IMHO, it should only cause a warning for the 32-bit case, and the difference should be ingored in 16-bit, because they are the same size. Note that in 32-bit DJGPP, long can go to int without any warnings, even with -Wall.
On Thu, Feb 26, 2009 at 3:55 PM, Alain M. <ala...@pobox.com> wrote: > Christian Masloch escreveu: >>>> You can cast a short to an int, an the conversion in ok, but to cast a >>>> short* to an int* will bring in 2 extra bytes and an INVALID POINTER... >>> no short * and int * are the exact same size in 16-bit compilers (try >>> compiling a test program which prints sizeof(int), sizeof(short). For >>> some reason openwatcom thinks it's an error. >> >> I don't know why "unsigned short" to "unsigned int" should be an error if >> they're the same size (probably so code doesn't get unportable due to >> this?), but the new OW 1.8 had changes regarding both _dos_allocmem and >> _dos_getftime. These either caused the warnings or they solved them (if >> they occured in 1.7) but I think the former: > > Ok, I allways use OW for 32 bit programs... for 16 bit it is ok, but at > least not recomended. > > Using the link in the other message I found this, which plainly explains > how this problem came around: > > * The date and time arguments to _dos_getftime() and > _dos_setftime() are now using 'unsigned int' type instead of 'unsigned > short'. This change has been made to improve compatibility with other > compilers. > > * The segment argument used with _dos_allocmem(), _dos_freemem() > and _dos_setblock() is now unsigned int instead of unsigned short. This > change was made for compatibility with other compilers. > > A fix for this would requide conditionals based no the compiler > version... really not nice at all :( > > Alain > > ------------------------------------------------------------------------------ > Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA > -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise > -Strategies to boost innovation and cut costs with open source participation > -Receive a $600 discount off the registration fee with the source code: SFAD > http://p.sf.net/sfu/XcvMzF8H > _______________________________________________ > Freedos-devel mailing list > Freedos-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-devel > ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
