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[SR-2674] Compiler Bug with Generic Property #45279

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swift-ci opened this issue Sep 17, 2016 · 4 comments
Closed

[SR-2674] Compiler Bug with Generic Property #45279

swift-ci opened this issue Sep 17, 2016 · 4 comments
Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software regression swift 3.0

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@swift-ci
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Previous ID SR-2674
Radar None
Original Reporter DanielT1263 (JIRA User)
Type Bug
Status Resolved
Resolution Done

Attachment: Download

Environment

OSX X El Capitan v 10.11.6
Xcode v 8.0 (8A218a)

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, 3.0Regression, CompilerCrash
Assignee None
Priority Medium

md5: b3936f20a14fd6e3773ba65234acbe43

Issue Description:

The code attached compiles fine with Xcode 7/Swift 2.2 but it breaks the complier in Xcode 8/Swift 3.

To reproduce simply drag the attached file into any project and attempt to compile. I marked the offending line with a comment. If that line is removed, then the code will compile.

Error Message:
Call parameter type does not match function signature!
%39 = bitcast i8* %38 to %swift.opaque*, 224
%swift.type* call void %48(%swift.opaque* noalias nocapture %0, %swift.opaque* %39, %swift.type* %8, i8** noalias nocapture %11, %swift.type* %13, i8** %49), 224
LLVM ERROR: Broken function found, compilation aborted!
@belkadan
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   Assertion failed: ((i >= FTy->getNumParams() || FTy->getParamType(i) == Args[i]->getType()) && "Calling a function with a bad signature!"), function init, file /Volumes/Data/swift-public/llvm/lib/IR/Instructions.cpp, line 263.

@rjmccall, look familiar?

@belkadan
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Or @jckarter?

@huonw
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Mannequin

huonw mannequin commented Oct 11, 2016

Based on the LLVM assert, creduce thinks this is a minimal reproduction:

protocol Producer { func start<L>(listener : L) }
class T {
  init<P : Producer>(producer : P) { _start = producer.start }
  var _start : ()->Void
}

@slavapestov
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No longer crashes on Swift 3 or master.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis AnthonyLatsis added the crash Bug: A crash, i.e., an abnormal termination of software label Dec 12, 2022
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Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software regression swift 3.0
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@slavapestov @belkadan @swift-ci @AnthonyLatsis