isl_basic_set_opt: avoid invalid access on error path

[platform/upstream/isl.git] / test_inputs / negative.pip

1 3
#  n  1
1  1 -1 # n >= 1
-1

2 4
#  i  n  1
1  1  0  1 # i >= -1
1 -1  1  0 # i <= n