A tentative fix for SF bug #503837 (Roeland Rengelink): type.__module__ problems (again?) This simply initializes the __module__ local in a class statement from the __name__ global. I'm not 100% sure that this is the correct fix, although it usually does the right thing. The problem is that if the class statement executes in a custom namespace, the __name__ global may be taken from __builtins__, in which case it would have the value __builtin__, or it may not exist at all (if the custom namespace also has a custom __builtins__), in which case the class statement will fail. Nevertheless, unless someone finds a better solution, this is a 2.2.1 bugfix too.

/* PD implementation of strerror() for systems that don't have it.
   Author: Guido van Rossum, CWI Amsterdam, Oct. 1990, <guido@cwi.nl>. */

#include <stdio.h>
#include "Python.h"

extern int sys_nerr;
extern char *sys_errlist[];

char *
strerror(int err)
{
	static char buf[20];
	if (err >= 0 && err < sys_nerr)
		return sys_errlist[err];
	PyOS_snprintf(buf, sizeof(buf), "Unknown errno %d", err);
	return buf;
}

#ifdef macintosh
int sys_nerr = 0;
char *sys_errlist[1] = 0;
#endif