DOS ain't dead

UPX and Freepascal 3.x binaries (Announce)

posted by Laaca , Czech republic, 25.07.2026, 16:53

> Hm, UPX team will not adjust the code to support the FPC 3.x binaries
> because it is just a bug of FPC.
> However, I think, if is it only some minor problem in the COFF header it
> should be able to relatively easy to modify such incorrect DOS/COFF header.


Well, it was not so easy. I had to do it with AI assistance and even with that it had a number iterations.
But it is here FixFPC3

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DOS-u-akbar!

Complete thread:

• UPX and Freepascal 3.x binaries - Laaca, 15.07.2026, 08:07 (Announce)
  • UPX and Freepascal 3.x binaries - Laaca, 23.07.2026, 20:56
    • UPX and Freepascal 3.x binaries - marcov, 24.07.2026, 22:16
    • UPX and Freepascal 3.x binaries - Laaca, 25.07.2026, 16:53