Author Topic: Can't debug even a Hello world program  (Read 1247 times)

Offline dwaindibbley

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Can't debug even a Hello world program
« on: May 12, 2021, 01:46:59 pm »
My problem is that in Windows, I can no longer debug a program. It worked before, I think I fixed it, something perhaps to do with paths with spaces, now its not working. First I re-installed 20.03 CodeBlocks, then I tried just the hello world command line example as follows.

#include <stdio.h>
#include <stdlib.h>

int main()
{
    printf("Hello world!\n");
    return 0;
}
If I set a breakpoint on the printf and start debugging I get the following in the debug window

Setting breakpoints

[debug]>>>>>>cb_gdb:
[debug]> show version
[debug]GNU gdb (GDB) 8.1
[debug]Copyright (C) 2018 Free Software Foundation, Inc.
[debug]License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
[debug]This is free software: you are free to change and redistribute it.
[debug]There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
[debug]and "show warranty" for details.
[debug]This GDB was configured as "x86_64-w64-mingw32".
[debug]Type "show configuration" for configuration details.
[debug]For bug reporting instructions, please see:
[debug]<http://www.gnu.org/software/gdb/bugs/>.
[debug]Find the GDB manual and other documentation resources online at:
[debug]<http://www.gnu.org/software/gdb/documentation/>.
[debug]For help, type "help".
[debug]Type "apropos word" to search for commands related to "word".
[debug]>>>>>>cb_gdb:
[debug]> set confirm off

Debugger name and version: GNU gdb (GDB) 8.1

[debug]>>>>>>cb_gdb:
[debug]> set width 0
[debug]>>>>>>cb_gdb:
[debug]> set height 0
[debug]>>>>>>cb_gdb:
[debug]> set breakpoint pending on
[debug]>>>>>>cb_gdb:
[debug]> set print asm-demangle on
[debug]>>>>>>cb_gdb:
[debug]> set unwindonsignal on
[debug]>>>>>>cb_gdb:
[debug]> set print elements 200
[debug]>>>>>>cb_gdb:
[debug]> set new-console on
[debug]>>>>>>cb_gdb:
[debug]> set disassembly-flavor att
[debug]>>>>>>cb_gdb:
[debug]> catch throw
[debug]Catchpoint 1 (throw)
[debug]>>>>>>cb_gdb:
[debug]> directory C:/temp/test_debug/
[debug]Source directories searched: C:/temp/test_debug;$cdir;$cwd
[debug]>>>>>>cb_gdb:
[debug]> break "C:/temp/test_debug/main.c:6"
[debug]Breakpoint 2 at 0x401559: file C:\temp\test_debug\main.c, line 6.
[debug]>>>>>>cb_gdb:
[debug]> run
[debug]Starting program: C:\temp\test_debug\bin\Debug\test_debug.exe

Child process PID: 7612

[debug][New Thread 7612.0x2980]
[debug][New Thread 7612.0x1e3c]
[debug]Thread 1 hit Breakpoint 2, main () at C:\temp\test_debug\main.c:6
[debug]C:\temp\test_debug\main.c:6:58:beg:0x401559
[debug]>>>>>>cb_gdb:

At C:\temp\test_debug\main.c:6

[debug]> show language
[debug]The current source language is "auto; currently c".
[debug]>>>>>>cb_gdb:
[debug]> info locals
[debug]No locals.
[debug]>>>>>>cb_gdb:
[debug]> info args
[debug]No arguments.
[debug]>>>>>>cb_gdb:
[debug]> if 1
disassemble 0x401559
info frame
end

[debug] >
[debug] > >
[debug]Dump of assembler code for function main:
[debug]   0x0000000000401550 <+0>:   sub    $0x28,%rsp
[debug]   0x0000000000401554 <+4>:   callq  0x401620 <__main>
[debug]=> 0x0000000000401559 <+9>:   lea    0x2aa0(%rip),%rcx        # 0x404000
[debug]   0x0000000000401560 <+16>:   callq  0x402a50 <puts>
[debug]   0x0000000000401565 <+21>:   mov    $0x0,%eax
[debug]   0x000000000040156a <+26>:   add    $0x28,%rsp
[debug]   0x000000000040156e <+30>:   retq   
[debug]End of assembler dump.

Debugger finished with status 1

And after a couple of seconds it throws the "Debugger Finished with status 1" no matter what I try to do. Only thing I can think of is something has become corrupt in the configuration files. I have noticed it is a bad idea to try to use a Linux config on windows so now use seperate configs. I have googled this issue but not found an answer!


Offline oBFusCATed

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Re: Can't debug even a Hello world program
« Reply #1 on: May 12, 2021, 04:25:53 pm »
The debugger shipped with 20.03 is known to be broken.
Search the forum for topics about working debuggers...
(most of the time I ignore long posts)
[strangers don't send me private messages, I'll ignore them; post a topic in the forum, but first read the rules!]

Offline dwaindibbley

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Re: Can't debug even a Hello world program
« Reply #2 on: May 13, 2021, 05:53:40 am »
Will do, thanks for the prompt reply

Online AndrewCot

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Re: Can't debug even a Hello world program
« Reply #3 on: May 13, 2021, 09:36:00 am »
It would be quicker to just grab the latest nightly build and use it.

Offline Miguel Gimenez

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Re: Can't debug even a Hello world program
« Reply #4 on: May 13, 2021, 10:16:16 am »
The debugger is external to the nightly, so it will use whatever debugger you have previously.