jonas at zeus.ugent.be
Sat Aug 14 23:59:55 CEST 2004
On 14 aug 2004, at 21:07, Mattias Gaertner wrote:
>> The GetOrdProp is used to read boolean values. It reads a longint and
>> applies "and $ff" to get only the lowest byte. Under PowerPC the
>> value is stored just like under i386 in the first byte. Reading the
>> longint under i386 works, but of course it does not under powerpc.
>> So, either the compiler is wrong or the GetOrdValue function is wrong.
>> Which one should I report?
> I just found out, that this is also the case for ShortInt, SmallInt,
> and Byte, but not for enums.
To me, the fact that it always reads a longint regardless of the size
of the property seems to be inherently wrong. What if the last field of
a class is a byte? Then you can read past the end of the class,
possibly into unallocated memory causing a crash, no?
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