isl_dim_replace: call isl_dim_cow before changing isl_dim

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

diff --git a/isl_dim.c b/isl_dim.c
index 2002fb6..d198fa5 100644 (file)
--- a/isl_dim.c
+++ b/isl_dim.c
@@ -1098,6 +1098,8 @@ __isl_give isl_dim *isl_dim_flatten(__isl_take isl_dim *dim)
 __isl_give isl_dim *isl_dim_replace(__isl_take isl_dim *dst,
        enum isl_dim_type type, __isl_keep isl_dim *src)
 {
+       dst = isl_dim_cow(dst);
+
        if (!dst || !src)
                goto error;