isl_ast_codegen.c: create_node: avoid invalid access on error

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

diff --git a/isl_ast_codegen.c b/isl_ast_codegen.c
index bec2939..33edeaa 100644 (file)
--- a/isl_ast_codegen.c
+++ b/isl_ast_codegen.c
@@ -1458,7 +1458,7 @@ static __isl_give isl_ast_graft *create_node(__isl_take isl_union_map *executed,
        if (isl_aff_get_denominator(offset, &data.d) < 0)
                executed = isl_union_map_free(executed);
 
-       if (isl_int_is_divisible_by(data.m, data.d))
+       if (executed && isl_int_is_divisible_by(data.m, data.d))
                isl_int_divexact(data.m, data.m, data.d);
        else
                isl_int_set_si(data.m, 1);