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-rw-r--r--src/string/x86_64/memset.s2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/string/x86_64/memset.s b/src/string/x86_64/memset.s
index 263336b5..3cc8fcf6 100644
--- a/src/string/x86_64/memset.s
+++ b/src/string/x86_64/memset.s
@@ -9,7 +9,7 @@ memset:
 	cmp $16,%rdx
 	jb 1f
 
-	mov %rdx,%rcx
+	lea -1(%rdx),%rcx
 	mov %rdi,%r8
 	shr $3,%rcx
 	mov %rax,-8(%rdi,%rdx)