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author | Benjamin Barenblat <bbaren@mit.edu> | 2016-05-30 17:58:02 -0400 |
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committer | Benjamin Barenblat <bbaren@mit.edu> | 2016-05-30 17:58:02 -0400 |
commit | e67c951ad9c5c637e36a6f025ba3d6e3ad945416 (patch) | |
tree | 0cfb5c339602e4bdebf4bf97f3f0ccc3923c14d1 /Test/triggers/triggers-prevent-some-inlining.dfy | |
parent | 000aa762e1fee4b9bd83ec3d7c8b61fd203e2c9d (diff) | |
parent | df5c5f547990c1f80ab7594a1f9287ee03a61754 (diff) |
Merge commit 'df5c5f5'
Diffstat (limited to 'Test/triggers/triggers-prevent-some-inlining.dfy')
-rw-r--r-- | Test/triggers/triggers-prevent-some-inlining.dfy | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Test/triggers/triggers-prevent-some-inlining.dfy b/Test/triggers/triggers-prevent-some-inlining.dfy new file mode 100644 index 00000000..90af62a3 --- /dev/null +++ b/Test/triggers/triggers-prevent-some-inlining.dfy @@ -0,0 +1,26 @@ +// RUN: %dafny /compile:0 /print:"%t.print" /dprint:"%t.dprint" /autoTriggers:1 /printTooltips "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+
+// This file looks at the interactions between inlining and triggers. The
+// sum_is_sum predicate gets a {sum(a, b)} trigger, which explicitly depends on
+// one of the variables being passed in. Since triggers are generated prior to
+// inlining (inlining happens during translation), inlining the last two
+// instances of that call below would cause b+1 (a trigger killer) to pop up in
+// a trigger. This would create an invalid trigger, so Dafny doesn't let it
+// happen.
+
+function sum(a: int, b: int): int {
+ a + b
+}
+
+predicate sum_is_sum(b: int, c: int) {
+ forall a: int :: sum(a, b) + c == a + b + c
+}
+
+method can_we_inline(b: int, c: int)
+ ensures sum_is_sum(0, 0) // OK to inline
+ ensures sum_is_sum(b, c) // OK to inline
+ ensures sum_is_sum(b, c+1) // OK to inline
+ ensures sum_is_sum(b+1, c) // NOK to inline
+ ensures sum_is_sum(b+1, c+1) // NOK to inline
+{ }
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