warnings.warn_explicit() did not have the proper TypeErrors in place to prevent bus errors or SystemError being raised. As a side effect of fixing this, a bad DECREF that could be triggered when 'message' and 'category' were both None was fixed. Closes issue 3211. Thanks JP Calderone for the bug report.

/* Return the full version string. */

#include "Python.h"

#include "patchlevel.h"

const char *
Py_GetVersion(void)
{
	static char version[250];
	PyOS_snprintf(version, sizeof(version), "%.80s (%.80s) %.80s", 
		      PY_VERSION, Py_GetBuildInfo(), Py_GetCompiler());
	return version;
}