Commits
practicalswift committed 10c4204ef0b
[swiftc (53 vs. 5156)] Add crasher in swift::constraints::ConstraintSystem::assignFixedType(...)
Add test case for crash triggered in `swift::constraints::ConstraintSystem::assignFixedType(...)`.
Current number of unresolved compiler crashers: 53 (5156 resolved)
Assertion failure in [`lib/Sema/ConstraintGraph.cpp (line 207)`](https://github.com/apple/swift/blob/master/lib/Sema/ConstraintGraph.cpp#L207):
```
Assertion `!adjacency.FixedBinding && "Already marked as a fixed binding?"' failed.
When executing: void swift::constraints::ConstraintGraphNode::addFixedBinding(swift::TypeVariableType *)
```
Assertion context:
```
}
void ConstraintGraphNode::addFixedBinding(TypeVariableType *typeVar) {
auto &adjacency = getAdjacency(typeVar);
assert(!adjacency.FixedBinding && "Already marked as a fixed binding?");
adjacency.FixedBinding = true;
}
void ConstraintGraphNode::removeFixedBinding(TypeVariableType *typeVar) {
modifyAdjacency(typeVar, [](Adjacency &adj) {
```
Stack trace:
```
swift: /path/to/swift/lib/Sema/ConstraintGraph.cpp:207: void swift::constraints::ConstraintGraphNode::addFixedBinding(swift::TypeVariableType *): Assertion `!adjacency.FixedBinding && "Already marked as a fixed binding?"' failed.
9 swift 0x0000000000f61c3e swift::constraints::ConstraintSystem::assignFixedType(swift::TypeVariableType*, swift::Type, bool) + 366
10 swift 0x0000000000fc8f9e swift::constraints::ConstraintSystem::matchTypes(swift::Type, swift::Type, swift::constraints::TypeMatchKind, unsigned int, swift::constraints::ConstraintLocatorBuilder) + 3262
11 swift 0x0000000000fcd27d swift::constraints::ConstraintSystem::matchDeepEqualityTypes(swift::Type, swift::Type, swift::constraints::ConstraintLocatorBuilder) + 877
12 swift 0x0000000000fcdc15 swift::constraints::ConstraintSystem::simplifyRestrictedConstraint(swift::constraints::ConversionRestrictionKind, swift::Type, swift::Type, swift::constraints::TypeMatchKind, unsigned int, swift::constraints::ConstraintLocatorBuilder) + 1077
13 swift 0x0000000000fd5097 swift::constraints::ConstraintSystem::simplifyConstraint(swift::constraints::Constraint const&) + 439
14 swift 0x0000000000fddc0d swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 11277
15 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
16 swift 0x0000000000fddce4 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 11492
17 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
18 swift 0x0000000000fddce4 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 11492
19 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
20 swift 0x0000000000fdf3c1 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 17345
21 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
22 swift 0x0000000000fdf3c1 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 17345
23 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
24 swift 0x0000000000fdf3c1 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 17345
25 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
26 swift 0x0000000000fddce4 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 11492
27 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
28 swift 0x0000000000fddce4 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 11492
29 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
30 swift 0x0000000000fddce4 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 11492
31 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
32 swift 0x0000000000fddce4 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 11492
33 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
34 swift 0x0000000000fddce4 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 11492
35 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
36 swift 0x0000000000fddce4 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 11492
37 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
38 swift 0x0000000000fddce4 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 11492
39 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
40 swift 0x0000000000fddce4 swift::constraints::ConstraintSystem::solveSimplified(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 11492
41 swift 0x0000000000fd99c3 swift::constraints::ConstraintSystem::solveRec(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 323
42 swift 0x0000000000fd9779 swift::constraints::ConstraintSystem::solve(llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::FreeTypeVariableBinding) + 73
43 swift 0x0000000000ebd438 swift::TypeChecker::solveForExpression(swift::Expr*&, swift::DeclContext*, swift::Type, swift::FreeTypeVariableBinding, swift::ExprTypeCheckListener*, swift::constraints::ConstraintSystem&, llvm::SmallVectorImpl<swift::constraints::Solution>&, swift::OptionSet<swift::TypeCheckExprFlags, unsigned int>) + 808
44 swift 0x0000000000ec443d swift::TypeChecker::typeCheckExpression(swift::Expr*&, swift::DeclContext*, swift::TypeLoc, swift::ContextualTypePurpose, swift::OptionSet<swift::TypeCheckExprFlags, unsigned int>, swift::ExprTypeCheckListener*, swift::constraints::ConstraintSystem*) + 621
45 swift 0x0000000000ec55f0 swift::TypeChecker::typeCheckBinding(swift::Pattern*&, swift::Expr*&, swift::DeclContext*) + 352
46 swift 0x0000000000ec580b swift::TypeChecker::typeCheckPatternBinding(swift::PatternBindingDecl*, unsigned int) + 267
49 swift 0x0000000000ed7466 swift::TypeChecker::typeCheckDecl(swift::Decl*, bool) + 150
51 swift 0x0000000000f40ae6 swift::TypeChecker::typeCheckTopLevelCodeDecl(swift::TopLevelCodeDecl*) + 134
52 swift 0x0000000000efb40d swift::performTypeChecking(swift::SourceFile&, swift::TopLevelContext&, swift::OptionSet<swift::TypeCheckingFlags, unsigned int>, unsigned int, unsigned int) + 1133
53 swift 0x0000000000c7b5b9 swift::CompilerInstance::performSema() + 3289
55 swift 0x00000000007db487 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 2887
56 swift 0x00000000007a72b8 main + 2872
Stack dump:
0. Program arguments: /path/to/swift/bin/swift -frontend -c -primary-file validation-test/compiler_crashers/28400-swift-nominaltypedecl-prepareextensions.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -module-name main -o /tmp/28400-swift-nominaltypedecl-prepareextensions-72c649.o
1. While type-checking declaration 0x6578c80 at validation-test/compiler_crashers/28400-swift-nominaltypedecl-prepareextensions.swift:15:1
2. While type-checking expression at [validation-test/compiler_crashers/28400-swift-nominaltypedecl-prepareextensions.swift:15:9 - line:15:28] RangeText="s1 ?? s2 ?? s3 ?? []"
<unknown>:0: error: unable to execute command: Aborted
<unknown>:0: error: compile command failed due to signal (use -v to see invocation)
```