diff options
Diffstat (limited to 'clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp')
| -rw-r--r-- | clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp b/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp index cd17832..2178ec2 100644 --- a/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp +++ b/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp @@ -219,7 +219,11 @@ public: M->setTargetTriple(Ctx.getTargetInfo().getTriple().getTriple()); M->setDataLayout(Ctx.getTargetInfo().getDataLayoutString()); - Builder->getModuleDebugInfo()->setDwoId(Buffer->Signature); + + // PCH files don't have a signature field in the control block, + // but LLVM detects DWO CUs by looking for a non-zero DWO id. + uint64_t Signature = Buffer->Signature ? Buffer->Signature : ~1U; + Builder->getModuleDebugInfo()->setDwoId(Signature); // Finalize the Builder. if (Builder) |