https://groups.google.com/forum/#!original/isl-development/Otz1QKZDpzA/71GkTvqkCAAJ https://bugs.gentoo.org/702968 Subject: [MAINT PATCH] isl_basic_map_underlying_set: fix error handling Date: Tue, 7 Jan 2020 23:02:42 +0100 Message-Id: <20200107220242...@kotnet.org> X-Mailer: git-send-email 2.24.1.591.g12029dc57d MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Sven Verdoolaege The check for a valid bmap before accessing its n_div field was inadvertently removed in isl-0.21-230-g6a4c4bbf31 (isl_map.c: extract out shared isl_basic_map_{take,restore}_space, Thu Aug 11 10:27:49 2016 +0200). Reported-by: Richard Biener Signed-off-by: Sven Verdoolaege --- isl_map.c | 2 ++ 1 file changed, 2 insertions(+) --- a/isl_map.c +++ b/isl_map.c @@ -5511,6 +5511,8 @@ __isl_give isl_basic_set *isl_basic_map_underlying_set( !isl_space_is_named_or_nested(bmap->dim, isl_dim_out)) return bset_from_bmap(bmap); bmap = isl_basic_map_cow(bmap); + if (!bmap) + return NULL; space = isl_basic_map_take_space(bmap); space = isl_space_underlying(space, bmap->n_div); bmap = isl_basic_map_restore_space(bmap, space); -- 2.24.1.591.g12029dc57d