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* [Bug libstdc++/112569] New: libstdc++-v3/include/ranges:1456: missing check for self-assignment
@ 2023-11-16 13:03 terra at gnome dot org
2023-11-23 13:56 ` [Bug libstdc++/112569] " rs2740 at gmail dot com
0 siblings, 1 reply; 2+ messages in thread
From: terra at gnome dot org @ 2023-11-16 13:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112569
Bug ID: 112569
Summary: libstdc++-v3/include/ranges:1456: missing check for
self-assignment
Product: gcc
Version: 13.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: terra at gnome dot org
Target Milestone: ---
The move assignment operator for _CachedPosition does not check for
self-assignment and it is not obviously safe for other reasons.
Self-assignment will overwrite _M_offset with the value -1.
It's an internal class. I have no idea if this has any externally visible
consequences.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug libstdc++/112569] libstdc++-v3/include/ranges:1456: missing check for self-assignment
2023-11-16 13:03 [Bug libstdc++/112569] New: libstdc++-v3/include/ranges:1456: missing check for self-assignment terra at gnome dot org
@ 2023-11-23 13:56 ` rs2740 at gmail dot com
0 siblings, 0 replies; 2+ messages in thread
From: rs2740 at gmail dot com @ 2023-11-23 13:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112569
TC <rs2740 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rs2740 at gmail dot com
--- Comment #1 from TC <rs2740 at gmail dot com> ---
This is exactly as it should be. There's no guarantee that self-move-assignment
on the associated range is a no-op, so the cache must be invalidated.
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2023-11-23 13:56 UTC | newest]
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2023-11-16 13:03 [Bug libstdc++/112569] New: libstdc++-v3/include/ranges:1456: missing check for self-assignment terra at gnome dot org
2023-11-23 13:56 ` [Bug libstdc++/112569] " rs2740 at gmail dot com
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