fix mismatched signatures for strtod_l family

[musl] / src / stdio / fgetln.c

diff --git a/src/stdio/fgetln.c b/src/stdio/fgetln.c
index afe12b5..5748435 100644 (file)
--- a/src/stdio/fgetln.c
+++ b/src/stdio/fgetln.c
@@ -8,7 +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;