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* [Bug c++/57528] New: Missed warning for putting reference to temporary in class member
@ 2013-06-04 18:07 jewillco at osl dot iu.edu
2013-06-05 0:10 ` [Bug c++/57528] " redi at gcc dot gnu.org
2013-06-05 18:26 ` paolo.carlini at oracle dot com
0 siblings, 2 replies; 3+ messages in thread
From: jewillco at osl dot iu.edu @ 2013-06-04 18:07 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57528
Bug ID: 57528
Summary: Missed warning for putting reference to temporary in
class member
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jewillco at osl dot iu.edu
It would be nice to have a warning on code such as:
struct b {
const int& r;
b(int r): r(r) {}
};
that is almost certainly unintended since it always binds a reference to a
temporary in a case where the reference outlives the temporary. "g++ (GCC)
4.9.0 20130519 (experimental)" does not warn on this code with -Wall -Wextra,
whether with -O2 or without. Uses of the struct b (including with a literal
number as constructor argument) do not produce warnings either.
^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug c++/57528] Missed warning for putting reference to temporary in class member 2013-06-04 18:07 [Bug c++/57528] New: Missed warning for putting reference to temporary in class member jewillco at osl dot iu.edu @ 2013-06-05 0:10 ` redi at gcc dot gnu.org 2013-06-05 18:26 ` paolo.carlini at oracle dot com 1 sibling, 0 replies; 3+ messages in thread From: redi at gcc dot gnu.org @ 2013-06-05 0:10 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57528 Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |diagnostic --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- This is the same as the example in Bug 49974 comment 2 and Bug 986 Comment 31 ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/57528] Missed warning for putting reference to temporary in class member 2013-06-04 18:07 [Bug c++/57528] New: Missed warning for putting reference to temporary in class member jewillco at osl dot iu.edu 2013-06-05 0:10 ` [Bug c++/57528] " redi at gcc dot gnu.org @ 2013-06-05 18:26 ` paolo.carlini at oracle dot com 1 sibling, 0 replies; 3+ messages in thread From: paolo.carlini at oracle dot com @ 2013-06-05 18:26 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57528 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE --- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> --- Let's resolve as Dup. *** This bug has been marked as a duplicate of bug 49974 *** ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2013-06-05 18:26 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-06-04 18:07 [Bug c++/57528] New: Missed warning for putting reference to temporary in class member jewillco at osl dot iu.edu 2013-06-05 0:10 ` [Bug c++/57528] " redi at gcc dot gnu.org 2013-06-05 18:26 ` paolo.carlini at oracle dot com
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