[Bug gdb/15949] New: $_exitcode not reset on rerun

[Bug gdb/15949] New: $_exitcode not reset on rerun

[dje at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=15949

            Bug ID: 15949
           Summary: $_exitcode not reset on rerun
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: dje at google dot com

If I run a program to main and print $_exitcode I get "void", which is
expected.
But if I then continue the program to completion and rerun to main, $_exitcode
has the last exit code.  Seems like it should get reset to void on each rerun.

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[Bug gdb/15949] $_exitcode not reset on rerun

[dje at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=15949

dje at google dot com changed:

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

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[Bug gdb/15949] $_exitcode not reset on rerun

[sergiodj at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=15949

--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Some brain dump here.

It would be good if GDB could provide a way to recover the last exit code of
the inferior.  This way, we could safely reset $_exitcode without worrying
about losing this information.  My first idea was to create yet another new
convenience variable, e.g. "$_last_exitcode", but that may confuse users...

Another thing to (probably) consider is that $_exitcode is about to suffer some
major changes in order to support multi-inferior.  It will probably become a
lazy convenience variable.  Anyway, just something to consider.

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[Bug gdb/15949] $_exitcode not reset on rerun

[sergiodj at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=15949

--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Correction: when I said about "a way to recover the last exit code of the
inferior", I meant "the last exit code issued by the inferior after we started
it again".  Something like what $_exitcode is already doing, but will stop to
do after we fix this bug :-P.

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[Bug gdb/15949] $_exitcode not reset on rerun

[dje at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=15949

--- Comment #3 from dje at google dot com ---
re: multi-inferior: I think $_exitcode would just track the current inferior.

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