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Downgrade unimplemented mangling diagnostic from error to note.
This codepath is exercised by MozsearchIndexer.cpp (the searchfox
indexer) when indexing on Windows. We can do without having the
unimplemented bits for now as long the compiler doesn't fail the
diff --git a/clang/lib/AST/ItaniumMangle.cpp b/clang/lib/AST/ItaniumMangle.cpp
index 4420f6a2c1c3..4d9a6434d245 100644
--- a/clang/lib/AST/ItaniumMangle.cpp
+++ b/clang/lib/AST/ItaniumMangle.cpp
@@ -4028,10 +4028,11 @@ recurse:
if (!NullOut) {
// As bad as this diagnostic is, it's better than crashing.
DiagnosticsEngine &Diags = Context.getDiags();
- unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
+ unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Remark,
"cannot yet mangle expression type %0");
Diags.Report(E->getExprLoc(), DiagID)
<< E->getStmtClassName() << E->getSourceRange();
+ Out << "MOZ_WE_HACKED_AROUND_BUG_1418415";