Re: trunk merged into MELT branch after C++ conversion

[Marc Glisse]

On Wed, 29 Aug 2012, Basile Starynkevitch wrote:

I discovered a strange property of C++ regarding symbols. If you just code
  // file foo1.cc
  extern "C" {
    const int twosymb=2;
  };

the resulting foo1.o does not define a twosymb symbol (I expected that it does).
You have to code

  // file foo2.cc
  extern "C" {
    extern const int twosymb;
    const int twosymb=2;
  };

to get a symbol "twosymb" in foo2.o

Yes, that's one of the usual traps about C vs C++. Note that you can write 
everything on the same line...

extern "C" const int twosymb = 2;

--
Marc Glisse