required hack for Xeon 64

Hi again.

I just wanted to share some modifications to the core-8.4-branch code I had
to make in order to avoid the following message :

---------------------------

Run-Time Check Failure #1 - A cast to a smaller data type has caused a loss
of data. If this was intentional, you should mask the source of the cast
with the appropriate bitmask. For example:

char c = (i & 0xFF);

Changing the code in this way will not affect the quality of the resulting
optimized code.

----------------------------

This concerns MSVC 8.0 and Windows xp64 (MACHINE=0x64). The changes are, as
suggested above, to perform a 0xFF on various ints in tclCompile.h. :

#define TclStoreInt4AtPtr(i, p) \

*(p) = (unsigned char) (0xFF & ((unsigned int) (i) >> 24)); \

*(p+1) = (unsigned char) (0xFF & ((unsigned int) (i) >> 16)); \

*(p+2) = (unsigned char) (0xFF & ((unsigned int) (i) >> 8)); \

*(p+3) = (unsigned char) (0xFF & ((unsigned int) (i)))



the same goes for TclEmitInstInt4.

Perhaps this would be an issue for 8.5 as well.



Regards,

Anders.

I c


.

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