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> swift --version
Apple Swift version 5.2 (swiftlang-1103.0.32.1 clang-1103.0.32.29)
Target: x86_64-apple-darwin19.4.0
Additional Detail from JIRA
Votes
0
Component/s
Compiler
Labels
Bug
Assignee
None
Priority
Medium
md5: bee9a80b85986a4d2ed9df54dfaf1571
duplicates:
SR-75 Referencing a protocol function crashes the compiler
Issue Description:
I'm getting a segmentation fault when I try to compile code that includes an instance call using protocol methods (not sure how to properly word this). Consider this example:
{{
import Foundation
protocol SomeProtocol {
func someMethod()
}
class SomeClass: SomeProtocol {
func someMethod() {
print("hello")
}
}
let a = SomeClass()
SomeProtocol.someMethod(a)()
}}
Compiling this results in a segfault:
```
0. Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -interpret test.swift -enable-objc-interop -stack-check -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -color-diagnostics -module-name test
Apple Swift version 5.2 (swiftlang-1103.0.32.1 clang-1103.0.32.29)
0 swift 0x000000010f6e54ea PrintStackTraceSignalHandler(void*) + 42
1 swift 0x000000010f6e4cc0 SignalHandler(int) + 352
2 libsystem_platform.dylib 0x00007fff6ba155fd _sigtramp + 29
3 libsystem_platform.dylib 0x0000000000800000 _sigtramp + 2497620512
4 swift 0x000000010b8cea8a swift::Lowering::SILGenFunction::emitOpenExistentialExprImpl(swift::OpenExistentialExpr*, llvm::function_ref<void (swift::Expr*)>) + 666
5 swift 0x000000010b8bfc2a swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 38938
6 swift 0x000000010b86df63 (anonymous namespace)::SILGenApply::visitExpr(swift::Expr*) + 51
7 swift 0x000000010b863304 swift::Lowering::SILGenFunction::emitApplyExpr(swift::ApplyExpr*, swift::Lowering::SGFContext) + 196
8 swift 0x000000010b8d0297 swift::Lowering::SILGenFunction::emitIgnoredExpr(swift::Expr*) + 823
9 swift 0x000000010b856a5b swift::ASTVisitor<swift::Lowering::SILGenModule, void, void, void, void, void, void>::visit(swift::Decl*) + 1227
10 swift 0x000000010b8557ac swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*) + 1356
11 swift 0x000000010b85788a swift::SILModule::constructSIL(swift::ModuleDecl*, swift::Lowering::TypeConverter&, swift::SILOptions&, swift::FileUnit*) + 1530
12 swift 0x000000010b4393cb swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 55595
13 swift 0x000000010b3af4d3 main + 1283
14 libdyld.dylib 0x00007fff6b81ccc9 start + 1
15 libdyld.dylib 0x000000000000000b start + 2491298627
[1] 13168 segmentation fault swift test.swift
```
The text was updated successfully, but these errors were encountered:
Attachment: Download
Environment
> swift --version
Apple Swift version 5.2 (swiftlang-1103.0.32.1 clang-1103.0.32.29)
Target: x86_64-apple-darwin19.4.0
Additional Detail from JIRA
md5: bee9a80b85986a4d2ed9df54dfaf1571
duplicates:
Issue Description:
I'm getting a segmentation fault when I try to compile code that includes an instance call using protocol methods (not sure how to properly word this). Consider this example:
{{
import Foundation
protocol SomeProtocol {
func someMethod()
}
class SomeClass: SomeProtocol {
func someMethod() {
print("hello")
}
}
let a = SomeClass()
SomeProtocol.someMethod(a)()
}}
Compiling this results in a segfault:
```
0. Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -interpret test.swift -enable-objc-interop -stack-check -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -color-diagnostics -module-name test
0 swift 0x000000010f6e54ea PrintStackTraceSignalHandler(void*) + 42
1 swift 0x000000010f6e4cc0 SignalHandler(int) + 352
2 libsystem_platform.dylib 0x00007fff6ba155fd _sigtramp + 29
3 libsystem_platform.dylib 0x0000000000800000 _sigtramp + 2497620512
4 swift 0x000000010b8cea8a swift::Lowering::SILGenFunction::emitOpenExistentialExprImpl(swift::OpenExistentialExpr*, llvm::function_ref<void (swift::Expr*)>) + 666
5 swift 0x000000010b8bfc2a swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 38938
6 swift 0x000000010b86df63 (anonymous namespace)::SILGenApply::visitExpr(swift::Expr*) + 51
7 swift 0x000000010b863304 swift::Lowering::SILGenFunction::emitApplyExpr(swift::ApplyExpr*, swift::Lowering::SGFContext) + 196
8 swift 0x000000010b8d0297 swift::Lowering::SILGenFunction::emitIgnoredExpr(swift::Expr*) + 823
9 swift 0x000000010b856a5b swift::ASTVisitor<swift::Lowering::SILGenModule, void, void, void, void, void, void>::visit(swift::Decl*) + 1227
10 swift 0x000000010b8557ac swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*) + 1356
11 swift 0x000000010b85788a swift::SILModule::constructSIL(swift::ModuleDecl*, swift::Lowering::TypeConverter&, swift::SILOptions&, swift::FileUnit*) + 1530
12 swift 0x000000010b4393cb swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 55595
13 swift 0x000000010b3af4d3 main + 1283
14 libdyld.dylib 0x00007fff6b81ccc9 start + 1
15 libdyld.dylib 0x000000000000000b start + 2491298627
[1] 13168 segmentation fault swift test.swift
```
The text was updated successfully, but these errors were encountered: