[Bug gdb/14306] New: GDB doesn't work when execing different format

[Bug gdb/14306] New: GDB doesn't work when execing different format

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14306

             Bug #: 14306
           Summary: GDB doesn't work when execing different format
           Product: gdb
           Version: 7.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
        AssignedTo: unassigned@sourceware.org
        ReportedBy: hjl.tools@gmail.com
    Classification: Unclassified


On Linux/x86-64:

[hjl@gnu-6 tmp]$ cat x.c
#include <unistd.h>

int
main ()
{
  execl ("/bin/ls", "ls", NULL);
}
[hjl@gnu-6 tmp]$ gcc -m32 x.c -g
[hjl@gnu-6 tmp]$ ./a.out 
...
plugtmp-23           zlib
[hjl@gnu-6 tmp]$ gdb a.out
GNU gdb (GDB) 7.4.50.20120327-cvs
Copyright (C) 2012 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-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /tmp/a.out...done.
(gdb) b main
Breakpoint 1 at 0x80483f5: file x.c, line 6.
(gdb) r
Starting program: /tmp/a.out 

Breakpoint 1, main () at x.c:6
6      execl ("/bin/ls", "ls", NULL);
(gdb) c
Continuing.
process 21057 is executing new program: /usr/bin/ls
warning: Selected architecture i386:x86-64 is not compatible with reported
target architecture i386
Architecture of file not recognized.
(gdb)

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[Bug gdb/14306] GDB doesn't work when execing different format

[palves at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14306

Pedro Alves <palves at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |palves at redhat dot com
         AssignedTo|unassigned at sourceware    |palves at redhat dot com
                   |dot org                     |

--- Comment #1 from Pedro Alves <palves at redhat dot com> 2012-11-09 10:08:55 UTC ---
We need to flush the target description on execs.

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[Bug gdb/14306] GDB doesn't work when execing different format

[cvs-commit at gcc dot gnu.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=14306

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> 2012-11-09 12:20:36 UTC ---
CVSROOT:    /cvs/src
Module name:    src
Changes by:    palves@sourceware.org    2012-11-09 12:20:24

Modified files:
    gdb            : ChangeLog infrun.c 
    gdb/testsuite  : ChangeLog 
Added files:
    gdb/testsuite/gdb.multi: multi-arch-exec.c multi-arch-exec.exp 

Log message:
    2012-11-09  Pedro Alves  <palves@redhat.com>

    PR gdb/14306

    * infrun.c: Include target-descriptions.h.
    (follow_exec): Fetch new target description.

    gdb/testsuite/
    2012-11-09  Pedro Alves  <palves@redhat.com>

    PR gdb/14306

    * gdb.multi/multi-arch-exec.c: New file.
    * gdb.multi/multi-arch-exec.exp: New file.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.14806&r2=1.14807
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/infrun.c.diff?cvsroot=src&r1=1.564&r2=1.565
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.3448&r2=1.3449
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.multi/multi-arch-exec.c.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.multi/multi-arch-exec.exp.diff?cvsroot=src&r1=NONE&r2=1.1

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[Bug gdb/14306] GDB doesn't work when execing different format

[palves at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14306

Pedro Alves <palves at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #3 from Pedro Alves <palves at redhat dot com> 2012-11-09 14:30:00 UTC ---
Patch checked in:

 http://sourceware.org/ml/gdb-patches/2012-11/msg00247.html

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[Bug gdb/14306] GDB doesn't work when execing different format

[palves at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14306

Pedro Alves <palves at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |7.6

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[Bug gdb/14306] GDB doesn't work when execing different format

[reid.kleckner at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14306

Reid Kleckner <reid.kleckner at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |reid.kleckner at gmail dot
                   |                            |com

--- Comment #4 from Reid Kleckner <reid.kleckner at gmail dot com> 2013-02-04 18:17:17 UTC ---
*** Bug 15093 has been marked as a duplicate of this bug. ***

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