[Bug breakpoints/14974] New: gdb messes up multi-breakpoints on rerun

[Bug breakpoints/14974] New: gdb messes up multi-breakpoints on rerun

[dje at google dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14974

             Bug #: 14974
           Summary: gdb messes up multi-breakpoints on rerun
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: breakpoints
        AssignedTo: unassigned@sourceware.org
        ReportedBy: dje@google.com
    Classification: Unclassified


gdb is losing track of multi-breakpoint status across reruns.
1.1 becomes 1.2 and 1.2 becomes 1.1, and the disabled status gets switched.

To recreate this compile with -gdwarf-4 -fdebug-types-section, dunno why this
is so yet.

Passing (compile with -g)

(gdb) PASS: gdb.cp/mb-inline.exp: run to breakpoint 2
disable 1.2^M
(gdb) PASS: gdb.cp/mb-inline.exp: disabling location: disable
run ^M
The program being debugged has been started already.^M
Start it from the beginning? (y or n) y^M
Starting program:
/usr/local/google/home/dje/gnu/sourceware/pure-gdb/build/obj64/gdb/testsuite/gdb.cp/mb-inline
^M
^M
Breakpoint 1, foo (i=0) at ../../../src/gdb/testsuite/gdb.cp/mb-inline.h:26^M
26        return i; // set breakpoint here^M
(gdb) PASS: gdb.cp/mb-inline.exp: disabling location: run to breakpoint
info break^M
Num     Type           Disp Enb Address            What^M
1       breakpoint     keep y   <MULTIPLE>         ^M
        breakpoint already hit 1 time^M
1.1                         y     0x00000000004005a7 in foo(int) at
../../../src/gdb/testsuite/gdb.cp/mb-inline.h:26^M
1.2                         n     0x0000000000400603 in foo(int) at
../../../src/gdb/testsuite/gdb.cp/mb-inline.h:26^M
(gdb) PASS: gdb.cp/mb-inline.exp: disabled breakpoint 1.2

Failing (compile with -gdwarf-4 -fdebug-types-section):

(gdb) PASS: gdb.cp/mb-inline.exp: run to breakpoint 2
disable 1.2^M
(gdb) PASS: gdb.cp/mb-inline.exp: disabling location: disable
run ^M
The program being debugged has been started already.^M
Start it from the beginning? (y or n) y^M
Starting program:
/usr/local/google/home/dje/gnu/sourceware/pure-gdb/build/obj64/gdb/testsuite/gdb.cp/mb-inline
^M
^M
Breakpoint 1, foo (i=1) at ../../../src/gdb/testsuite/gdb.cp/mb-inline.h:26^M
26        return i; // set breakpoint here^M
(gdb) FAIL: gdb.cp/mb-inline.exp: disabling location: run to breakpoint
info break^M
Num     Type           Disp Enb Address            What^M
1       breakpoint     keep y   <MULTIPLE>         ^M
        breakpoint already hit 1 time^M
1.1                         y     0x0000000000400603 in foo(int) at
../../../src/gdb/testsuite/gdb.cp/mb-inline.h:26^M
1.2                         n     0x00000000004005a7 in foo(int) at
../../../src/gdb/testsuite/gdb.cp/mb-inline.h:26^M
(gdb) PASS: gdb.cp/mb-inline.exp: disabled breakpoint 1.2

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[Bug breakpoints/14974] gdb messes up multi-breakpoints on rerun

[dje at google dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14974

--- Comment #1 from dje at google dot com 2012-12-21 01:09:36 UTC ---
Data point: It may be the presence of .gdb_index and now -gdwarf-4
-fdebug-types-section that's required to repro.

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[Bug breakpoints/14974] gdb messes up multi-breakpoints on rerun

[jan.kratochvil at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14974

Jan Kratochvil <jan.kratochvil at redhat dot com> changed:

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

--- Comment #2 from Jan Kratochvil <jan.kratochvil at redhat dot com> 2012-12-24 03:48:17 UTC ---
[patch] sort multi-loc bpt; fixes mb-inline.exp false gdbindex FAIL
http://sourceware.org/ml/gdb-patches/2012-12/msg00781.html

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