isl_input.c: read_conjuncts: stop parsing conjuncts after first error

[platform/upstream/isl.git] / isl_input.c

diff --git a/isl_input.c b/isl_input.c
index b032bf1..bd3b774 100644 (file)
--- a/isl_input.c
+++ b/isl_input.c
@@ -1352,7 +1352,7 @@ static __isl_give isl_map *read_conjuncts(struct isl_stream *s,
        if (negate)
                res = isl_map_subtract(isl_map_copy(map), res);
 
-       while (isl_stream_eat_if_available(s, ISL_TOKEN_AND)) {
+       while (res && isl_stream_eat_if_available(s, ISL_TOKEN_AND)) {
                isl_map *res_i;
 
                negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);