diff options
| -rw-r--r-- | CodeGen/CodeGenModule.cpp | 3 | ||||
| -rw-r--r-- | test/CodeGen/weak-global.c | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/CodeGen/CodeGenModule.cpp b/CodeGen/CodeGenModule.cpp index ef05586fcc..d68fbe616d 100644 --- a/CodeGen/CodeGenModule.cpp +++ b/CodeGen/CodeGenModule.cpp @@ -244,6 +244,9 @@ void CodeGenModule::EmitGlobalVar(const FileVarDecl *D) { case VarDecl::Register: assert(0 && "Can't have auto or register globals"); case VarDecl::None: + if (!D->getInit()) + GV->setLinkage(llvm::GlobalVariable::WeakLinkage); + break; case VarDecl::Extern: case VarDecl::PrivateExtern: // todo: common diff --git a/test/CodeGen/weak-global.c b/test/CodeGen/weak-global.c new file mode 100644 index 0000000000..86e551c1ea --- /dev/null +++ b/test/CodeGen/weak-global.c @@ -0,0 +1,3 @@ +// RUN: clang -emit-llvm < %s | grep weak + +int i; |