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Port to 32-bit sparc64

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Backport from master.
Problem reported by Ulrich Mueller; fix suggested by Eli Zaretskii
and Andreas Schwab (Bug#30855).
* src/alloc.c (mark_memory): Call mark_maybe_object only on
pointers that are properly aligned for Lisp_Object.
This commit is contained in:
Paul Eggert 2018-03-20 09:54:20 -07:00
parent 23527013c7
commit d09c488cb5
1 changed files with 5 additions and 1 deletions
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6
src/alloc.c
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@ -4983,7 +4983,11 @@ mark_memory (void *start, void *end)
for (pp = start; (void *) pp < end; pp += GC_POINTER_ALIGNMENT)
{
mark_maybe_pointer (*(void **) pp);
mark_maybe_object (*(Lisp_Object *) pp);
verify (alignof (Lisp_Object) % GC_POINTER_ALIGNMENT == 0);
if (alignof (Lisp_Object) == GC_POINTER_ALIGNMENT
|| (uintptr_t) pp % alignof (Lisp_Object) == 0)
mark_maybe_object (*(Lisp_Object *) pp);
}
}