[Bug threads/27812] [m32] linux-nat.c:1765: internal-error: virtual void linux_nat_target::resume(ptid_t, int, gdb_signal): Assertion `signo == GDB_SIGNAL_0' failed

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=27812

--- Comment #9 from Tom de Vries <vries at gcc dot gnu.org> ---
Using this patch (so, disabling the assert, and printing a message that it
would have triggered otherwise):
...
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index c45e335a762..f0104f130cc 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -1712,7 +1712,8 @@ linux_nat_target::resume (ptid_t ptid, int step, enum
gdb_signal
 signo)
     {
       /* FIXME: What should we do if we are supposed to continue
         this thread with a signal?  */
-      gdb_assert (signo == GDB_SIGNAL_0);
+      if (!((signo == GDB_SIGNAL_0)))
+       fprintf (stderr, "ASSERT TRIGGERED\n");

       linux_nat_debug_printf ("Short circuiting for status 0x%x",
                              lp->status);
...
I get:
...
(gdb) PASS: gdb.threads/simultaneous-step-resume-breakpoint.exp: step thread 2
step^M
sleep: Invalid argument^M
simultaneous-step-resume-breakpoint:
/home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.threads/simultaneous-step-resume-breakpoint.c:48:
func: Assertion `i == 0' failed.^M
sleep: Invalid argument^M
simultaneous-step-resume-breakpoint:
/home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.threads/simultaneous-step-resume-breakpoint.c:48:
func: Assertion `i == 0' failed.^M
^M
Thread 2 "simultaneous-st" received signal SIGABRT, Aborted.^M
[Switching to Thread 0xf7cb4b40 (LWP 18067)]^M
0xf7fd5159 in __kernel_vsyscall ()^M
(gdb) FAIL: gdb.threads/simultaneous-step-resume-breakpoint.exp: step thread 3
continue^M
Continuing.^M
^M
Thread 3 received signal SIGABRT, Aborted.^M
[Switching to Thread 0xf74b3b40 (LWP 18068)]^M
Cannot remove breakpoints because program is no longer writable.^M
Further execution is probably impossible.^M
0xf7fd5159 in __kernel_vsyscall ()^M
(gdb) FAIL: gdb.threads/simultaneous-step-resume-breakpoint.exp: first continue
continue^M
Continuing.^M
ASSERT TRIGGERED^M
^M
Program terminated with signal SIGABRT, Aborted.^M
The program no longer exists.^M
(gdb) FAIL: gdb.threads/simultaneous-step-resume-breakpoint.exp: second
continue
continue^M
The program is not being run.^M
(gdb) FAIL: gdb.threads/simultaneous-step-resume-breakpoint.exp: third continue
(the program is no longer running)
...

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