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Diffstat (limited to 'test-suite/bugs/opened/shouldnotfail/1811.v')
| -rw-r--r-- | test-suite/bugs/opened/shouldnotfail/1811.v | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test-suite/bugs/opened/shouldnotfail/1811.v b/test-suite/bugs/opened/shouldnotfail/1811.v new file mode 100644 index 00000000..037b7cb2 --- /dev/null +++ b/test-suite/bugs/opened/shouldnotfail/1811.v @@ -0,0 +1,9 @@ +Require Export Bool. + +Lemma neg2xor : forall b, xorb true b = negb b. +Proof. auto. Qed. + +Goal forall b1 b2, (negb b1 = b2) -> xorb true b1 = b2. +Proof. + intros b1 b2. + rewrite neg2xor.
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