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Verifier: verify that a DILocation's scope is a DILocalScope. 

This fixes an assertion failure(!) in the Verifier.

rdar://problem/43687474

llvm-svn: 340653
This commit is contained in:
Adrian Prantl 2018-08-24 21:01:58 +00:00
parent 6328ccc14c
commit 3807217d02
2 changed files with 28 additions and 0 deletions
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4
llvm/lib/IR/Verifier.cpp
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@ -2264,6 +2264,10 @@ void Verifier::visitFunction(const Function &F) {
if (!Seen.insert(DL).second)
continue;
Metadata *Parent = DL->getRawScope();
AssertDI(Parent && isa<DILocalScope>(Parent),
"DILocation's scope must be a DILocalScope", N, &F, &I, DL,
Parent);
DILocalScope *Scope = DL->getInlinedAtScope();
if (Scope && !Seen.insert(Scope).second)
continue;

24
llvm/test/Verifier/DILocation-scope.ll Normal file
View File

@ -0,0 +1,24 @@
; RUN: llvm-as -disable-output %s -o - 2>&1 | FileCheck %s
source_filename = "t.c"
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.13.0"
define void @f() !dbg !4 {
entry:
; CHECK: scope must be a DILocalScope
; CHECK: DILocation
ret void, !dbg !6
}
; CHECK: warning: ignoring invalid debug info
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2, !3}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, emissionKind: FullDebug)
!1 = !DIFile(filename: "t.c", directory: "/tmp")
!2 = !{i32 2, !"Dwarf Version", i32 4}
!3 = !{i32 2, !"Debug Info Version", i32 3}
!4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 2, type: !5, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, unit: !0)
!5 = !DISubroutineType(types: !{})
!6 = !DILocation(line: 2, scope: !1)