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| author | Nick Coghlan <ncoghlan@gmail.com> | 2017-03-08 06:41:01 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-03-08 06:41:01 (GMT) |
| commit | 93602e3af70d3b9f98ae2da654b16b3382b68d50 (patch) | |
| tree | 632030f1074215e980a070e718be27d2096ffe88 /Misc/NEWS | |
| parent | bef209d449afcdc391b108d197a95b15902197d9 (diff) | |
| download | cpython-93602e3af70d3b9f98ae2da654b16b3382b68d50.zip cpython-93602e3af70d3b9f98ae2da654b16b3382b68d50.tar.gz cpython-93602e3af70d3b9f98ae2da654b16b3382b68d50.tar.bz2 | |
[3.5] bpo-29537: Tolerate legacy invalid bytecode (#169)
bpo-27286 fixed a problem where BUILD_MAP_UNPACK_WITH_CALL could
be emitted with an incorrect oparg value, causing the eval loop
to access the wrong stack entry when attempting to read the
function name.
The associated magic number change caused significant problems when
attempting to upgrade to 3.5.3 for anyone that relies on pre-cached
bytecode remaining valid across maintenance releases.
This patch restores the ability to import legacy bytecode generated
by 3.5.0, 3.5.1 or 3.5.2, and modifies the eval loop to
avoid any harmful consequences from the potentially malformed legacy
bytecode.
Original import patch by Petr Viktorin, eval loop patch by Serhiy Storchaka,
and tests and integration by Nick Coghlan.
Diffstat (limited to 'Misc/NEWS')
| -rw-r--r-- | Misc/NEWS | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -10,6 +10,12 @@ Release date: XXXX-XX-XX Core and Builtins ----------------- +- Issue #29537: Restore runtime compatibility with bytecode files generated by + CPython 3.5.0 and 3.5.1, and adjust the eval loop to avoid the problems that + could be caused by the malformed variant of the BUILD_MAP_UNPACK_WITH_CALL + opcode that they may contain. Patch by Petr Viktorin, Serhiy Storchaka, + and Nick Coghlan. + - Issue #28598: Support __rmod__ for subclasses of str being called before str.__mod__. Patch by Martijn Pieters. |