[cfe-dev] clang++ and g++ difference. Who is right ?

[Jean-Daniel Dupas]

Sorry for the previous incomplete post,

I know there is come C++ expert around, so maybe someone may tell me who is right and who is wrong compiling the following code:


---------------- extern.cpp ---------------
#include <stdio.h>

namespace lldb_private { const char *GetVersion(); }

const char * lldb_private::GetVersion() {
  extern const double LLDBVersionNumber;
  static char g_version_string[32];
  if (g_version_string[0] == '\0')
    ::snprintf (g_version_string, sizeof(g_version_string), "LLDB-%g", LLDBVersionNumber);
    
		return g_version_string;
}
-------------------------------------------

clang++ mangle the external reference to LLDBVersionNumber using c++ rules => __ZN12lldb_private17LLDBVersionNumberE
but g++ uses C rules  => _LLDBVersionNumber

As a side note, if you move the GetVersion() implementation inside the namespace body, both compilers use C++ mangling.


-- Jean-Daniel




-- Jean-Daniel