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* [Bug c++/61674] New: The destructor of a simple class is removed by optimization
@ 2014-07-02 14:58 A.Finch at lancaster dot ac.uk
2014-07-02 15:03 ` [Bug c++/61674] " A.Finch at lancaster dot ac.uk
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: A.Finch at lancaster dot ac.uk @ 2014-07-02 14:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61674
Bug ID: 61674
Summary: The destructor of a simple class is removed by
optimization
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: A.Finch at lancaster dot ac.uk
Created attachment 33046
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33046&action=edit
Log of compilation
In a simple class (LocalGeometryLock) designed to provide a lock the destructor
appears to be removed by optimization. This can be prevented by either adding a
cout to the destructor or adding __attribute__((optimize("-O0"))) after the
destructor definition. This occurs in the code for a large project which it is
not practical to send. Unfortunately it has not proved possible to reproduce
the issue with a simple test program.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug c++/61674] The destructor of a simple class is removed by optimization 2014-07-02 14:58 [Bug c++/61674] New: The destructor of a simple class is removed by optimization A.Finch at lancaster dot ac.uk @ 2014-07-02 15:03 ` A.Finch at lancaster dot ac.uk 2014-07-02 15:07 ` A.Finch at lancaster dot ac.uk ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: A.Finch at lancaster dot ac.uk @ 2014-07-02 15:03 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61674 --- Comment #1 from Alex Finch <A.Finch at lancaster dot ac.uk> --- Created attachment 33047 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33047&action=edit .ii file zipped to get under 1000 byte limit added .ii file ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/61674] The destructor of a simple class is removed by optimization 2014-07-02 14:58 [Bug c++/61674] New: The destructor of a simple class is removed by optimization A.Finch at lancaster dot ac.uk 2014-07-02 15:03 ` [Bug c++/61674] " A.Finch at lancaster dot ac.uk @ 2014-07-02 15:07 ` A.Finch at lancaster dot ac.uk 2014-07-02 15:07 ` A.Finch at lancaster dot ac.uk ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: A.Finch at lancaster dot ac.uk @ 2014-07-02 15:07 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61674 --- Comment #2 from Alex Finch <A.Finch at lancaster dot ac.uk> --- Created attachment 33048 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33048&action=edit source file source file attached ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/61674] The destructor of a simple class is removed by optimization 2014-07-02 14:58 [Bug c++/61674] New: The destructor of a simple class is removed by optimization A.Finch at lancaster dot ac.uk 2014-07-02 15:03 ` [Bug c++/61674] " A.Finch at lancaster dot ac.uk 2014-07-02 15:07 ` A.Finch at lancaster dot ac.uk @ 2014-07-02 15:07 ` A.Finch at lancaster dot ac.uk 2014-07-02 15:09 ` A.Finch at lancaster dot ac.uk 2014-07-02 16:54 ` pangbw at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: A.Finch at lancaster dot ac.uk @ 2014-07-02 15:07 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61674 --- Comment #3 from Alex Finch <A.Finch at lancaster dot ac.uk> --- Created attachment 33049 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33049&action=edit header file header file attached ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/61674] The destructor of a simple class is removed by optimization 2014-07-02 14:58 [Bug c++/61674] New: The destructor of a simple class is removed by optimization A.Finch at lancaster dot ac.uk ` (2 preceding siblings ...) 2014-07-02 15:07 ` A.Finch at lancaster dot ac.uk @ 2014-07-02 15:09 ` A.Finch at lancaster dot ac.uk 2014-07-02 16:54 ` pangbw at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: A.Finch at lancaster dot ac.uk @ 2014-07-02 15:09 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61674 --- Comment #4 from Alex Finch <A.Finch at lancaster dot ac.uk> --- I should add that this problem was not observed in gcc 4.4.7 and earlier. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/61674] The destructor of a simple class is removed by optimization 2014-07-02 14:58 [Bug c++/61674] New: The destructor of a simple class is removed by optimization A.Finch at lancaster dot ac.uk ` (3 preceding siblings ...) 2014-07-02 15:09 ` A.Finch at lancaster dot ac.uk @ 2014-07-02 16:54 ` pangbw at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: pangbw at gmail dot com @ 2014-07-02 16:54 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61674 baoshan <pangbw at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pangbw at gmail dot com --- Comment #5 from baoshan <pangbw at gmail dot com> --- (In reply to Alex Finch from comment #4) > I should add that this problem was not observed in gcc 4.4.7 and earlier. Can you explain why you think it is a bug? Sometimes the code has been optimized away just because it is not useful for the program running correctly. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-07-02 16:54 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2014-07-02 14:58 [Bug c++/61674] New: The destructor of a simple class is removed by optimization A.Finch at lancaster dot ac.uk 2014-07-02 15:03 ` [Bug c++/61674] " A.Finch at lancaster dot ac.uk 2014-07-02 15:07 ` A.Finch at lancaster dot ac.uk 2014-07-02 15:07 ` A.Finch at lancaster dot ac.uk 2014-07-02 15:09 ` A.Finch at lancaster dot ac.uk 2014-07-02 16:54 ` pangbw at gmail dot com
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