fix fwrite return value when full write does not succeed

diff --git a/src/stdio/fwrite.c b/src/stdio/fwrite.c
index 02908c4..1b8641a 100644 (file)
--- a/src/stdio/fwrite.c
+++ b/src/stdio/fwrite.c
@@ -31,7 +31,7 @@ size_t fwrite(const void *src, size_t size, size_t nmemb, FILE *f)
        FLOCK(f);
        k = __fwritex(src, l, f);
        FUNLOCK(f);
-       return k==l ? nmemb : l/size;
+       return k==l ? nmemb : k/size;
 }
 
 weak_alias(fwrite, fwrite_unlocked);