DOS ain't dead

Not widely known problem in programming? (Developers)

posted by tkchia , 28.03.2021, 08:02

Hello ecm, hello Laaca,

> I'd call this a type of "use after free".

Yep, me too. The program is effectively using memory after it is considered "freed" back to the system.

Apparently AddressSanitizer can sometimes detect such "stack use after return" bugs. But I am not sure if AddressSanitizer works (or can be made to work) with Free Pascal, or even with 32-bit DPMI.

Thank you!

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https://gitlab.com/tkchia · https://codeberg.org/tkchia · 😴 "MOV AX,0D500H+CMOS_REG_D+NMI"

Complete thread:

• Not widely known problem in programming? - Laaca, 27.03.2021, 20:06 (Developers)
  • Not widely known problem in programming? - ecm, 27.03.2021, 20:30
    • Not widely known problem in programming? - tkchia, 28.03.2021, 08:02
      • Not widely known problem in programming? - marcov, 28.03.2021, 17:44
      • Not widely known problem in programming? - bretjohn, 29.03.2021, 20:03
        • Not widely known problem in programming? - Laaca, 29.03.2021, 22:24
          • Not widely known problem in programming? - bretjohn, 29.03.2021, 23:02
            • Not widely known problem in programming? - marcov, 30.03.2021, 12:05
        • Not widely known problem in programming? - ecm, 29.03.2021, 22:26
  • Not widely known problem in programming? - ecm, 28.03.2021, 21:52
    • Not widely known problem in programming? - Laaca, 29.03.2021, 05:04