CPU-View freezes the IDE (GDB only!)

[fibodevy]

1. Set the debugger to GDB! FpDebug works fine.
2. Create a new project (Simple Program).
3. Code:

{$mode objfpc}
begin
  WriteLn(1); // place a breakpoint here
end.

4. Start the program with debugging.
5. Open CPU-View. The IDE freezes.

---

Initially I thought this was caused by my local modifications to the IDE/FPC source, but I was able to reproduce the issue on a clean setup: fresh FPC/Lazarus trunk installed via fpcupdeluxe, then the latest CPUView + FWHexView from GitHub. The entire IDE freezes and the only way out is to kill the processes manually (Lazarus -> GDB -> debugged program).

My setup is Windows 10 x64.

[AlexanderBagel]

It looks like some changes have been made to Ide, but I can't look into this right now because I'm on a business trip. I'll be back in May and will take a look then.

[AlexanderBagel]

This is very, very strange. I was able to reproduce the freeze, and it occurs when sending a command to GDB (a deadlock on WriteFile). What’s more, this freeze also occurs on a year-old version of Lazarus. Actually, the Windows+GDB mode was the very first one I developed, and everything worked perfectly there. After finishing that, I made a version for Linux x86-64, followed by the third stage for ARM64 (AArch64). In a few weeks, I’ll be home and will test it on the computer I used for development, but for now, I can’t even begin to guess what exactly might have gone wrong or how it happened.