mirror of https://github.com/python/cpython
d808279be3
If a length-1 Unicode string was in the freelist and it was uninitialized or pointed to a very large (magnitude) negative number, the check unicode_latin1[unicode->str[0]] == unicode could cause a segmentation violation, e.g. unicode->str[0] is 0xcbcbcbcb. Fix this in two ways: 1. Change guard befor unicode_latin1[] to test against 256U. If I understand correctly, the unsigned long used to store UCS4 on my box was getting converted to a signed long to compare with the signed constant 256. 2. Change _PyUnicode_New() to make sure the first element of str is always initialized to zero. There are several places in the code where the caller can exit with an error before initializing any of str, which would leave junk in str[0]. Also, silence a compiler warning on pointer vs. int arithmetic. Bug fix candidate. |
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| .. | ||
| RPM | ||
| ACKS | ||
| AIX-NOTES | ||
| BeOS-NOTES | ||
| BeOS-setup.py | ||
| HISTORY | ||
| NEWS | ||
| NEWS.help | ||
| PURIFY.README | ||
| Porting | ||
| README | ||
| RFD | ||
| SpecialBuilds.txt | ||
| cheatsheet | ||
| find_recursionlimit.py | ||
| gdbinit | ||
| indent.pro | ||
| pymemcompat.h | ||
| python-mode.el | ||
| python.man | ||
| setuid-prog.c | ||
| vgrindefs | ||
README
Python Misc subdirectory ======================== This directory contains files that wouldn't fit in elsewhere. Some documents are only of historic importance. Files found here ---------------- ACKS Acknowledgements AIX-NOTES Notes for building Python on AIX BeOS-NOTES Notes for building on BeOS BeOS-setup.py setup.py replacement for BeOS, see BeOS-NOTES cheatsheet Quick summary of Python by Ken Manheimer find_recursionlimit.py Script to find a value for sys.maxrecursionlimit gdbinit Handy stuff to put in your .gdbinit file, if you use gdb HISTORY News from previous releases -- oldest last HPUX-NOTES Notes about dynamic loading under HP-UX indent.pro GNU indent profile approximating my C style NEWS News for this release (for some meaning of "this") Porting Mini-FAQ on porting to new platforms PURIFY.README Information for Purify users pymemcompat.h Memory interface compatibility file. python.man UNIX man page for the python interpreter python-mode.el Emacs mode for editing Python programs README The file you're reading now RFD Request For Discussion about a Python newsgroup RPM (Old) tools to build RPMs SpecialBuilds.txt Describes extra symbols you can set for debug builds setuid-prog.c C helper program for set-uid Python scripts vgrindefs Python configuration for vgrind (a generic pretty printer)