[Bug testsuite/30458] FAIL: gdb.tui/wrap-line.exp: width-auto-detected: cli: prompt after wrap

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

https://sourceware.org/bugzilla/show_bug.cgi?id=30458

--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
After adding:
...
diff --git a/readline/readline/signals.c b/readline/readline/signals.c
index 8fedc370a1a..1cfbf6f22df 100644
--- a/readline/readline/signals.c
+++ b/readline/readline/signals.c
@@ -46,6 +46,8 @@

 #include "rlprivate.h"

+#include <assert.h>
+
 #if defined (HANDLE_SIGNALS)

 #if !defined (RETSIGTYPE)
@@ -753,6 +755,8 @@ rl_echo_signal_char (int sig)
   if (_rl_echoctl == 0 || _rl_echo_control_chars == 0)
     return;

+  assert (0);
+  
   switch (sig)
     {
     case SIGINT:  c = _rl_intr_char; break;
...
I get:
...
(gdb) bt
#0  0x00007fe4160c071b in raise () from /lib64/libpthread.so.0
#1  0x000000000078ae45 in handle_fatal_signal (sig=6) at
/data/vries/gdb/src/gdb/event-top.c:903
#2  <signal handler called>
#3  0x00007fe413f83c6b in raise () from /lib64/libc.so.6
#4  0x00007fe413f85305 in abort () from /lib64/libc.so.6
#5  0x00007fe413f7bc6a in __assert_fail_base () from /lib64/libc.so.6
#6  0x00007fe413f7bcf2 in __assert_fail () from /lib64/libc.so.6
#7  0x0000000000d8f8bb in rl_echo_signal_char (sig=2) at
/data/vries/gdb/src/readline/readline/signals.c:758
#8  0x0000000000d8f124 in _rl_handle_signal (sig=2) at
/data/vries/gdb/src/readline/readline/signals.c:276
#9  0x0000000000d8f00b in _rl_signal_handler (sig=2) at
/data/vries/gdb/src/readline/readline/signals.c:163
#10 0x0000000000d8f7f9 in _rl_release_sigint () at
/data/vries/gdb/src/readline/readline/signals.c:685
#11 0x0000000000d8ac5e in rl_redisplay () at
/data/vries/gdb/src/readline/readline/display.c:1570
#12 0x0000000000d734c5 in _rl_internal_char_cleanup () at
/data/vries/gdb/src/readline/readline/readline.c:533
#13 0x0000000000d7380c in readline_internal_char () at
/data/vries/gdb/src/readline/readline/readline.c:681
#14 0x0000000000d93875 in rl_callback_read_char () at
/data/vries/gdb/src/readline/readline/callback.c:264
#15 0x0000000000789cd8 in gdb_rl_callback_read_char_wrapper_noexcept () at
/data/vries/gdb/src/gdb/event-top.c:192
#16 0x0000000000789d74 in gdb_rl_callback_read_char_wrapper
(client_data=0x2a98e60)
    at /data/vries/gdb/src/gdb/event-top.c:225
#17 0x0000000000cb0cc2 in stdin_event_handler (error=0, client_data=0x2a98e60)
at /data/vries/gdb/src/gdb/ui.c:155
#18 0x000000000149e214 in handle_file_event (file_ptr=0x2d1de60, ready_mask=1)
    at /data/vries/gdb/src/gdbsupport/event-loop.cc:573
#19 0x000000000149e7aa in gdb_wait_for_event (block=1) at
/data/vries/gdb/src/gdbsupport/event-loop.cc:694
#20 0x000000000149d670 in gdb_do_one_event (mstimeout=-1) at
/data/vries/gdb/src/gdbsupport/event-loop.cc:264
#21 0x000000000091288b in start_event_loop () at
/data/vries/gdb/src/gdb/main.c:412
#22 0x00000000009129db in captured_command_loop () at
/data/vries/gdb/src/gdb/main.c:476
#23 0x00000000009141c7 in captured_main (data=0x7ffcc1751f90) at
/data/vries/gdb/src/gdb/main.c:1320
#24 0x0000000000914261 in gdb_main (args=0x7ffcc1751f90) at
/data/vries/gdb/src/gdb/main.c:1339
#25 0x00000000004194ce in main (argc=10, argv=0x7ffcc17520a8) at
/data/vries/gdb/src/gdb/gdb.c:32
...

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