For now, this will prevent the NONNULLxxx arguments from being
defined under a djgpp compiler or crosscompiler.
paxed reported a segfault under msdos:
nethack.exe
Exiting due to signal SIGSEGV
Page fault at eip=000c3f8c, error=0004
eax=00000000 ebx=00000000 ecx=00000000 edx=0000000f esi=00000000 edi=00000001
ebp=00589988 esp=00589970 program=C:\NH370\NETHACK.EXE
cs: sel=00a7 base=00400000 limit=0063ffff
ds: sel=00af base=00400000 limit=0063ffff
es: sel=00af base=00400000 limit=0063ffff
fs: sel=008f base=00001a20 limit=0000ffff
gs: sel=00bf base=00000000 limit=0010ffff
ss: sel=00af base=00400000 limit=0063ffff
App stack: [00589ba8..00389ba8] Exceptn stack: [00389af4..00387bb4]
Call frame traceback EIPs:
0x000c3f8c _read_config_file+19
0x0017619f _initoptions_finish+577
0x00176371 _initoptions+157
0x0025cec4 _pcmain+365
0x0025d8d9 _main+41
He was able to 'git bisect' to the macro definitions change,
and confirmed that the segfault no longer occurs after this commit.
There may be further investigation on this later.
088717ccec