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| author | John McCall <rjmccall@apple.com> | 2011-03-18 02:56:14 +0000 |
|---|---|---|
| committer | John McCall <rjmccall@apple.com> | 2011-03-18 02:56:14 +0000 |
| commit | 32096695c76033a6b0b1747c439f7378a11e8312 (patch) | |
| tree | 8503c570ab9429200c835f847c459782ed7a4912 /lib/Driver/Tools.cpp | |
| parent | b547eebdffb07dbc2a8239ca93b696b051096933 (diff) | |
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/Driver/Tools.cpp')
| -rw-r--r-- | lib/Driver/Tools.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp index 45fdd8be2e..ee4976ee72 100644 --- a/lib/Driver/Tools.cpp +++ b/lib/Driver/Tools.cpp @@ -1138,6 +1138,12 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA, if (getToolChain().getTriple().getOS() != llvm::Triple::Darwin) CmdArgs.push_back("-mconstructor-aliases"); + // Darwin's kernel doesn't support guard variables; just die if we + // try to use them. + if (KernelOrKext && + getToolChain().getTriple().getOS() == llvm::Triple::Darwin) + CmdArgs.push_back("-fforbid-guard-variables"); + if (Args.hasArg(options::OPT_mms_bitfields)) { CmdArgs.push_back("-mms-bitfields"); } |