Driver: enable support for -fsanitize=cfi on Windows.
There are known issues, but the current implementation is good enough for
the check-cfi test suite.
Differential Revision: http://reviews.llvm.org/D11030
llvm-svn: 241728
diff --git a/clang/lib/Driver/SanitizerArgs.cpp b/clang/lib/Driver/SanitizerArgs.cpp
index 3043481..d59c85e 100644
--- a/clang/lib/Driver/SanitizerArgs.cpp
+++ b/clang/lib/Driver/SanitizerArgs.cpp
@@ -289,8 +289,12 @@
// toolchain. We don't have a good way to check the latter, so we just
// check if the toolchan supports vptr.
if (~Supported & Vptr) {
- if (SanitizerMask KindsToDiagnose =
- Kinds & ~TrappingKinds & NeedsUbsanCxxRt) {
+ SanitizerMask KindsToDiagnose = Kinds & ~TrappingKinds & NeedsUbsanCxxRt;
+ // The runtime library supports the Microsoft C++ ABI, but only well enough
+ // for CFI. FIXME: Remove this once we support vptr on Windows.
+ if (TC.getTriple().isOSWindows())
+ KindsToDiagnose &= ~CFI;
+ if (KindsToDiagnose) {
SanitizerSet S;
S.Mask = KindsToDiagnose;
D.Diag(diag::err_drv_unsupported_opt_for_target)