[Bug c++/15176] New: provide convenience variable holding exception object

[Bug c++/15176] New: provide convenience variable holding exception object

[tromey at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15176

             Bug #: 15176
           Summary: provide convenience variable holding exception object
           Product: gdb
           Version: unknown
            Status: NEW
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned@sourceware.org
        ReportedBy: tromey@redhat.com
    Classification: Unclassified


For conditional "catch catch" and "catch throw"s, it would
be nice to have a convenience variable that holds the current
exception object.  Something like:

catch throw if $_exception == 57

This is maybe related to PR 13588 -- if we go the probe
point route, the probe should expose this information as well.

The ideal thing would be to use the typeinfo to construct
an object of the right type in gdb.

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[Bug c++/15176] provide convenience variable holding exception object

[tromey at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15176

Tom Tromey <tromey at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at sourceware    |tromey at redhat dot com
                   |dot org                     |

--- Comment #1 from Tom Tromey <tromey at redhat dot com> 2013-02-27 18:21:11 UTC ---
Testing a patch.

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[Bug c++/15176] provide convenience variable holding exception object

[cvs-commit at gcc dot gnu.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=15176

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> 2013-04-15 18:09:04 UTC ---
CVSROOT:    /cvs/src
Module name:    src
Changes by:    tromey@sourceware.org    2013-04-15 18:09:02

Modified files:
    gdb            : ChangeLog NEWS break-catch-throw.c cp-abi.c 
                     cp-abi.h gnu-v3-abi.c 
    gdb/doc        : ChangeLog gdb.texinfo 
    gdb/testsuite  : ChangeLog 
    gdb/testsuite/gdb.base: default.exp 
    gdb/testsuite/lib: gdb.exp 
Added files:
    gdb/testsuite/gdb.cp: exceptprint.cc exceptprint.exp 

Log message:
    PR c++/15176:
    * NEWS: Update.
    * break-catch-throw.c (compute_exception): New function.
    (exception_funcs): New global.
    (_initialize_break_catch_throw): Create $_exception.
    * cp-abi.c (cplus_type_from_type_info): New function.
    * cp-abi.h (cplus_type_from_type_info): Declare.
    (struct cp_abi_ops) <get_type_from_type_info>: New field.
    * gnu-v3-abi.c (gnuv3_get_typename_from_type_info)
    (gnuv3_get_type_from_type_info): New functions.
    (init_gnuv3_ops): Set get_type_from_type_info ABI field.
    gdb/doc
    * gdb.texinfo (Set Catchpoints): Document $_exception.
    (Convenience Vars): Mention $_exception.
    gdb/testsuite
    * gdb.base/default.exp: Update for $_exception.
    * gdb.cp/exceptprint.cc: New file.
    * gdb.cp/exceptprint.exp: New file.
    * lib/gdb.exp (skip_libstdcxx_probe_tests): New proc.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.15416&r2=1.15417
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/NEWS.diff?cvsroot=src&r1=1.589&r2=1.590
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/break-catch-throw.c.diff?cvsroot=src&r1=1.3&r2=1.4
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/cp-abi.c.diff?cvsroot=src&r1=1.41&r2=1.42
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/cp-abi.h.diff?cvsroot=src&r1=1.26&r2=1.27
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/gnu-v3-abi.c.diff?cvsroot=src&r1=1.83&r2=1.84
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/doc/ChangeLog.diff?cvsroot=src&r1=1.1445&r2=1.1446
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/doc/gdb.texinfo.diff?cvsroot=src&r1=1.1079&r2=1.1080
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.3625&r2=1.3626
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.base/default.exp.diff?cvsroot=src&r1=1.63&r2=1.64
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.cp/exceptprint.cc.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.cp/exceptprint.exp.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/lib/gdb.exp.diff?cvsroot=src&r1=1.228&r2=1.229

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[Bug c++/15176] provide convenience variable holding exception object

[tromey at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15176

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> 2013-04-15 18:16:57 UTC ---
Fix checked in.

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