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
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