commit 946276b56c008c4049143e3f29f1b54138b3bee5
author Ryan C. Gordon <icculus@icculus.org> Fri Jul 24 22:24:03 2020 -0400
committer Ryan C. Gordon <icculus@icculus.org> Fri Jul 24 22:24:03 2020 -0400
tree 27ded5be7a4eeb43db404e3baf18259e05bfc79c
parent 0da79cf76222ab678cd70e783693cfc27d727ee9

stdlib: Corrected implementation of SDL_wcsncmp.

It was a copy/paste of SDL_strcmp, apparently, not SDL_strncmp, so it ignored
the maxlen parameter.

Thanks to Jack Powell for pointing this out!

src/stdlib/SDL_string.c

diff --git a/src/stdlib/SDL_string.c b/src/stdlib/SDL_string.c
index 857c40b..7abeafd 100644
--- a/src/stdlib/SDL_string.c
+++ b/src/stdlib/SDL_string.c
@@ -516,13 +516,18 @@
 #if defined(HAVE_WCSNCMP)
     return wcsncmp(str1, str2, maxlen);
 #else
-    while (*str1 && *str2) {
+    while (*str1 && *str2 && maxlen) {
         if (*str1 != *str2)
             break;
         ++str1;
         ++str2;
+        --maxlen;
     }
-    return (int)(*str1 - *str2);
+    if (!maxlen) {
+        return 0;
+    }
+    return (int) (*str1 - *str2);
+
 #endif /* HAVE_WCSNCMP */
 }