path: root/src/string/swab.c
diff options
authorRich Felker <>2014-10-04 11:14:01 -0400
committerRich Felker <>2014-10-04 11:14:01 -0400
commitdccbf4c809efc311aa37da71de70d04dfd8b0db3 (patch)
treee2651ba2140ab3d6b0a3b07e2d5f75df29cccfbb /src/string/swab.c
parent05cef96d9e63a00b319f88343cf9869c8e612843 (diff)
fix handling of odd lengths in swab function
this function is specified to leave the last byte with "unspecified disposition" when the length is odd, so for the most part correct programs should not be calling swab with odd lengths. however, doing so is permitted, and should not write past the end of the destination buffer.
Diffstat (limited to 'src/string/swab.c')
1 files changed, 1 insertions, 1 deletions
diff --git a/src/string/swab.c b/src/string/swab.c
index 9ed6fcda..ace0f466 100644
--- a/src/string/swab.c
+++ b/src/string/swab.c
@@ -4,7 +4,7 @@ void swab(const void *restrict _src, void *restrict _dest, ssize_t n)
const char *src = _src;
char *dest = _dest;
- for (; n>0; n-=2) {
+ for (; n>1; n-=2) {
dest[0] = src[1];
dest[1] = src[0];
dest += 2;