OS: Windows 11 Pro 24H2
IDE: RAD Studio 12.2 Patch 2

New test project, 32-bit console application:

#include <iostream>
#include <tchar.h>

int _tmain(int argc, _TCHAR* argv[])
{
  char txt[100][50];

  printf("Hello World!");
}

If I uncomment the array txt, all is fine. If I switch to 64-bit, all is fine. Does somebody have an idea why this array doesn't work in 32-bit?

OS: Windows 11 Pro 24H2
IDE: RAD Studio 12.2 Patch 2

New test project, 32-bit console application:

#include <iostream>
#include <tchar.h>

int _tmain(int argc, _TCHAR* argv[])
{
  char txt[100][50];

  printf("Hello World!");
}

If I uncomment the array txt, all is fine. If I switch to 64-bit, all is fine. Does somebody have an idea why this array doesn't work in 32-bit?

• c++
• c++builder
• c++builder-12-athens

• 2 This looks like a bug in C++ Builder 12. I would ask the embarcadero support. – jabaa Commented Feb 17 at 11:40
• The flip side is that I think static analysis tools wouldn't like the size of that array being on the stack. – sweenish Commented Feb 17 at 17:21
• I can't reproduce a crash using 12.2 Patch 2 on Win10, with or without the array present. What are the EXACT steps from beginning to end, including configurations, etc to reproduce the crash? – Remy Lebeau Commented Feb 18 at 17:41
• Just to help: We have compiled this code from RAD Studio 12.2 using clang64x, clang64, clang32, Classic - all done using "debug" settings. Works fine for all four. – Roger Cigol Commented 2 days ago

1 Answer 1

This works for me:

Answer from Embarcadero Support:

If you logged a support case about the IDE closing while debugging, (I presume this is on 12.2) I would have told you to do the follow:

• Shut the IDE down.
• run regedit
• goto this key: HKEY_CURRENT_USER\Software\Embarcadero\BDS\23.0\Debugging
• add a string entry (if it is not there ) called HighlightDebugWindows and then set the value to False
• now start the IDE and see if the same problem occurs.