Author: bdragon
Date: Wed Mar 11 23:34:44 2020
New Revision: 358902
URL: https://svnweb.freebsd.org/changeset/base/358902
Log:
Fix r358688 -- Remember to actually save r3 before processing.
Crash was noticed by pkubaj building gcc9.
Apparently non dword-aligned char pointers are somewhat rare in the wild.
Reported by: pkubaj
Sponsored by: Tag1 Consulting, Inc.
Modified:
head/lib/libc/powerpc64/string/memcpy.S
Modified: head/lib/libc/powerpc64/string/memcpy.S
==============================================================================
--- head/lib/libc/powerpc64/string/memcpy.S Wed Mar 11 22:25:45 2020
(r358901)
+++ head/lib/libc/powerpc64/string/memcpy.S Wed Mar 11 23:34:44 2020
(r358902)
@@ -58,8 +58,8 @@ ENTRY(FN_NAME)
andi. %r7, %r4, ALIGN_MASK
cmpd %r8, %r7
mr %r7, %r5
- bne .Lcopy_remaining_fix_index_byte
mr %r8, %r3 /* save dst */
+ bne .Lcopy_remaining_fix_index_byte
/* align src */
.Lalignment_loop:
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