test/CodeGenCXX/mangle-local-class-names.cpp

// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s

// CHECK:  @_ZZ4FUNCvEN4SSSSC1ERKf
// CHECK: @_ZZ4FUNCvEN4SSSSC2E_0RKf

void FUNC ()
{
  {
    float IVAR1 ;

    struct SSSS 
    {
      float bv;
      SSSS( const float& from): bv(from) { }
    };

    SSSS VAR1(IVAR1);
   }

   {
    float IVAR2 ;

    struct SSSS
    {
     SSSS( const float& from) {}
    };

    SSSS VAR2(IVAR2);
   }
}