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* [Bug tui/26024] New: Cannot scroll up in asm view
@ 2020-05-22 13:38 edd at theunixzoo dot co.uk
2020-06-25 19:40 ` [Bug tui/26024] " magiblot at hotmail dot com
2021-03-17 10:58 ` edd at theunixzoo dot co.uk
0 siblings, 2 replies; 3+ messages in thread
From: edd at theunixzoo dot co.uk @ 2020-05-22 13:38 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=26024
Bug ID: 26024
Summary: Cannot scroll up in asm view
Product: gdb
Version: 9.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: tui
Assignee: unassigned at sourceware dot org
Reporter: edd at theunixzoo dot co.uk
Target Milestone: ---
Hi,
As others have noted too [0], in certain cases you cannot scroll up using the
up arrow key when in the asm layout.
It seems to me that the bug manifests once the program being debugged has
crashed with SIGSEGV.
Suppose a.c is a buggy program like:
```
#include <stdio.h>
#include <stdlib.h>
int
main(int argc, char **argv)
{
printf("%s\n", (char *)0);
return (EXIT_SUCCESS);
}
```
Now we debug it:
```
$ gcc -g a.c
$ gdb a.out
...
(gdb) layout asm
```
Now verify that scrolling up and down both work. They do.
```
(gdb) run
Starting program: /tmp/a.out
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7f5a181 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
```
Now scrolling down works, but up does not.
This is particularly acute, as you usually want to see what instructions lead
to the crash.
I'm using version 9.1 but bug seems also present in 8.2.1, as distributed with
debian.
Thanks
[0]
https://stackoverflow.com/questions/26572805/gdb-tui-scroll-assembly-view-above-current-instruction
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* [Bug tui/26024] Cannot scroll up in asm view
2020-05-22 13:38 [Bug tui/26024] New: Cannot scroll up in asm view edd at theunixzoo dot co.uk
@ 2020-06-25 19:40 ` magiblot at hotmail dot com
2021-03-17 10:58 ` edd at theunixzoo dot co.uk
1 sibling, 0 replies; 3+ messages in thread
From: magiblot at hotmail dot com @ 2020-06-25 19:40 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=26024
magiblot at hotmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |magiblot at hotmail dot com
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* [Bug tui/26024] Cannot scroll up in asm view
2020-05-22 13:38 [Bug tui/26024] New: Cannot scroll up in asm view edd at theunixzoo dot co.uk
2020-06-25 19:40 ` [Bug tui/26024] " magiblot at hotmail dot com
@ 2021-03-17 10:58 ` edd at theunixzoo dot co.uk
1 sibling, 0 replies; 3+ messages in thread
From: edd at theunixzoo dot co.uk @ 2021-03-17 10:58 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=26024
Edd Barrett <edd at theunixzoo dot co.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from Edd Barrett <edd at theunixzoo dot co.uk> ---
I just tried the test case with gdb-10.1 and scroll up seems to have been fixed
(albeit with caveats, see Bug #27593).
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2020-05-22 13:38 [Bug tui/26024] New: Cannot scroll up in asm view edd at theunixzoo dot co.uk
2020-06-25 19:40 ` [Bug tui/26024] " magiblot at hotmail dot com
2021-03-17 10:58 ` edd at theunixzoo dot co.uk
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