DOS ain't dead - OpenWatcom 1.7a RC1 released

Rugxulo

Usono,
08.10.2007, 20:55

OpenWatcom 1.7a RC1 released (Announce)

The OpenWatcom developers have released 1.7a RC1 on 6 October 2007.

Website: http://www.openwatcom.org

Changes:

> This version fixes an obscure but significant regression in 1.7
> relative to 1.6. It contains no new features or bug fixes compared
> to 1.7.

(Anybody have any clue what this actually means??) :confused:

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Know your limits.h

lucho 09.10.2007, 08:00 @ Rugxulo	OpenWatcom 1.7a RC1 released Post reply
	> > This version fixes an obscure but significant regression in 1.7 relative > > to 1.6. It contains no new features or bug fixes compared to 1.7. > > (Anybody have any clue what this actually means??) This means that 1.7 had introduced a bug not present in 1.6, and 1.7a fixes it. For more info, see http://en.wikipedia.org/wiki/Regression_testing

Steve US, 09.10.2007, 09:00 @ lucho	OpenWatcom 1.7a RC1 released Post reply
	> This means that 1.7 had introduced a bug not present in 1.6, and 1.7a > fixes it. OK. What bug?

Japheth

Germany (South),
09.10.2007, 10:46

@ Steve

OpenWatcom 1.7a RC1 released

Post reply

> OK. What bug?

IIRC it started in the OW C/C++ newsgroup with thread

OW 1.7 Bug (may be major):

#define TYPEFLAG(f, t) (((f)&(0xFFFF0001))==(t)) The disassembly shows it doing and eax,0x00000001 instead of and eax,0xFFFF0001 0FC7 8B 44 24 10 mov eax,dword ptr 0x10[esp] 0FCB 25 01 00 00 00 and eax,0x00000001 if (TYPEFLAG(flags, 0x00010001)) { .. whatever.. }

IIRC it was introduced by Bart Oldeman doing an adjustment for the 16-bit code generator.

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MS-DOS forever!