Here is the faulty program (this kind of code is generated by http://www.swig.org): /////////// Start /////////// #include <stdio.h> int main(void) { long long a = 0x77777777L; long long b = 0; void ** aa=(void **)(void *)&a; void ** ab=(void **)(void *)&b; *ab = *aa; printf("in: %llX, out: %llX\n", a, b); return 0; } /////////// End /////////// The output for the following version is: (Debian 1:3.3.6-12) g++ in: 77777777, out: 77777777 (Debian 1:3.3.6-12) g++ -O1 in: 77777777, out: 77777777 (Debian 1:3.3.6-12) g++ -O2 in: 77777777, out: 77777777 (Debian 4.0.2-9) g++ in: 77777777, out: 77777777 (Debian 4.0.2-9) g++ -O1 in: 77777777, out: 77777777 (Debian 4.0.2-9) g++ -O2 in: 77777777, out: 0 So there is something wrong with g++ -O2 (Debian 4.0.2-9). Is this program wrong or is this a bug ? Regards, Jerome
