Message 57938 - Python tracker
I don't have any 64bit machine to test with, but it seems to me that there is a problem in the function getargs.c::convertsimple(): the t# and w# formats use the buffer interface, but the code uses an int to store its length! Look for the variables declared as "int count;". I suggest to replace it with a Py_ssize_t in both places. Shouldn't the compiler emit some warning in this case?