[fpc-pascal] FPC 2.6.2 for DOS/Go32V2 FP.EXE cannot run a second time

[Lubomír Čabla]

FPC 2.6.2 for DOS/Go32V2

There is the fatal IDE unstability in FPC 2.6.2 under pure DOS.

IDE almost always starts only first time (after installation or reboot).
I start the IDE, compile and run the program (e.g. Hello.pas) and close
IDE. But when I want to start IDE again it crashes with SIGSEGV message.

 Exiting due to signal SIGSEGV
 FPC General Protection Fault at eip=006EDE95
 eax=65672D6C ebx=0000002A ecx=00000088 edx=00000000 esi=008E91F8
edi=0083B504
 ebp=008C0CA0 esp=008C0C90 program=C:\PP\BIN\GO32V2\FP.EXE
 cs: sel=00A7 base=00400000 limit=008EFFFF
 ds: sel=00AF base=00400000 limit=008EFFFF
 es: sel=00AF base=00400000 limit=008EFFFF
 fs: sel=00C7 base=00000000 limit=0010FFFF
 gs: sel=00C7 base=00000000 limit=0010FFFF
 ss: sel=00AF base=00400000 limit=008EFFFF

 Call frame traceback EIPs:
 $006EDE95
 $005BD905
 $005BCD84
 $005BC83D
 $005BC7F8
 $00308AF8
 $0030B9F4
 $0002DB50
 $0002DC5A
 $00002040

To be able to start IDE again in DOS I have to reboot the computer.
I think IDE set something in memory and warm restart does not erase the
memory contents.

Compilation from command prompt with FPC.EXE works everywhere.
But IDE is good for debugging and help.

Can someone please help me or advise what I'm doing wrong.

The main problem is running IDE in pure DOS.

Thank you.
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