computation as the overflow behavior of signed integers is undefined.
In practice we require compiling everything with -fwrapv which forces overflow
to be defined as twos compliment but this keeps the code cleaner for checkers
or in the case where someone has compiled it without -fwrapv or their
compiler's equivalent.
Found by Clang trunk's Undefined Behavior Sanitizer (UBSan).
Cleanup only - no functionality or hash values change.
The NULL encoding check in bytes_decode() was unnecessary because this case
is already taken care of by the call to _Py_normalize_encoding() inside
PyUnicode_Decode().
* Remove _PyBytes_FormatLong(): inline it into formatlong()
* the input type is always a long, so remove the code for bool
* don't duplicate the string if the length does not change
* Use PyUnicode_DATA() instead of _PyUnicode_AsString()
* In debug mode, fill the string data with invalid characters
* Simplify also reference counting in PyCodec_BackslashReplaceErrors()
and PyCodec_XMLCharRefReplaceError()
in order to make algorithmic complexity attacks on (e.g.) web apps much more complicated.
The environment variable PYTHONHASHSEED and the new command line flag -R control this
behavior.
to a single #define instead of having several copies in several files.
This excludes the Modules/ tree (datetime and expat both have a copy
for their own purposes with no need for it to be the same).
* Specify the default encoding: write 'utf-8' instead of
sys.getdefaultencoding(), because the default encoding is now constant
* Specify the default errors value
svn+ssh://pythondev@svn.python.org/python/branches/py3k
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r84629 | senthil.kumaran | 2010-09-08 18:20:29 +0530 (Wed, 08 Sep 2010) | 3 lines
Revert the doc change done in r83880. str.replace with negative count value is not a feature.
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svn+ssh://pythondev@svn.python.org/python/branches/py3k
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r84070 | antoine.pitrou | 2010-08-15 19:12:55 +0200 (dim., 15 août 2010) | 5 lines
Fix some compilation warnings under 64-bit Windows (issue #9566).
Some of these are genuine bugs with objects bigger than 2GB, but
my system doesn't allow me to write tests for it.
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r84074 | antoine.pitrou | 2010-08-15 19:41:31 +0200 (dim., 15 août 2010) | 3 lines
Fix (harmless) warning with MSVC.
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