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Assert failure(PID 7660 [0x00001dec], Thread: 8932 [0x22e4]): Assertion failed 'type == lvaTable[lnum].lvType' #8195

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RussKeldorph opened this issue May 23, 2017 · 3 comments
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Assert failure(PID 7660 [0x00001dec], Thread: 8932 [0x22e4]): Assertion failed 'type == lvaTable[lnum].lvType' #8195

RussKeldorph opened this issue May 23, 2017 · 3 comments
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area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI
Milestone
2.1.0

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@RussKeldorph
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New assertion since Friday in several legs, e.g. https://ci.dot.net/job/dotnet_coreclr/job/master/job/jitstress/job/x64_checked_windows_nt_jitstress1/182/

D:\j\workspace\x64_checked_w---02832afb\bin\tests\Windows_NT.x64.Checked\TestWrappers\JIT.Directed\JIT.Directed.XUnitWrapper.cs(21737): error : JIT_Directed._nullabletypes_castclassvaluetype_ro_castclassvaluetype_ro_._nullabletypes_castclassvaluetype_ro_castclassvaluetype_ro_cmd [FAIL] [D:\j\workspace\x64_checked_w---02832afb\tests\runtest.proj]
        
        Assert failure(PID 7660 [0x00001dec], Thread: 8932 [0x22e4]): Assertion failed 'type == lvaTable[lnum].lvType' in 'Helper:Compare(struct,struct):bool' (IL size 8)
        
            File: d:\j\workspace\x64_checked_w---02832afb\src\jit\gentree.cpp Line: 6954
            Image: D:\j\workspace\x64_checked_w---02832afb\bin\tests\Windows_NT.x64.Checked\Tests\Core_Root\CoreRun.exe
        
        
  
  Return code:      1
@RussKeldorph
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@dotnet/jit-contrib

@pgavlin
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pgavlin commented May 23, 2017

As in dotnet/corefx#20025, the culprit here is dotnet/coreclr#10453. @JosephTremoulet, can you take a look?

@pgavlin pgavlin assigned JosephTremoulet and unassigned pgavlin May 23, 2017
@stephentoub
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Note that this is blocking CoreFx taking an updated CoreCLR.

JosephTremoulet referenced this issue in JosephTremoulet/coreclr May 24, 2017
@JosephTremoulet
Weaken type assertion in gtNewLclNode
f0df32a 
Implicit byref parameters originally have struct type in both the lvaTable
and on their appearances in the IR.  In fgRetypeImplicitByRefArgs, the
types in the lvaTable are updated, and subsequently, during global morph,
in fgMorphImplicitByRefArgs, the types of their appearances in the IR are
updated.  Weaken an assertion in lcl var creation to allow the type
disagreement for implicit byref parameter references during global morph.

Fixes #11831.
@msftgits msftgits transferred this issue from dotnet/coreclr Jan 31, 2020
@msftgits msftgits added this to the 2.1.0 milestone Jan 31, 2020
@JosephTremoulet JosephTremoulet mentioned this issue Jan 31, 2020
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@pgavlin @stephentoub @msftgits @JosephTremoulet @RussKeldorph