[issue9058] PyUnicodeDecodeError_Create asserts that various arguments are less than INT_MAX
Dave Malcolm
report at bugs.python.org
Tue Jun 22 21:06:11 CEST 2010
Dave Malcolm <dmalcolm at redhat.com> added the comment:
>>> Actually, you should be able to just remove the asserts.
Aha, thanks!
Yes: #define PY_SSIZE_T_CLEAN is defined at the top of Objects/exceptions.c, so yes, Py_VaBuildValue is redirected to _Py_VaBuildValue_SizeT, so that
PyEval_CallFunction
calls:
Py_VaBuildValue(format, vargs)
which is preprocessed to:
_Py_VaBuildValue_SizeT
which calls:
return va_build_value(format, va, FLAG_SIZE_T);
which means that "s#" is processed with flags==FLAG_SIZE_T, and thus as "Py_ssize_t" within do_mkvalue:
if (flags & FLAG_SIZE_T)
n = va_arg(*p_va, Py_ssize_t);
else
n = va_arg(*p_va, int);
So, yes, it does look like the three assert lines can simply be removed.
----------
Added file: http://bugs.python.org/file17747/remove-PyUnicodeDecodeError_Create-assertions-issue9058-v2.patch
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