shell/?: gdb error

[mmaechtel]

(gdb) list
1 int main(int argc, char const *argv[])
2 {
3 int *x = 0;
4 int y = *x + 1;
5 return 0;
6 }
(gdb) b 3
Breakpoint 1 at 0x400540: file null.c, line 3.
(gdb) run
Starting program: /home/maechtel/tmp/null
/nix/store/pbs5sfnp9bfv27vz9m7h64w3zgkavfqd-perl-5.22.2/bin/perl: symbol lookup error: /nix/store/pbs5sfnp9bfv27vz9m7h64w3zgkavfqd-perl-5.22.2/bin/perl: undefined symbol: rm
[Inferior 1 (process 2263) exited with code 0177]
(gdb)

[mmaechtel]

gcc 6.3 with gdb.unwrapped seems to work ... ??

[steveej]

Can you try adding the readline pkg to the code dependencies of the shell?

EDIT: I can't reproduce this within the bsys labshell. Which environment does this happen in?

[mmaechtel]

hmmm, now it works I cannot reproduce it anymore ... maybe with my next examples, which I will try tomorrow ...

[mmaechtel]

#48

[mmaechtel]

now i can debug programs compiled with"export hardeningDisable=all" step by step. Couldn't do it without "export hardeningDisable=all"

[steveej]

I understand that for specific cases, but the symbol lookup error is not explained by optimized code.

[mmaechtel]

than I ran into other troubles before ...

[mmaechtel]

I meant step-by-step with step=line in code.

[mmaechtel]

I had this trouble even when I compiled with -g or -O0 ....

[steveej]

I think if you passed -g and/or -O0 these are overriden by the gcc wrapper if hardeningDisable=all is not set.

I'm confused about the state of this now. Do you still have any issues after setting hardeningDisable=all?

[mmaechtel]

I'm also confused but with hardeningDisable=all I think I had no troubles any more 👍