Add support for -Wwrite-strings.  Patch by Mike M!  Fixes PR 4804.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98541 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Driver/CC1Options.td b/include/clang/Driver/CC1Options.td
index 7cd26ef..1ecd8d6 100644
--- a/include/clang/Driver/CC1Options.td
+++ b/include/clang/Driver/CC1Options.td
@@ -197,6 +197,8 @@
   HelpText<"Use colors in diagnostics">;
 def Wno_rewrite_macros : Flag<"-Wno-rewrite-macros">,
   HelpText<"Silence ObjC rewriting warnings">;
+def Wwrite_strings : Flag<"-Wwrite-strings">,
+  HelpText<"Add const qualifier to string literals">;
 def verify : Flag<"-verify">,
   HelpText<"Verify emitted diagnostics and warnings">;