X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=xdiff%2Fxmerge.c;h=9e13b25abc90350de4488276074dc282edc216b1;hb=b3f01ff29f7131e959bcfdfd004744d74d5fa319;hp=6d6fc1bc5e01be7305ec5101f43645a1dce69bd3;hpb=e1ba0f6340c1d72677c7792a0a82ecf05363026e;p=git.git

diff --git a/xdiff/xmerge.c b/xdiff/xmerge.c
index 6d6fc1bc5..9e13b25ab 100644
--- a/xdiff/xmerge.c
+++ b/xdiff/xmerge.c
@@ -336,7 +336,7 @@ static int xdl_refine_conflicts(xdfenv_t *xe1, xdfenv_t *xe2, xdmerge_t *m,
 static int line_contains_alnum(const char *ptr, long size)
 {
 	while (size--)
-		if (isalnum(*(ptr++)))
+		if (isalnum((unsigned char)*(ptr++)))
 			return 1;
 	return 0;
 }