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Fix: Optional pre-type won't cause a crash anymore #5442

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merged 9 commits into from
May 17, 2024
Merged

Fix: Optional pre-type won't cause a crash anymore #5442

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5906960
Add test for issue #5369
MikaelMayer May 14, 2024
a44d8b1
Fix: Optional pre-type won't cause a crash anymore
MikaelMayer May 14, 2024
79dfa4c
Merge branch 'master' into fix-5369-crash-new-resolver
MikaelMayer May 15, 2024
87aa2c5
Merge branch 'master' into fix-5369-crash-new-resolver
MikaelMayer May 15, 2024
eb0327c
Merge branch 'master' into fix-5369-crash-new-resolver
MikaelMayer May 16, 2024
cfa8acb
Added comment
MikaelMayer May 16, 2024
12310a8
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MikaelMayer May 16, 2024
0faf793
Update fix and expect file
keyboardDrummer May 17, 2024
4445b96
Merge branch 'master' into fix-5369-crash-new-resolver
MikaelMayer May 17, 2024
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Fix: Optional pre-type won't cause a crash anymore
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@MikaelMayer
MikaelMayer committed May 14, 2024
commit a44d8b1bce756e8b298467c0e5d0d48af2bd14c9
2 changes: 2 additions & 0 deletions Source/DafnyCore/Resolver/PreType/PreTypeConstraints.cs
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Expand Up @@ -583,6 +583,8 @@ public enum CommonConfirmationBag {
preType = preType.Normalize();
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Can you add a comment to ConfirmConstraint, or update its signature (parameter names) to make it clear what it does? I don't understand the meaning of the parameters or return value by looking at just its signature and comment.

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@MikaelMayer MikaelMayer May 16, 2024 •
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I can't, as I don't understand the code at a level high enough to do that. I don't have a mental model of what ConfirmConstraint does, nor about what code context it was called with. I'll leave it for @RustanLeino to comment on it.

if (preType is PreTypeProxy) {
return false;
} else if (preType is UnusedPreType) {
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Can you add a comment to the class UnusedPreType ?

return true;
}

var pt = (DPreType)preType;
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2 changes: 1 addition & 1 deletion Source/IntegrationTests/TestFiles/LitTests/LitTest/git-issues/git-issue-5369.dfy
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@@ -1,4 +1,4 @@
// RUN: %exits-with 2 %baredafny verify %args "%s" > "%t"
// RUN: %exits-with 2 %baredafny verify %args --type-system-refresh "%s" > "%t"
// RUN: %diff "%s.expect" "%t"

ghost function f2(items: set<nat>): (r:nat)
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8 changes: 6 additions & 2 deletions Source/IntegrationTests/TestFiles/LitTests/LitTest/git-issues/git-issue-5369.dfy.expect
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@@ -1,2 +1,6 @@

Dafny program verifier finished with TODO verified, TODO errors
git-issue-5369.dfy(20,2): Error: expression is not allowed to invoke a method (m)
git-issue-5369.dfy(20,40): Error: expression is not allowed to invoke a method (m)
git-issue-5369.dfy(20,42): Error: arguments to <= must have a common supertype (got int and (unused -- call to method m))
git-issue-5369.dfy(20,4): Error: expecting element type to be assignable to nat (got (unused -- call to method m))
git-issue-5369.dfy(32,9): Error: unresolved identifier: ThereIsASmallest
5 resolution/type errors detected in git-issue-5369.dfy
1 change: 1 addition & 0 deletions docs/dev/news/5369.fix
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@@ -0,0 +1 @@
Optional pre-type won't cause a crash anymore
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