Signed-off-by: Waldemar Kozaczuk <jwkozac...@gmail.com>
---
libc/stdio/fopen.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libc/stdio/fopen.c b/libc/stdio/fopen.c
index 83452407..c6053c21 100644
--- a/libc/stdio/fopen.c
+++ b/libc/stdio/fopen.c
@@ -10,6 +10,11 @@ FILE *fopen(const char *restrict filename, const char
*restrict mode)
int fd;
int flags;
+ if (filename == NULL) {
+ errno = EFAULT;
+ return 0;
+ }
+
/* Check for valid initial mode character */
if (!strchr("rwa", *mode)) {
errno = EINVAL;
--
2.20.1
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