[SR-3541] Crash when calling method on generic base class with concrete subclass #46129
Comments
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Based on an automatic reduction by creduce, this seems to be caused by the tuple arguments: class StreamingC<valueType> {
func write(value: valueType) {}
}
class TupleStreamer : StreamingC<(Int, Int)> {
func write() {
write(value: (0, 0))
}
override func write(value: (Int, Int)) {}
}Assertion failed: (count <= Params.size()), function claimParams, file /Users/huon/swift6/swift/lib/SILGen/SILGenApply.cpp, line 3982.Changing either or both of the `Int`s to `()` results in two exciting new assertions too: # (Int, ()) and ((), Int)
Assertion failed: (!destType || destType.getObjectType() == SGF.SGM.Types.getLoweredType(origFormalType, substFormalType).getObjectType()), function materialize, file /Users/huon/swift6/swift/lib/SILGen/ArgumentSource.cpp, line 163.# ((), ())
Assertion failed: (Params.empty() && "didn't consume all the parameters"), function ~ParamLowering, file /Users/huon/swift6/swift/lib/SILGen/SILGenApply.cpp, line 4007. |
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This crashes because when it's looking at the overridden method, and when it's looking at the same method if it isn't an override. But in both cases, |
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Please don't mark bugs as resolved until the PR is merged! |
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Do you think there's any reason the PR won't get merged? |
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To me, "resolved" is the state where the originator can verify your fix. That's not really true (without undue burden) until the corresponding PR is merged. |
AnthonyLatsis
added
the
crash
Environment
Apple Swift version 2.2 (swiftlang-703.0.18.8 clang-703.0.31)
Target: x86_64-apple-macosx10.9
System Version: OS X 10.11.6 (15G1212)
Kernel Version: Darwin 15.6.0
Boot Mode: Normal
Secure Virtual Memory: Enabled
System Integrity Protection: Enabled
Additional Detail from JIRA
md5: c2f1fd613921369a915bb796c648e430
Issue Description:
Here is the compiler output:
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