Re: [PATCH] Fix "spawn id XYZ not open" errors in gdb.mi/mi-exec-run.exp

[Alexandra Petlanova Hajkova <ahajkova@redhat.com>]

On Thu, Feb 24, 2022 at 6:42 PM Keith Seitz via Gdb-patches <
gdb-patches@sourceware.org> wrote:

> Running mi-exec-run.exp on native-extended-gdbserver/-m{32,64}
> causes several Tcl errors to appear. For example,
>
> (gdb)
> ERROR: : spawn id exp20 not open
>     while executing
> "expect {
> -i exp11 -timeout 10
>                 -i "$inferior_spawn_id"
>                 -re ".*Cannot exec.*Permission denied" {
>                     set saw_perm_error 1
>                     verbose -log "saw..."
>     ("uplevel" body line 1)
>     invoked from within
> "uplevel $body" NONE : spawn id exp20 not open
> UNRESOLVED: gdb.mi/mi-exec-run.exp: inferior-tty=separate: mi=separate:
> force-fail=1: run failure detected (eof)
>
> This is happening because of the way this test is implemented:
>
>         while {1} {
>             gdb_expect {
>                 -i "$inferior_spawn_id"
>                 -re ".*Cannot exec.*Permission denied" {
>                     set saw_perm_error 1
>                     verbose -log "saw mi error"
>                 }
>                 -i "$gdb_spawn_id"
>                 -re "\\^error,msg=\"During startup program exited with
> code 127" {
>                     set saw_mi_error 1
>                     verbose -log "saw mi error"
>                 }
>                # and so on
>             }
>         }
> I can see this ERROR on Fedora Rawhide when running:
>

 make check RUNTESTFLAGS="--target_board native-extended-gdbserver"
 TESTS=gdb.mi/mi-exec-run.exp

I'm using glibc-2.35.9000-6.fc37.x86_64 and gcc-12.0.1-0.9.fc37.x86_64.
After applying this patch the TCL errors are gone and I can see one FAIL:

Running
/root/build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.mi/mi-exec-run.exp
...
FAIL: gdb.mi/mi-exec-run.exp: inferior-tty=separate: mi=separate:
force-fail=0: breakpoint hit reported on console (timeout)

=== gdb Summary ===

# of expected passes 13
# of unexpected failures 1