Debugging with mingw64 impossible

[pozzugno]

I installed mingw64 under c:\mingw64.

In the compiler setting I copied "GNU GCC Compiler" configuration and renamed it to "mingw64". I changed "Compiler's installation directory" to c:\mingw64 and changed all programs (for example, C compiler is x86_64-w64-mingw32-gcc.exe).

In Settings->Debugger I copied Default configuration to a new one, renamed to mingw64. I changed the Executable path to C:\mingw64\bin\gdb.exe.

Again in Settings->Compiler I changed Debugger to mingw64.

I created a new Hello world project that uses mingw64 compiler. Compilation is fine and the program works well.

If I set a breakpoint inside a while loop and start debugging, the program halts to the breakpoint. If I press F8 (Start/Continue), the program halts again the breakpoint (it's in a while), so all is ok.

The problem happens if start debugging without any breakpoints and, during execution, I set a new breakpoint. The Debugger Log says:

Code Select Expand

Trying to interrupt process with pid: 7472; child pid: 7472 gdb pid: 7708
Continuing...


however the program will not halt anymore. It seems the debugger has lost the connection with the process. When I terminate the process, the debugger says:

Code Select Expand

[Inferior 1 (process 7464) exited with code 030000000472]
The program is not being run.
Debugger finished with status 0

This is the full log:

Code Select Expand

Active debugger config: GDB/CDB debugger:mingw64
Building to ensure sources are up-to-date
Selecting target:
Debug
Adding source dir: C:\Temp\work_git\xxx\
Adding source dir: C:\Temp\work_git\xxx\
Adding file: C:\Temp\work_git\xxx\bin\Debug\xxx.exe
Changing directory to: C:/Temp/work_git/xxx/.
Set variable: PATH=.;C:\mingw64\bin;C:\mingw64;C:\MinGW\bin;C:\MinGW;C:\Windows\System32;C:\Windows;C:\Windows\System32\wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\Users\Giuseppe\AppData\Local\Microsoft\WindowsApps

[debug]Command-line: C:\mingw64\bin\gdb.exe -nx -fullname -quiet  -args C:/Temp/work_git/xxx/bin/Debug/xxx.exe
[debug]Working dir : C:\Temp\work_git\xxx

Starting debugger: C:\mingw64\bin\gdb.exe -nx -fullname -quiet  -args C:/Temp/work_git/xxx/bin/Debug/xxx.exe
done

[debug]> set prompt >>>>>>cb_gdb:

Setting breakpoints

[debug]Reading symbols from C:/Temp/work_git/xxx/bin/Debug/xxx.exe...done.
[debug](gdb) >>>>>>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/work_git/xxx/
[debug]Source directories searched: C:/Temp/work_git/xxx;$cdir;$cwd
[debug]>>>>>>cb_gdb:
[debug]> run
[debug]Starting program: C:\Temp\work_git\xxx\bin\Debug\xxx.exe

Child process PID: 4020

[debug][New Thread 4020.0x7c8]
[debug][New Thread 4020.0x1f4c]

Trying to interrupt process with pid: 4020; child pid: 4020 gdb pid: 7756
Continuing...

[debug][New Thread 4020.0x1ecc]
[debug][Thread 4020.0x1ecc exited with code 3221225547]
[debug][Thread 4020.0x1f4c exited with code 3221225786]
[debug][Inferior 1 (process 4020) exited with code 030000000472]
[debug]>>>>>>cb_gdb:

[Inferior 1 (process 4020) exited with code 030000000472]

[debug]> break "C:/Temp/work_git/xxx/main.c:10"
[debug]Breakpoint 2 at 0x40156b: file C:\Temp\work_git\xxx\main.c, line 10.
[debug]>>>>>>cb_gdb:
[debug]> cont
[debug]The program is not being run.
[debug]>>>>>>cb_gdb:

The program is not being run.

[debug]> quit

Debugger finished with status 0


Codeblocks version is 17.12.

[pozzugno]

Ah, another thing. If I changed the Project's Compiler to GNU GCC Compiler (that points to c:\mingw that is the original 32-bits compiler), everything is fine.

[pozzugno]

Maybe the problem could be that my C::B (downloaded from here) is 32-bits and I'm debugging a 64-bits program?

[Mistahboom]

Yeah, that's probably what the issue is ^-^
Downloading from the official website is probably the safest route haha
Yes! I'm learning as well and I'm rigidly following tutorials on Youtube and random articles, that I find online. I didn't experiment with any other compiler, and the teacher I follow recommended that default compiler.

[pozzugno]

Yeah, that's probably what the issue is ^-^
Downloading from the official website is probably the safest route haha
Yes! I'm learning as well and I'm rigidly following tutorials on Youtube and random articles, that I find online. I didn't experiment with any other compiler, and the teacher I follow recommended that default compiler.

I know, but I need mingw64 to compile mbedTLS libraries (mingw32 doesn't work without patches and someone suggests mingw64 should be the toolchain to use to compile mbedTLS).

Now I don't know if it's better to try patching mbedTLS to compile with mingw32 or compiling CodeBlocks for 64-bits architecture (I don't think CodeBlocks binaries for Windows are available).

[pozzugno]

I think I've solved with -m32 compiler (and linker) option for mingw64. Of course, I set mingw32 gdb.exe as the debugger executable of mingw64 compiler.

Maybe I will create two compilers settings in C::B: "mingw64 -m32" (that creates 32-bits executables, with -m32 options) and "mingw64" (that creates 64-bits executables).