be717f03ef
This primitive is used by the `exact` tactic. This issue allowed users to create loops in the metavariable assignment. closes #4773
11 lines
205 B
Text
11 lines
205 B
Text
/--
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error: tactic 'exact' failed, attempting to close the goal using
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?loop
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this is often due occurs-check failure
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case loop
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⊢ False
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-/
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#guard_msgs in
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example : False := by
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refine ?loop
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exact ?loop
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