isl_basic_map_align_divs: fix potential invalid access

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

diff --git a/isl_map.c b/isl_map.c
index 5c693b0..4233b46 100644 (file)
--- a/isl_map.c
+++ b/isl_map.c
@@ -7611,7 +7611,7 @@ struct isl_basic_map *isl_basic_map_align_divs(
                struct isl_basic_map *dst, struct isl_basic_map *src)
 {
        int i;
-       unsigned total = isl_space_dim(src->dim, isl_dim_all);
+       unsigned total;
 
        if (!dst || !src)
                goto error;
@@ -7628,6 +7628,7 @@ struct isl_basic_map *isl_basic_map_align_divs(
                        src->n_div, 0, 2 * src->n_div);
        if (!dst)
                return NULL;
+       total = isl_space_dim(src->dim, isl_dim_all);
        for (i = 0; i < src->n_div; ++i) {
                int j = find_div(dst, src, i);
                if (j < 0) {