[Bug gdb/18155] New: gdb TUI SEGVs when resizing asm window

["anton at samba dot org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=18155

            Bug ID: 18155
           Summary: gdb TUI SEGVs when resizing asm window
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: anton at samba dot org

To reproduce:

gdb /bin/bash
layout asm
[ resize the window ]

#0  tui_set_disassem_content (gdbarch=gdbarch@entry=0x1c99780, pc=4320912) at
../../binutils-gdb/gdb/tui/tui-disasm.c:195
#1  0x00000000004fbfab in tui_update_source_window_as_is
(win_info=win_info@entry=0x1d32f00, gdbarch=gdbarch@entry=0x1c99780,
s=s@entry=0x0, line_or_addr=..., 
    noerror=noerror@entry=1) at ../../binutils-gdb/gdb/tui/tui-winsource.c:98
#2  0x00000000004fc05c in tui_update_source_window
(win_info=win_info@entry=0x1d32f00, gdbarch=gdbarch@entry=0x1c99780,
s=s@entry=0x0, line_or_addr=..., 
    noerror=noerror@entry=1) at ../../binutils-gdb/gdb/tui/tui-winsource.c:78
#3  0x00000000004f9063 in make_visible_with_new_height
(win_info=win_info@entry=0x1d32f00) at
../../binutils-gdb/gdb/tui/tui-win.c:1447
#4  0x00000000004fac7d in tui_resize_all () at
../../binutils-gdb/gdb/tui/tui-win.c:742
#5  0x00000000004fad69 in tui_async_resize_screen (arg=<optimised out>) at
../../binutils-gdb/gdb/tui/tui-win.c:858
#6  0x00000000005c4d6c in invoke_async_signal_handlers () at
../../binutils-gdb/gdb/event-loop.c:878
#7  gdb_do_one_event () at ../../binutils-gdb/gdb/event-loop.c:266
#8  0x00000000005c4f1e in start_event_loop () at
../../binutils-gdb/gdb/event-loop.c:333
#9  0x00000000005be8e3 in captured_command_loop (data=data@entry=0x0) at
../../binutils-gdb/gdb/main.c:321
#10 0x00000000005bb97d in catch_errors (func=func@entry=0x5be8d0
<captured_command_loop>, func_args=func_args@entry=0x0,
errstring=errstring@entry=0x7acf59 "", 
    mask=mask@entry=RETURN_MASK_ALL) at ../../binutils-gdb/gdb/exceptions.c:240
#11 0x00000000005bf976 in captured_main (data=data@entry=0x7fff97c76c50) at
../../binutils-gdb/gdb/main.c:1156
#12 0x00000000005bb97d in catch_errors (func=func@entry=0x5beed0
<captured_main>, func_args=func_args@entry=0x7fff97c76c50,
errstring=errstring@entry=0x7acf59 "", 
    mask=mask@entry=RETURN_MASK_ALL) at ../../binutils-gdb/gdb/exceptions.c:240
#13 0x00000000005bfe0b in gdb_main (args=args@entry=0x7fff97c76c50) at
../../binutils-gdb/gdb/main.c:1164
#14 0x0000000000461a05 in main (argc=<optimised out>, argv=<optimised out>) at
../../binutils-gdb/gdb/gdb.c:32

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