commit 9bd6b77ac66fddadc50ca99ca327f1b7f9b0d6e4
author Richard Smith <richard@metafoo.co.uk> Tue Apr 14 23:35:35 2020 -0700
committer Richard Smith <richard@metafoo.co.uk> Wed Apr 15 00:07:12 2020 -0700
tree b478b826c42a7209ca7d2adcd8a97bfb00f575ec
parent b09ee8882010ff2a7d55e30c46c19533d0ab562d

Don't print `&` as part of reference template arguments.

In passing, also generalize the mechanism used to allow Decl's printName
functions to override qualified name printing.

clang/lib/AST/Decl.cpp

diff --git a/clang/lib/AST/Decl.cpp b/clang/lib/AST/Decl.cpp
index 1eb8547..8d98e1f 100644
--- a/clang/lib/AST/Decl.cpp
+++ b/clang/lib/AST/Decl.cpp
@@ -1542,10 +1542,19 @@
     return;
   }
   printNestedNameSpecifier(OS, P);
-  if (getDeclName() || isa<DecompositionDecl>(this))
+  if (getDeclName())
     OS << *this;
-  else
-    OS << "(anonymous)";
+  else {
+    // Give the printName override a chance to pick a different name before we
+    // fall back to "(anonymous)".
+    SmallString<64> NameBuffer;
+    llvm::raw_svector_ostream NameOS(NameBuffer);
+    printName(NameOS);
+    if (NameBuffer.empty())
+      OS << "(anonymous)";
+    else
+      OS << NameBuffer;
+  }
 }
 
 void NamedDecl::printNestedNameSpecifier(raw_ostream &OS) const {