public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug libstdc++/65840] New: type of result of at least some libstdc++ xmethods is different than real operator @ 2015-04-21 22:40 dje at google dot com 2015-04-21 22:57 ` [Bug libstdc++/65840] " pinskia at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: dje at google dot com @ 2015-04-21 22:40 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65840 Bug ID: 65840 Summary: type of result of at least some libstdc++ xmethods is different than real operator Product: gcc Version: 4.9.1 Status: UNCONFIRMED Severity: minor Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: dje at google dot com Using libstdc++-v3/testsuite/libstdc++-xmethods/unique_ptr.cc as a testcase, and modifying it to ensure the * operator is compiled in: --- gcc-unique_ptr.cc.~1~ 2015-04-21 15:17:37.863001716 -0700 +++ gcc-unique_ptr.cc 2015-04-21 15:18:14.666458223 -0700 @@ -30,7 +30,7 @@ main () // { dg-final { note-test *p 10 } } // { dg-final { regexp-test p.get() 0x.* } } - return 0; // Mark SPOT + return *p; // Mark SPOT } // { dg-final { gdb-test SPOT {} 1 } } bash$ gdb a.out (gdb) start (gdb) n # keep next'ing until we get here: 33 return *p; // Mark SPOT (gdb) p *p $1 = 10 (gdb) disable xm (gdb) p *p $2 = (int &) @0x403010: 10 (gdb) pt $1 type = int (gdb) pt $2 type = int & Note the difference in type of the result of the xmethod vs the real * operator. IWBN if they had the same type. If this requires additions to gdb we can do that. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/65840] type of result of at least some libstdc++ xmethods is different than real operator 2015-04-21 22:40 [Bug libstdc++/65840] New: type of result of at least some libstdc++ xmethods is different than real operator dje at google dot com @ 2015-04-21 22:57 ` pinskia at gcc dot gnu.org 2015-04-21 23:14 ` dje at google dot com 2015-04-21 23:38 ` redi at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2015-04-21 22:57 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65840 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Well does this matter in practice? In does set "*p = 1" work when xm is disable and when it is enable? If the behavior is the same then it does not matter in practice. Or does p &*p work both with and without xmethod? ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/65840] type of result of at least some libstdc++ xmethods is different than real operator 2015-04-21 22:40 [Bug libstdc++/65840] New: type of result of at least some libstdc++ xmethods is different than real operator dje at google dot com 2015-04-21 22:57 ` [Bug libstdc++/65840] " pinskia at gcc dot gnu.org @ 2015-04-21 23:14 ` dje at google dot com 2015-04-21 23:38 ` redi at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: dje at google dot com @ 2015-04-21 23:14 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65840 --- Comment #2 from Doug Evans <dje at google dot com> --- I think it should be more than just a matter of working in practice. A user may get confused by the difference in the type and wonder if time needs to be spent investigating the difference. Tools shouldn't do this to users. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/65840] type of result of at least some libstdc++ xmethods is different than real operator 2015-04-21 22:40 [Bug libstdc++/65840] New: type of result of at least some libstdc++ xmethods is different than real operator dje at google dot com 2015-04-21 22:57 ` [Bug libstdc++/65840] " pinskia at gcc dot gnu.org 2015-04-21 23:14 ` dje at google dot com @ 2015-04-21 23:38 ` redi at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: redi at gcc dot gnu.org @ 2015-04-21 23:38 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65840 Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-04-21 Ever confirmed|0 |1 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2015-04-21 23:38 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-04-21 22:40 [Bug libstdc++/65840] New: type of result of at least some libstdc++ xmethods is different than real operator dje at google dot com 2015-04-21 22:57 ` [Bug libstdc++/65840] " pinskia at gcc dot gnu.org 2015-04-21 23:14 ` dje at google dot com 2015-04-21 23:38 ` redi at gcc dot gnu.org
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).