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* [Bug c++/15401] New: "set print object on" + printing variables of type: a reference to derived class. @ 2013-04-25 19:14 marcin.konarski at gmail dot com 2013-05-07 17:51 ` [Bug c++/15401] " jan.kratochvil at redhat dot com ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: marcin.konarski at gmail dot com @ 2013-04-25 19:14 UTC (permalink / raw) To: gdb-prs http://sourceware.org/bugzilla/show_bug.cgi?id=15401 Bug #: 15401 Summary: "set print object on" + printing variables of type: a reference to derived class. Product: gdb Version: 7.5 Status: NEW Severity: normal Priority: P2 Component: c++ AssignedTo: unassigned@sourceware.org ReportedBy: marcin.konarski@gmail.com Classification: Unclassified gdb prints values of variables that are of reference type like they were a pointers if value in question is instance of some derived type that has a vtable. Notice difference in how f2 variable is printed in session script that is included below after I turn "set print object on". How to reproduce: [amok@vegeta](2/3)~/$ lsb_release -a LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch Distributor ID: Ubuntu Description: Ubuntu Raring Ringtail (development branch) Release: 13.04 Codename: raring [amok@vegeta](2/3)~/$ g++ --version g++ (Ubuntu/Linaro 4.7.3-1ubuntu1) 4.7.3 Copyright (C) 2012 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. [amok@vegeta](2/3)~/$ cat set-print-object-on.cxx struct Base { virtual ~Base() {} }; struct Foo : public Base { }; int main( int, char** ) { Foo f; Foo& f2( f ); return ( sizeof ( f2 ) ); } [amok@vegeta](2/3)~/$ g++ -g set-print-object-on.cxx [amok@vegeta](2/3)~/$ gdb ./a.out GNU gdb (GDB) 7.5.91.20130417-cvs-ubuntu Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /home/amok/a.out...done. (gdb) b main Breakpoint 1 at 0x4006ec: file set-print-object-on.cxx, line 8. (gdb) r Starting program: /home/amok/a.out Breakpoint 1, main () at set-print-object-on.cxx:8 8 Foo f; (gdb) n 9 Foo& f2( f ); (gdb) 10 return ( sizeof ( f2 ) ); (gdb) p f2 $1 = (Foo &) @0x7fffffffd550: {<Base> = {_vptr.Base = 0x4008f0 <vtable for Foo+16>}, <No data fields>} (gdb) set print object on (gdb) p f2 $2 = (Foo *) 0x7fffffffd550 (gdb) quit A debugging session is active. Inferior 1 [process 2512] will be killed. Quit anyway? (y or n) y [amok@vegeta](2/3)~/$ -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/15401] "set print object on" + printing variables of type: a reference to derived class. 2013-04-25 19:14 [Bug c++/15401] New: "set print object on" + printing variables of type: a reference to derived class marcin.konarski at gmail dot com @ 2013-05-07 17:51 ` jan.kratochvil at redhat dot com 2013-05-08 18:13 ` tromey at redhat dot com ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: jan.kratochvil at redhat dot com @ 2013-05-07 17:51 UTC (permalink / raw) To: gdb-prs http://sourceware.org/bugzilla/show_bug.cgi?id=15401 Jan Kratochvil <jan.kratochvil at redhat dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jan.kratochvil at redhat | |dot com -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/15401] "set print object on" + printing variables of type: a reference to derived class. 2013-04-25 19:14 [Bug c++/15401] New: "set print object on" + printing variables of type: a reference to derived class marcin.konarski at gmail dot com 2013-05-07 17:51 ` [Bug c++/15401] " jan.kratochvil at redhat dot com @ 2013-05-08 18:13 ` tromey at redhat dot com 2013-05-22 20:51 ` cvs-commit at gcc dot gnu.org 2013-05-22 20:52 ` tromey at redhat dot com 3 siblings, 0 replies; 5+ messages in thread From: tromey at redhat dot com @ 2013-05-08 18:13 UTC (permalink / raw) To: gdb-prs http://sourceware.org/bugzilla/show_bug.cgi?id=15401 Tom Tromey <tromey at redhat dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tromey at redhat dot com AssignedTo|unassigned at sourceware |tromey at redhat dot com |dot org | --- Comment #1 from Tom Tromey <tromey at redhat dot com> 2013-05-08 18:13:09 UTC --- Testing a patch. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/15401] "set print object on" + printing variables of type: a reference to derived class. 2013-04-25 19:14 [Bug c++/15401] New: "set print object on" + printing variables of type: a reference to derived class marcin.konarski at gmail dot com 2013-05-07 17:51 ` [Bug c++/15401] " jan.kratochvil at redhat dot com 2013-05-08 18:13 ` tromey at redhat dot com @ 2013-05-22 20:51 ` cvs-commit at gcc dot gnu.org 2013-05-22 20:52 ` tromey at redhat dot com 3 siblings, 0 replies; 5+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2013-05-22 20:51 UTC (permalink / raw) To: gdb-prs http://sourceware.org/bugzilla/show_bug.cgi?id=15401 --- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> 2013-05-22 20:51:51 UTC --- CVSROOT: /cvs/src Module name: src Changes by: tromey@sourceware.org 2013-05-22 20:51:49 Modified files: gdb : ChangeLog c-valprint.c gdb/testsuite : ChangeLog gdb/testsuite/gdb.cp: class2.cc class2.exp Log message: PR c++/15401: * c-valprint.c (c_value_print): Use value_addr for references. Convert back to reference type with value_ref. gdb/testsuite * gdb.cp/class2.cc (main): New local 'aref'. * gdb.cp/class2.exp: Check printing of 'aref'. Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.15616&r2=1.15617 http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/c-valprint.c.diff?cvsroot=src&r1=1.102&r2=1.103 http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.3674&r2=1.3675 http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.cp/class2.cc.diff?cvsroot=src&r1=1.12&r2=1.13 http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.cp/class2.exp.diff?cvsroot=src&r1=1.18&r2=1.19 -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/15401] "set print object on" + printing variables of type: a reference to derived class. 2013-04-25 19:14 [Bug c++/15401] New: "set print object on" + printing variables of type: a reference to derived class marcin.konarski at gmail dot com ` (2 preceding siblings ...) 2013-05-22 20:51 ` cvs-commit at gcc dot gnu.org @ 2013-05-22 20:52 ` tromey at redhat dot com 3 siblings, 0 replies; 5+ messages in thread From: tromey at redhat dot com @ 2013-05-22 20:52 UTC (permalink / raw) To: gdb-prs http://sourceware.org/bugzilla/show_bug.cgi?id=15401 Tom Tromey <tromey at redhat dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED Target Milestone|--- |7.7 --- Comment #3 from Tom Tromey <tromey at redhat dot com> 2013-05-22 20:52:39 UTC --- Fixed. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-05-22 20:52 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-04-25 19:14 [Bug c++/15401] New: "set print object on" + printing variables of type: a reference to derived class marcin.konarski at gmail dot com 2013-05-07 17:51 ` [Bug c++/15401] " jan.kratochvil at redhat dot com 2013-05-08 18:13 ` tromey at redhat dot com 2013-05-22 20:51 ` cvs-commit at gcc dot gnu.org 2013-05-22 20:52 ` tromey at redhat dot com
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