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author | John McCall <rjmccall@apple.com> | 2011-03-18 02:56:14 +0000 |
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committer | John McCall <rjmccall@apple.com> | 2011-03-18 02:56:14 +0000 |
commit | 32096695c76033a6b0b1747c439f7378a11e8312 (patch) | |
tree | 8503c570ab9429200c835f847c459782ed7a4912 /lib/CodeGen/CGDeclCXX.cpp | |
parent | b547eebdffb07dbc2a8239ca93b696b051096933 (diff) | |
download | clang-32096695c76033a6b0b1747c439f7378a11e8312.tar.gz |
The Darwin kernel does not provide useful guard variable support.
Issue this as an IR-gen error; it's not really worthwhile doing this
"right", i.e. in Sema, because IR gen knows a lot of tricks beyond
what the constant evaluator knows.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127854 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CGDeclCXX.cpp')
-rw-r--r-- | lib/CodeGen/CGDeclCXX.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/CodeGen/CGDeclCXX.cpp b/lib/CodeGen/CGDeclCXX.cpp index 6635af8893..ed25b6db38 100644 --- a/lib/CodeGen/CGDeclCXX.cpp +++ b/lib/CodeGen/CGDeclCXX.cpp @@ -149,6 +149,14 @@ CodeGenFunction::EmitCXXGlobalDtorRegistration(llvm::Constant *DtorFn, void CodeGenFunction::EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr) { + // If we've been asked to forbid guard variables, emit an error now. + // This diagnostic is hard-coded for Darwin's use case; we can find + // better phrasing if someone else needs it. + if (CGM.getCodeGenOpts().ForbidGuardVariables) + CGM.Error(D.getLocation(), + "this initialization requires a guard variable, which " + "the kernel does not support"); + CGM.getCXXABI().EmitGuardedInit(*this, D, DeclPtr); } |