X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=src%2Fstdio%2Ffgetln.c;h=5748435d9f6f937c07cd448182df0cc875f0e871;hb=e1a51185ceb4386481491e11f6dd39569b9e54f7;hp=06b8883756e4356f3a0cb96c8d412c9db58b031c;hpb=2d93d6446191def352b8913e859d6104f1398c72;p=musl

diff --git a/src/stdio/fgetln.c b/src/stdio/fgetln.c
index 06b88837..5748435d 100644
--- a/src/stdio/fgetln.c
+++ b/src/stdio/fgetln.c
@@ -1,4 +1,6 @@
+#define _GNU_SOURCE
 #include "stdio_impl.h"
+#include <string.h>
 
 char *fgetln(FILE *f, size_t *plen)
 {
@@ -6,7 +8,7 @@ char *fgetln(FILE *f, size_t *plen)
 	ssize_t l;
 	FLOCK(f);
 	ungetc(getc_unlocked(f), f);
-	if ((z=memchr(f->rpos, '\n', f->rend - f->rpos))) {
+	if (f->rend && (z=memchr(f->rpos, '\n', f->rend - f->rpos))) {
 		ret = (char *)f->rpos;
 		*plen = ++z - ret;
 		f->rpos = (void *)z;