isl_basic_set_swap_vars: handle NULL input
commit22d1388ec98ff19a5866aa12bd5180d181b6e38f
authorSven Verdoolaege <skimo@kotnet.org>
Sun, 2 Dec 2012 11:19:40 +0000 (2 12:19 +0100)
committerSven Verdoolaege <skimo@kotnet.org>
Sun, 2 Dec 2012 11:23:44 +0000 (2 12:23 +0100)
treeae536c1d6a7eec0f3d2592c85db201cf7b54dbe4
parent289548005c1ddb967c8b19b83e9b4503304a7cd1
isl_basic_set_swap_vars: handle NULL input

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