Etienne Gagnon writes: > > Now that my proposal has been criticised to death on the smallest > nitpicks of pure ISO C portability, let me comment on the portability > ]of your code. > > > The ISO C standard says: > > [#6] Any pointer type may be converted to an integer type; > the result is implementation-defined. If the result cannot > be represented in the integer type, the behavior is > undefined. The result need not be in the range of values of | > any integer type. > > So, the conversion of "p" to "jlong" or "jint" yields a *compiler-specific* > value; ISO C does not guarantees anything about the actual value resulting > from the cast. In other words, a compiler would be allowed to change > the bits of the pointer value when converting.
Exactly: the only reliable way I can see to do this is to use memcpy() from the big pointer to a byte array. But, compared to the overhead of a JNI call, that is no big deal. Andrew. _______________________________________________ Classpath mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/classpath
