update ctype data to unicode 12.1.0

[musl] / src / stdio / fwrite.c

diff --git a/src/stdio/fwrite.c b/src/stdio/fwrite.c
index fa30c0d..7a567b2 100644 (file)
--- a/src/stdio/fwrite.c
+++ b/src/stdio/fwrite.c
@@ -28,6 +28,7 @@ size_t __fwritex(const unsigned char *restrict s, size_t l, FILE *restrict f)
 size_t fwrite(const void *restrict src, size_t size, size_t nmemb, FILE *restrict f)
 {
        size_t k, l = size*nmemb;
+       if (!size) nmemb = 0;
        FLOCK(f);
        k = __fwritex(src, l, f);
        FUNLOCK(f);