RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-12-02 08:26:29 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[Verifier] Diagnose invalid DIType references instead of crashing.

Browse Source 
Fixes PR34325.

llvm-svn: 311805
This commit is contained in:
Davide Italiano 2017-08-25 22:08:15 +00:00
parent 9dc7891598
commit 77dc476163
2 changed files with 19 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
lib/IR/Verifier.cpp
View File

@ -1154,6 +1154,7 @@ void Verifier::visitDIGlobalVariable(const DIGlobalVariable &N) {
AssertDI(N.getTag() == dwarf::DW_TAG_variable, "invalid tag", &N);
AssertDI(!N.getName().empty(), "missing global variable name", &N);
AssertDI(isType(N.getRawType()), "invalid type ref", &N, N.getRawType());
AssertDI(N.getType(), "missing global variable type", &N);
if (auto *Member = N.getRawStaticDataMemberDeclaration()) {
AssertDI(isa<DIDerivedType>(Member),

18
test/Verifier/pr34325.ll Normal file
View File

@ -0,0 +1,18 @@
; RUN: not opt -verify %s 2>&1 | FileCheck %s
; CHECK: invalid type ref
@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}