Added checks for integer overflows, contributed by Google. Some are
only available if asserts are left in the code, in cases where they
can't be triggered from Python code.
2.x signed value. Also, don't waste space on a table full of unsigned longs
when all it needs are unsigned ints (incase anyone builds this without zlib on
a 64-bit unix for some strange reason).
tested by forcing it to compile this version on both 32-bit and 64-bit linux.
with ASCII value less than 32. Also, it correctly quotes dots only if
they occur on a single line, as opposed to the previous behavior of
quoting dots if they are the second character of any line.
In C++, it's an error to pass a string literal to a char* function
without a const_cast(). Rather than require every C++ extension
module to put a cast around string literals, fix the API to state the
const-ness.
I focused on parts of the API where people usually pass literals:
PyArg_ParseTuple() and friends, Py_BuildValue(), PyMethodDef, the type
slots, etc. Predictably, there were a large set of functions that
needed to be fixed as a result of these changes. The most pervasive
change was to make the keyword args list passed to
PyArg_ParseTupleAndKewords() to be a const char *kwlist[].
One cast was required as a result of the changes: A type object
mallocs the memory for its tp_doc slot and later frees it.
PyTypeObject says that tp_doc is const char *; but if the type was
created by type_new(), we know it is safe to cast to char *.
