At 5:57 PM +0000 2001/06/15, Vital Cruvinel Ferreira wrote:
>I used the pragma options below and the sizeof (T) returns the size
>expected, but I can't use it (it causes an error at run time). The code
>is:
>
>#pragma options align=packed
>typedef struct {
> UInt8 size8 : 8;
> UInt16 size16 : 16;
> UInt32 size32 : 32;
>} T;
>#pragma options align=reset
>
>T t;
>t.size8 = 3; // ok
>t.size16 = 5; // runtime error
This would be a compiler bug. Disassemble the function and check to see if the
generated code isn't taking the packing restriction into account, substituting
multiple byte operands for word operands.
Are you using CodeWarrior or some other compiler? Verify "#pragma options
align=packed" and "#pragma options align=reset" are supported by your compiler.
Regards,
Jim Schram
Palm Incorporated
Partner Engineering
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