From: [email protected]
Subject: LLDB step over command
Date: Wed, 12 May 2021 21:58:31 +0300
> Hello
>
> Im on 6.9 release amd64. Switched to clang and lldb since gcc and gdb are not
> in base anymore. My problem is during debugging for some functions
> command "next/step-over" behaves like "step/step-in".
>
> example code (just for illustration purpose):
> #include<stdlib.h>
> #include<string.h>
>
> int main()
> {
> int a = 5, b;
> void *p = malloc(sizeof(int));
> memcpy(p, (void *)&a, sizeof(int));
> b = *(int *)p;
> return b;
> }
>
> compiled with:
> cc -g -Weverything -ansi -pedantic -O0 -o moveint moveint.c
>
> below is the snippet from session where lldb goes into malloc instead of
> step over it.
> ...
> -> 7 void *p = malloc(sizeof(int));
> ^
> 8 memcpy(p, (void *)&a, sizeof(int));
> 9 b = *(int *)p;
> 10 return b;
> (lldb) next
> Process 18050 stopped
> * thread #1, stop reason = step over failed (Could not create return address
> breakpoint. Return address (0x43eae9c89bd) permissions not found.)
> frame #0: 0x0000043eae9c8ad0 moveint`malloc
> moveint`malloc:
> -> 0x43eae9c8ad0 <+0>: movq 0x11c9(%rip), %r11
> 0x43eae9c8ad7 <+7>: callq 0x43eae9c8a40
> 0x43eae9c8adc <+12>: jmp 0x43eae9c8a32
> 0x43eae9c8ae1 <+17>: pushq $0x4
> ...
>
> How should I deal with this?
I have same problem on my OpenBSD 6.9 release amd64 box. However, next
command of lldb is working fine on my OpenBSD 6.9 current amd64 box.
The lldb has been updated to 11.1.0 on OpenBSD current. Can you update
to current your OpenBSD box by
https://cdn.openbsd.org/pub/OpenBSD/snapshots/amd64/?
> Thanks,
> Serge.
>
--
ASOU Masato
