[Bug tui/14880] In split register layouts, `up` results in assertion failure in value.c

["palves at redhat dot com" <sourceware-bugzilla@sourceware.org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=14880

Pedro Alves <palves at redhat dot com> changed:

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

--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
Reproducible with current mainline too:

(top-gdb) bt
#0  internal_error (file=0x88a26c "../../src/gdb/value.c", line=549,
string=0x88a220 "%s: Assertion `%s' failed.") at ../../src/gdb/utils.c:844
#1  0x000000000057b9cd in value_available_contents_eq (val1=0x10fa900,
offset1=0, val2=0x10f9e10, offset2=0, length=8) at ../../src/gdb/value.c:549
#2  0x00000000004fd756 in tui_get_register (frame=0xd5c430, data=0x109a548,
regnum=0, changedp=0x109a560) at ../../src/gdb/tui/tui-regs.c:736
#3  0x00000000004fd111 in tui_check_register_values (frame=0xd5c430) at
../../src/gdb/tui/tui-regs.c:521
#4  0x0000000000501884 in tui_check_data_values (frame=0xd5c430) at
../../src/gdb/tui/tui-windata.c:234
#5  0x00000000004f976f in tui_selected_frame_level_changed_hook (level=1) at
../../src/gdb/tui/tui-hooks.c:222
#6  0x00000000006f0681 in select_frame (fi=0xd5c430) at
../../src/gdb/frame.c:1490
#7  0x00000000005dd94b in up_silently_base (count_exp=0x0) at
../../src/gdb/stack.c:2268
#8  0x00000000005dd985 in up_command (count_exp=0x0, from_tty=1) at
../../src/gdb/stack.c:2280
#9  0x00000000004dc5cf in do_cfunc (c=0xd3f720, args=0x0, from_tty=1) at
../../src/gdb/cli/cli-decode.c:113
#10 0x00000000004df664 in cmd_func (cmd=0xd3f720, args=0x0, from_tty=1) at
../../src/gdb/cli/cli-decode.c:1888
#11 0x00000000006e43e1 in execute_command (p=0xc7e6c2 "", from_tty=1) at
../../src/gdb/top.c:489

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