[Bug c++/9065] can't use typeid

[Bug c++/9065] can't use typeid

[tromey at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=9065

Tom Tromey <tromey at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at redhat dot com

--- Comment #2 from Tom Tromey <tromey at redhat dot com> 2012-02-23 21:54:43 UTC ---
I think this can easily be done for classes with vtables.
For other types it does not appear to be easy; it may not
even be possible.

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[Bug c++/9065] can't use typeid

[LpSolit at netscape dot net]

http://sourceware.org/bugzilla/show_bug.cgi?id=9065

Tom Tromey <tromey at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|cmoller at redhat dot com   |unassigned at sourceware
                   |                            |dot org
         AssignedTo|unassigned at sourceware    |tromey at redhat dot com
                   |dot org                     |
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |7.7

Frédéric Buclin <LpSolit at netscape dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|"grover, grover at kuchera  |
                   |dot com                     |

--- Comment #3 from Tom Tromey <tromey at redhat dot com> 2013-02-22 19:35:49 UTC ---
(In reply to comment #2)
> I think this can easily be done for classes with vtables.
> For other types it does not appear to be easy; it may not
> even be possible.

We can be optimistic and try to find the symbol.
For a type named T, we can just look up the symbol "typeinfo for T".
E.g., from libstdc++

[...]
0000003be82eec80 V typeinfo for signed char
0000003be82eee60 V typeinfo for bool
0000003be82eece0 V typeinfo for char
0000003be82ee7a0 V typeinfo for double
[...]

--- Comment #4 from Tom Tromey <tromey at redhat dot com> 2013-02-25 16:46:03 UTC ---
I have an initial patch for this.

--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> 2013-04-15 17:36:15 UTC ---
CVSROOT:    /cvs/src
Module name:    src
Changes by:    tromey@sourceware.org    2013-04-15 17:36:14

Modified files:
    gdb            : ChangeLog NEWS breakpoint.c c-exp.y cp-abi.c 
                     cp-abi.h eval.c expprint.c gnu-v3-abi.c parse.c 
                     std-operator.def 
    gdb/testsuite  : ChangeLog 
Added files:
    gdb/testsuite/gdb.cp: typeid.cc typeid.exp 

Log message:
    PR c++/9065:
    * NEWS: Update.
    * breakpoint.c (watchpoint_exp_is_const): Add OP_TYPEID.
    * c-exp.y (TYPEID): New token.
    (exp): Add new TYPEID productions.
    (ident_tokens): Add "typeid".
    * cp-abi.c (cplus_typeid, cplus_typeid_type): New functions.
    * cp-abi.h (cplus_typeid, cplus_typeid_type): Declare.
    (struct cp_abi_ops) <get_typeid, get_typeid_type>: New fields.
    * eval.c (evaluate_subexp_standard) <OP_TYPEID>: New case.
    * expprint.c (dump_subexp_body_standard) <OP_TYPEID>: New
    case.
    * gnu-v3-abi.c (std_type_info_gdbarch_data): New global.
    (build_std_type_info_type, gnuv3_get_typeid_type)
    (gnuv3_get_typeid): New functions.
    (init_gnuv3_ops): Initialize std_type_info_gdbarch_data.  Set
    new fields on ABI object.
    * parse.c (operator_length_standard) <OP_TYPEID>: New case.
    * std-operator.def (OP_TYPEID): New.
    gdb/testsuite
    * gdb.cp/typeid.cc: New file.
    * gdb.cp/typeid.exp: New file.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.15412&r2=1.15413
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/NEWS.diff?cvsroot=src&r1=1.588&r2=1.589
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/breakpoint.c.diff?cvsroot=src&r1=1.754&r2=1.755
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/c-exp.y.diff?cvsroot=src&r1=1.116&r2=1.117
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/cp-abi.c.diff?cvsroot=src&r1=1.40&r2=1.41
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/cp-abi.h.diff?cvsroot=src&r1=1.25&r2=1.26
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/eval.c.diff?cvsroot=src&r1=1.181&r2=1.182
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/expprint.c.diff?cvsroot=src&r1=1.67&r2=1.68
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/gnu-v3-abi.c.diff?cvsroot=src&r1=1.82&r2=1.83
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/parse.c.diff?cvsroot=src&r1=1.139&r2=1.140
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/std-operator.def.diff?cvsroot=src&r1=1.10&r2=1.11
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.3624&r2=1.3625
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.cp/typeid.cc.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.cp/typeid.exp.diff?cvsroot=src&r1=NONE&r2=1.1

--- Comment #6 from Tom Tromey <tromey at redhat dot com> 2013-04-15 18:15:53 UTC ---
Fix checked in.

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Subject: [Bug testsuite/12649] reproducer for races of expect incomplete
 reads
Date: Fri, 24 May 2013 15:37:00 -0000
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http://sourceware.org/bugzilla/show_bug.cgi?id\x12649

--- Comment #13 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
CVSROOT:    /cvs/src
Module name:    src
Changes by:    jkratoch@sourceware.org    2013-05-24 15:37:25

Modified files:
    gdb/testsuite  : ChangeLog
    gdb/testsuite/gdb.mi: mi-dprintf.exp

Log message:
    gdb/testsuite/
    PR testsuite/12649
    * gdb.mi/mi-dprintf.exp (mi_continue_dprintf) (mi 2nd dprintf): Replace
    $mi_gdb_prompt expectation by mi_expect_stop.
    (mi 1st dprintf, agent, mi 2nd dprintf, agent)
    (mi info dprintf second time): Replace them by mi_send_resuming_command
    and mi_expect_stop.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.3680&r2=1.3681
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.mi/mi-dprintf.exp.diff?cvsroot=src&r1=1.2&r2=1.3

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<html>
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      <base href="http://sourceware.org/bugzilla/" />
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    <body>
      <p>
        <div>
            <b><a class="bz_bug_link
          bz_status_ASSIGNED "
   title="ASSIGNED - reproducer for races of expect incomplete reads"
   href="http://sourceware.org/bugzilla/show_bug.cgi?id\x12649#c13">Comment # 13</a>
              on <a class="bz_bug_link
          bz_status_ASSIGNED "
   title="ASSIGNED - reproducer for races of expect incomplete reads"
   href="http://sourceware.org/bugzilla/show_bug.cgi?id\x12649">bug 12649</a>
              from <span class="vcard"><span class="fn">cvs-commit&#64;gcc.gnu.org</span>
</span></b>
        <pre>CVSROOT:    /cvs/src
Module name:    src
Changes by:    <a href="mailto:jkratoch&#64;sourceware.org">jkratoch&#64;sourceware.org</a>    2013-05-24 15:37:25

Modified files:
    gdb/testsuite  : ChangeLog
    gdb/testsuite/gdb.mi: mi-dprintf.exp

Log message:
    gdb/testsuite/
    <a class="bz_bug_link
          bz_status_ASSIGNED "
   title="ASSIGNED - reproducer for races of expect incomplete reads"
   href="show_bug.cgi?id\x12649">PR testsuite/12649</a>
    * gdb.mi/mi-dprintf.exp (mi_continue_dprintf) (mi 2nd dprintf): Replace
    $mi_gdb_prompt expectation by mi_expect_stop.
    (mi 1st dprintf, agent, mi 2nd dprintf, agent)
    (mi info dprintf second time): Replace them by mi_send_resuming_command
    and mi_expect_stop.

Patches:
<a href="http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&amp;r1=1.3680&amp;r2=1.3681">http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&amp;r1=1.3680&amp;r2=1.3681</a>
<a href="http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.mi/mi-dprintf.exp.diff?cvsroot=src&amp;r1=1.2&amp;r2=1.3">http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.mi/mi-dprintf.exp.diff?cvsroot=src&amp;r1=1.2&amp;r2=1.3</a></pre>
        </div>
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--1369409848.03b6Fe1E1.30452--

[Bug c++/9065] can't use typeid

[gcc-bugzilla at gcc dot gnu dot org]

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


http://sourceware.org/bugzilla/show_bug.cgi?id=9065

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