https://bugs.llvm.org/show_bug.cgi?id=34325
Bug ID: 34325
Summary: Invalid reference to a DIType crashes the verifier
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: DebugInfo
Assignee: dav...@freebsd.org
Reporter: dav...@freebsd.org
CC: apra...@apple.com, dblai...@gmail.com,
llvm-bugs@lists.llvm.org, r...@google.com
@bar = global i64 0, align 8, !dbg !0
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!8}
!0 = !DIGlobalVariableExpression(var: !1)
!1 = !DIGlobalVariable(name: "c", scope: null, isLocal: false, isDefinition:
true, type: !6)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3,
isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, retainedTypes:
!4, globals: !7)
!3 = !DIFile(filename: "a", directory: "")
!4 = !{!5}
!5 = distinct !DICompositeType(tag: DW_TAG_class_type, scope: !6, file: !3,
identifier: "patatino")
!6 = distinct !DISubprogram(name: "b", scope: null, isLocal: false,
isDefinition: true, isOptimized: false, unit: !2)
!7 = !{!0}
!8 = !{i32 2, !"Debug Info Version", i32 3}
$ ./opt pet.ll -S
invalid type ref
!1 = !DIGlobalVariable(name: "c", scope: null, type: !2, isLocal: false,
isDefinition: true)
!2 = distinct !DISubprogram(name: "b", scope: null, isLocal: false,
isDefinition: true, isOptimized: false, unit: !3)
opt: ../include/llvm/IR/DebugInfoMetadata.h:78:
llvm::TypedDINodeRef<T>::TypedDINodeRef(const llvm::Metadata*) [with T =
llvm::DIType]: Assertion `(!MD || isa<T>(MD)) && "Expected valid type ref"'
failed.
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