[issue6344] mmap.read() crashes when passed a negative argument
Amaury Forgeot d'Arc
report at bugs.python.org
Sun Jun 28 11:47:54 CEST 2009
Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:
> + if (n < 0)
I suggest a comment like:
/* The difference can overflow, only if self->size is greater than
* PY_SSIZE_T_MAX. But then the operation cannot possibly succeed,
* because the mapped area and the returned string each need more
* than half of the addressable memory. So we clip the size, and let
* the code below raise MemoryError.
*/
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