Due to a bug, -Wno-everything works like -Weverything. Fix the bug by having

-Wno-everything remap all warnings to ignored.

We can now use "-Wno-everything -W<warning>" to ignore all warnings except
specific ones.

llvm-svn: 149121

2 files changed, 20 insertions, 0 deletions

diff --git a/clang/lib/Basic/Diagnostic.cpp b/clang/lib/Basic/Diagnostic.cpp
index 67ea056417f..eab79d6442d 100644
--- a/clang/lib/Basic/Diagnostic.cpp
+++ b/clang/lib/Basic/Diagnostic.cpp
@@ -295,6 +295,20 @@ bool DiagnosticsEngine::setDiagnosticGroupErrorAsFatal(StringRef Group,
   return false;
 }
 
+bool DiagnosticsEngine::setMappingToAllDiagnostics(diag::Mapping Map,
+                                                   SourceLocation Loc) {
+  // Get all the diagnostics.
+  llvm::SmallVector<diag::kind, 64> AllDiags;
+  Diags->getAllDiagnostics(AllDiags);
+
+  // Set the mapping.
+  for (unsigned i = 0, e = AllDiags.size(); i != e; ++i)
+    if (Diags->isBuiltinWarningOrExtension(AllDiags[i]))
+      setDiagnosticMapping(AllDiags[i], Map, Loc);
+
+  return false;
+}
+
 void DiagnosticsEngine::Report(const StoredDiagnostic &storedDiag) {
   assert(CurDiagID == ~0U && "Multiple diagnostics in flight at once!");
 
diff --git a/clang/lib/Basic/DiagnosticIDs.cpp b/clang/lib/Basic/DiagnosticIDs.cpp
index b3c4d033c28..9f09f72e868 100644
--- a/clang/lib/Basic/DiagnosticIDs.cpp
+++ b/clang/lib/Basic/DiagnosticIDs.cpp
@@ -682,6 +682,12 @@ bool DiagnosticIDs::getDiagnosticsInGroup(
   return false;
 }
 
+void DiagnosticIDs::getAllDiagnostics(
+                               llvm::SmallVectorImpl<diag::kind> &Diags) const {
+  for (unsigned i = 0; i != StaticDiagInfoSize; ++i)
+    Diags.push_back(StaticDiagInfo[i].DiagID);
+}
+
 StringRef DiagnosticIDs::getNearestWarningOption(StringRef Group) {
   StringRef Best;
   unsigned BestDistance = Group.size() + 1; // Sanity threshold.