Summary: This fixes a bug that's easily encountered in LLDB
(https://llvm.org/bugs/show_bug.cgi?id=22875). The problem here is that we
mangle a name during debug info emission, but never actually emit the actual
Decl, so we run into problems in EmitDeclMetadata (which assumes such a Decl
exists). Fix that by just skipping metadata emissions for mangled names that
don't have associated Decls.
Reviewers: rjmccall
Subscribers: labath, cfe-commits
Differential Revision: http://reviews.llvm.org/D13959
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@252229
91177308-0d34-0410-b5e6-
96231b3b80d8
void CodeGenModule::EmitDeclMetadata() {
llvm::NamedMDNode *GlobalMetadata = nullptr;
- // StaticLocalDeclMap
for (auto &I : MangledDeclNames) {
llvm::GlobalValue *Addr = getModule().getNamedValue(I.second);
- EmitGlobalDeclMetadata(*this, GlobalMetadata, I.first, Addr);
+ // Some mangled names don't necessarily have an associated GlobalValue
+ // in this module, e.g. if we mangled it for DebugInfo.
+ if (Addr)
+ EmitGlobalDeclMetadata(*this, GlobalMetadata, I.first, Addr);
}
}