AST: Implement proposal for dependent elaborated type specifiers
cxx-abi-dev came up with a way to disambiguate between different
keywords used in elaborated type specifiers.
This resolves certain collisions during mangling.
llvm-svn: 205943
diff --git a/clang/lib/AST/ItaniumMangle.cpp b/clang/lib/AST/ItaniumMangle.cpp
index 27ba2be..21548a0 100644
--- a/clang/lib/AST/ItaniumMangle.cpp
+++ b/clang/lib/AST/ItaniumMangle.cpp
@@ -2361,8 +2361,35 @@
void CXXNameMangler::mangleType(const DependentNameType *T) {
// Typename types are always nested
Out << 'N';
+ // Proposal by cxx-abi-dev, 2014-03-26
+ // <class-enum-type> ::= <name> # non-dependent or dependent type name or
+ // # dependent elaborated type specifier using
+ // # ‘typename'
+ // ::= Ts <name> # dependent elaborated type specifier using
+ // # ‘struct’ or ‘class'
+ // ::= Tu <name> # dependent elaborated type specifier using
+ // # ‘union'
+ // ::= Te <name> # dependent elaborated type specifier using
+ // # ‘enum’
+ switch (T->getKeyword()) {
+ case ETK_Typename:
+ break;
+ case ETK_Struct:
+ case ETK_Class:
+ case ETK_Interface:
+ Out << "Ts";
+ break;
+ case ETK_Union:
+ Out << "Tu";
+ break;
+ case ETK_Enum:
+ Out << "Te";
+ break;
+ default:
+ llvm_unreachable("unexpected keyword for dependent type name");
+ }
manglePrefix(T->getQualifier());
- mangleSourceName(T->getIdentifier());
+ mangleSourceName(T->getIdentifier());
Out << 'E';
}