[Bug varobj/14734] New: Response for "-var-update --all-values *" contains incorrect changelist in case the evaluation causes SIGSEGV

[Bug varobj/14734] New: Response for "-var-update --all-values *" contains incorrect changelist in case the evaluation causes SIGSEGV

[nikolay.koldunov at oracle dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14734

             Bug #: 14734
           Summary: Response for "-var-update --all-values *" contains
                    incorrect changelist in case the evaluation causes
                    SIGSEGV
           Product: gdb
           Version: 7.5
            Status: NEW
          Severity: normal
          Priority: P2
         Component: varobj
        AssignedTo: unassigned@sourceware.org
        ReportedBy: nikolay.koldunov@oracle.com
    Classification: Unclassified


Steps to reproduce:
 - create and compile a C++ sample
 - execute GDB with "--interpreter mi" parameter
 - start debugging session
 - create a variable object which causes segmentation fault
 - make GDB update all variable objects (-var-update --all-values *)

Actual result:
 - GDB generates incorrect response containing information about the
segmentation fault error (for example,
'23^done,changelist=[reason="signal-received",signal-name="SIGSEGV",signal-meaning="Segmentation
fault",frame={addr="0x00007ffff74982e1",func="__strlen_sse2_pminub",args=[],file="../sysdeps/x86_64/multiarch/strlen-sse2-pminub.S",line="39"},reason="signal-received",signal-name="SIGSEGV",signal-meaning="Segmentation
fault",frame={addr="0x00007ffff74982e1",func="__strlen_sse2_pminub",args=[],file="../sysdeps/x86_64/multiarch/strlen-sse2-pminub.S",line="39"}]')

Expected result:
 - GDB shows valid changelist and generates a segmentation fault error

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[Bug varobj/14734] Response for "-var-update --all-values *" contains incorrect changelist in case the evaluation causes SIGSEGV

[nikolay.koldunov at oracle dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14734

nikolay.koldunov at oracle dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nikolay.koldunov at oracle
                   |                            |dot com

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[Bug varobj/14734] Response for "-var-update --all-values *" contains incorrect changelist in case the evaluation causes SIGSEGV

[nikolay.koldunov at oracle dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14734

--- Comment #1 from nikolay.koldunov at oracle dot com ---
There is another example of confusing output:
*stopped,changelist=[{name="var151",value="0",in_scope="true",type_changed="false",has_more="0"},reason="signal-received",signal-name="SIGTRAP",signal-meaning="Trace/breakpoint
trap",frame={addr="0x774e40f1",func="ntdll!DbgUserBreakPoint",args=[],from="/cygdrive/c/Windows/system32/ntdll.dll"},thread-id="3",stopped-threads="all"

May be this issue is not connected to variable objects.

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[Bug varobj/14734] Response for "-var-update --all-values *" contains incorrect changelist in case the evaluation causes SIGSEGV

[nikolay.koldunov at oracle dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14734

--- Comment #2 from nikolay.koldunov at oracle dot com ---
*stopped,changelist=[reason="signal-received",signal-name="SIGINT",signal-meaning="Interrupt",frame={addr="0x00007ffff6cfb05e",func="pthread_cond_timedwait@@GLIBC_2.3.2",args=[],file="../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S",fullname="/build/buildd/eglibc-2.17/nptl/../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S",line="238"},thread-id="11",stopped-threads="all",core="6"

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[Bug varobj/14734] Response for "-var-update --all-values *" contains incorrect changelist in case the evaluation causes SIGSEGV

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=14734

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at sourceware dot org

--- Comment #4 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to nikolay.koldunov from comment #0)

>  - create a variable object which causes segmentation fault

I guess this can be done but it seems pretty bad.

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