From dc08d67a27ffeb26889a56daa573ccc56daa1c0d Mon Sep 17 00:00:00 2001 From: Clément Pit--Claudel Date: Sun, 23 Aug 2015 00:12:04 -0700 Subject: Make quantifier splitting a two step process This fixes a bug that affected Monad.dfy --- Test/triggers/regression-tests.dfy | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 Test/triggers/regression-tests.dfy (limited to 'Test/triggers/regression-tests.dfy') diff --git a/Test/triggers/regression-tests.dfy b/Test/triggers/regression-tests.dfy new file mode 100644 index 00000000..263e424a --- /dev/null +++ b/Test/triggers/regression-tests.dfy @@ -0,0 +1,20 @@ +// RUN: %dafny /compile:0 /print:"%t.print" /dprint:"%t.dprint" /autoTriggers:1 /printTooltips "%s" > "%t" +// RUN: %diff "%s.expect" "%t" + +// This tests checks that quantifier splitting is resilient to the fact that +// certain statements (like calc) can return duplicate subexpressions. This was +// once a problem, because a quantifier that got returned twice would get split +// on the first pass over it, and would have its nely created children re-split +// on the second pass. This created a split quantifier whose children were split +// quantifiers, which violated an invariant of spliit quantifiers. + +abstract module Base { } + +module Blah refines Base { + lemma A() { + calc { + forall b :: b; + } + } +} + -- cgit v1.2.3