. */
DIAG_PUSH_NEEDS_COMMENT;
DIAG_IGNORE_Os_NEEDS_COMMENT (12, "-Wmaybe-uninitialized");
if (te != NULL
&& csize == nb
&& PTR_IS_ALIGNED (te, alignment))
return tag_new_usable (tcache_get_n (tc_idx, tep, mangled));
DIAG_POP_NEEDS_COMMENT;
}
return NULL;
}