swift234

[swiftc] Add test case for crash triggered in swift::TypeChecker::applyUnboundGenericArguments(swift::UnboundGenericType*, swift::SourceLoc, swift::DeclContext*, llvm::MutableArrayRef<swift::TypeLoc>, bool, swift::GenericTypeResolver*)

Stack trace:

```
swift: /path/to/swift/lib/Sema/TypeCheckType.cpp:484: swift::Type swift::TypeChecker::applyUnboundGenericArguments(swift::UnboundGenericType *, swift::SourceLoc, swift::DeclContext *, MutableArrayRef<swift::TypeLoc>, bool, swift::GenericTypeResolver *): Assertion `TAD->getGenericParams()->getAllArchetypes().size() == genericArgs.size() && "argument arity mismatch"' failed.
8  swift           0x0000000000ee8e4b swift::TypeChecker::applyUnboundGenericArguments(swift::UnboundGenericType*, swift::SourceLoc, swift::DeclContext*, llvm::MutableArrayRef<swift::TypeLoc>, bool, swift::GenericTypeResolver*) + 1259
9  swift           0x0000000000ee880f swift::TypeChecker::applyGenericArguments(swift::Type, swift::SourceLoc, swift::DeclContext*, swift::GenericIdentTypeRepr*, bool, swift::GenericTypeResolver*) + 431
13 swift           0x0000000000ee8fde swift::TypeChecker::resolveIdentifierType(swift::DeclContext*, swift::IdentTypeRepr*, swift::OptionSet<swift::TypeResolutionFlags, unsigned int>, bool, swift::GenericTypeResolver*, llvm::function_ref<bool (swift::TypeCheckRequest)>*) + 158
15 swift           0x0000000000ee9ef4 swift::TypeChecker::resolveType(swift::TypeRepr*, swift::DeclContext*, swift::OptionSet<swift::TypeResolutionFlags, unsigned int>, swift::GenericTypeResolver*, llvm::function_ref<bool (swift::TypeCheckRequest)>*) + 164
16 swift           0x0000000000ee8eda swift::TypeChecker::validateType(swift::TypeLoc&, swift::DeclContext*, swift::OptionSet<swift::TypeResolutionFlags, unsigned int>, swift::GenericTypeResolver*, llvm::function_ref<bool (swift::TypeCheckRequest)>*) + 42
17 swift           0x0000000000fa283a swift::IterativeTypeChecker::processResolveTypeDecl(swift::TypeDecl*, llvm::function_ref<bool (swift::TypeCheckRequest)>) + 202
18 swift           0x0000000000f7f2cd swift::IterativeTypeChecker::satisfy(swift::TypeCheckRequest) + 493
21 swift           0x0000000000e7f3eb swift::TypeChecker::validateDecl(swift::ValueDecl*, bool) + 3739
23 swift           0x0000000000e84056 swift::TypeChecker::typeCheckDecl(swift::Decl*, bool) + 150
24 swift           0x0000000000ea6df2 swift::performTypeChecking(swift::SourceFile&, swift::TopLevelContext&, swift::OptionSet<swift::TypeCheckingFlags, unsigned int>, unsigned int) + 994
25 swift           0x0000000000cdd0bf swift::CompilerInstance::performSema() + 3295
27 swift           0x0000000000790c7f frontend_main(llvm::ArrayRef<char const*>, char const*, void*) + 2495
28 swift           0x000000000078b6f5 main + 2837
Stack dump:
0.	Program arguments: /path/to/swift/bin/swift -frontend -c -primary-file validation-test/compiler_crashers/28286-swift-typechecker-applyunboundgenericarguments.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -module-name main -o /tmp/28286-swift-typechecker-applyunboundgenericarguments-a4ff63.o
1.	While type-checking 'B' at validation-test/compiler_crashers/28286-swift-typechecker-applyunboundgenericarguments.swift:10:24
2.	While type-checking 'B' at validation-test/compiler_crashers/28286-swift-typechecker-applyunboundgenericarguments.swift:10:41
3.	While resolving type B<T> at [validation-test/compiler_crashers/28286-swift-typechecker-applyunboundgenericarguments.swift:10:56 - line:10:59] RangeText="B<T>"
<unknown>:0: error: unable to execute command: Aborted
<unknown>:0: error: compile command failed due to signal (use -v to see invocation)
```