[AST/index] Introduce an option 'SuppressTemplateArgsInCXXConstructors' in printing policy.

Enable it for USRs and names when indexing.
Forward references can have different template argument names; including them
makes USRs and names unstable, since the name depends on whether we saw a forward reference or not.

llvm-svn: 260866

1 files changed, 1 insertions, 4 deletions

diff --git a/clang/tools/c-index-test/core_main.cpp b/clang/tools/c-index-test/core_main.cpp
index e37b3422ac6..e72b9f93efd 100644
--- a/clang/tools/c-index-test/core_main.cpp
+++ b/clang/tools/c-index-test/core_main.cpp
@@ -156,10 +156,7 @@ static void printSymbolInfo(SymbolInfo SymInfo, raw_ostream &OS) {
 
 static void printSymbolNameAndUSR(const Decl *D, ASTContext &Ctx,
                                   raw_ostream &OS) {
-  if (auto *ND = dyn_cast<NamedDecl>(D)) {
-    PrintingPolicy PrintPolicy(Ctx.getLangOpts());
-    ND->getDeclName().print(OS, PrintPolicy);
-  } else {
+  if (printSymbolName(D, Ctx.getLangOpts(), OS)) {
     OS << "<no-name>";
   }
   OS << " | ";