Add -Wbuiltin-macro-redefined/-Wno-builtin-macro-redefined.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83017 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/clang/Basic/DiagnosticGroups.td b/include/clang/Basic/DiagnosticGroups.td
index 63afc632859c2ff5731d2a99ee7aef326bbb0cb3..c34bdc111c90fa65f0d444647190f90fc1b9b9de 100644 (file)
--- a/include/clang/Basic/DiagnosticGroups.td
+++ b/include/clang/Basic/DiagnosticGroups.td
@@ -70,6 +70,9 @@ def : DiagGroup<"shadow">;
 def : DiagGroup<"shorten-64-to-32">;
 def : DiagGroup<"sign-compare">;
 
+// Preprocessor warnings.
+def : DiagGroup<"builtin-macro-redefined">;
+
 // Just silence warnings about common forms of -Wstrict-aliasing for now.
 def : DiagGroup<"strict-aliasing=0">;
 def : DiagGroup<"strict-aliasing=1">;

diff --git a/include/clang/Basic/DiagnosticLexKinds.td b/include/clang/Basic/DiagnosticLexKinds.td
index 9eda7bd2f31b7cd64abfdcc706bbdf057105e627..3f132c0dabfa2c47faae325a2f3b49da768ce8f6 100644 (file)
--- a/include/clang/Basic/DiagnosticLexKinds.td
+++ b/include/clang/Basic/DiagnosticLexKinds.td
@@ -112,7 +112,8 @@ def pp_poisoning_existing_macro : Warning<"poisoning existing macro">;
 def pp_out_of_date_dependency : Warning<
   "current file is older than dependency %0">;
 def pp_undef_builtin_macro : Warning<"undefining builtin macro">;
-def pp_redef_builtin_macro : Warning<"redefining builtin macro">;
+def pp_redef_builtin_macro : Warning<"redefining builtin macro">,
+  InGroup<DiagGroup<"builtin-macro-redefined">>;
 def pp_macro_not_used : Warning<"macro is not used">, DefaultIgnore,
   InGroup<DiagGroup<"unused-macros">>;
 def warn_pp_undef_identifier : Warning<