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Diffstat (limited to 'src/Util/Tactics/ConstrFail.v')
| -rw-r--r-- | src/Util/Tactics/ConstrFail.v | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/Util/Tactics/ConstrFail.v b/src/Util/Tactics/ConstrFail.v new file mode 100644 index 000000000..fe8a05630 --- /dev/null +++ b/src/Util/Tactics/ConstrFail.v @@ -0,0 +1,9 @@ +(** A tactic that executes immediately (during expression evaluation / constr-construction) and fails. Ideally we can eventually give it a nicer error message. COQBUG(3913) *) + +Ltac constr_fail := + let __ := match goal with _ => fail 1 "Constr construction failed. Please look at the message log (*coq*, or run your tactic again inside Fail or try) to see more details" end in + (). + +Ltac constr_fail_with msg_tac := + let __ := match goal with _ => msg_tac () end in + constr_fail. |