isl_stream_new_str: fail on NULL input

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>

diff --git a/isl_stream.c b/isl_stream.c
index c70b4be..68f6e52 100644 (file)
--- a/isl_stream.c
+++ b/isl_stream.c
@@ -173,7 +173,10 @@ struct isl_stream* isl_stream_new_file(struct isl_ctx *ctx, FILE *file)
 
 struct isl_stream* isl_stream_new_str(struct isl_ctx *ctx, const char *str)
 {
-       struct isl_stream *s = isl_stream_new(ctx);
+       struct isl_stream *s;
+       if (!str)
+               return NULL;
+       s = isl_stream_new(ctx);
        if (!s)
                return NULL;
        s->str = str;