test/Driver/warning-options.cpp: Mark as XFAIL:cygming. -pedantic is passed with gcc-as driver. PR12920
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158423 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Driver/warning-options.cpp b/test/Driver/warning-options.cpp
index 02b3e1c..3436161 100644
--- a/test/Driver/warning-options.cpp
+++ b/test/Driver/warning-options.cpp
@@ -13,3 +13,6 @@
// NO_PEDANTIC-NOT: -pedantic
// RUN: %clang -### -pedantic -pedantic -no-pedantic -pedantic %s 2>&1 | FileCheck -check-prefix=PEDANTIC %s
// PEDANTIC: -pedantic
+
+// PR12920: They use gcc driver. Clang tends to pass -pedantic to gcc-as and gcc-ld.
+// XFAIL: cygwin,mingw32