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| author | Lauro Ramos Venancio <lauro.venancio@gmail.com> | 2008-02-19 00:04:15 +0000 |
|---|---|---|
| committer | Lauro Ramos Venancio <lauro.venancio@gmail.com> | 2008-02-19 00:04:15 +0000 |
| commit | 95050fa665c51a29249725101a476de685f43a11 (patch) | |
| tree | 2271f00ba0da7b3769e7d74648641a65a1e238b7 | |
| parent | 39b4c6c98d391b25c376782cf92346aa88c96f7e (diff) | |
A global without initializer must be emitted as weak.
Fix Olden/bh test.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@47292 91177308-0d34-0410-b5e6-96231b3b80d8
| -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; |