AV in latest FastMM4-AVX trunk with C++Builder x32 project

Question

AV in latest FastMM4-AVX trunk with C++Builder x32 project

MaxTerentiev opened this issue 3 years ago · 7 comments

Hi,
I found new problem with latest FastMM4-AVX:

After you fix AV with Delphi x64 project I start getting new AVs with C++Builder x32 project ! It was works fine with previous FastMM-AVX version ! C++Builder x64 project also works fine, so new problem only in x32 mode.

Attached error screenshot and also debugger screenshot with call stack and line number.

Answer 1 · 2021-06-18T12:59:42.000Z

I also get "Invalid floating point operation" error time to time and debugger stops at this line (see attached screenshot). This happens also with Delphi/CBuilder x32 projects and works fine with Delphi/CBuilder x64. This happens then I close TDBISAMTable. Because its commercial component - I can't publish example project in public (but can send directly to you somehow as .dcu's).

Answer 2 · 2021-06-18T14:17:33.000Z

Thank you! I will take care of this.

Answer 3 · 2021-06-18T15:57:59.000Z

What was the commit date of the last version that worked?

Answer 4 · 2021-06-18T18:45:51.000Z

Last version fully working in both x32 and x64 in delphi and bcb attached.
FastMM4.zip

Answer 5 · 2021-06-22T19:06:55.000Z

Fixed in the recent commit, thank you!

Answer 6 · 2021-06-22T19:07:42.000Z

This is the commit that fixes it: 21b9838

Answer 7 · 2021-06-22T19:15:28.000Z

The error was caused by improper handling of 8-byte alignment. You can specify 16-byte or 32-byte alignment to fix this problem without even taking the previous commit. Sorry for that!