Re: shifts on 64bit ints

	First, I would suggest that you use a printf format like "%08x"
for better legibility.

	Second, I tried your example with gcc-2.95.2 on PowerPC AIX
gcc-2.95.2 on PowrePC Linux, and a recent development snapshot of GCC with
various optimization levels (you did not specify what options you used to
compile the testcase) and I consistently saw the following output:

Mask 29 is 0x0000000020000000 - 0xffffffffdfffffff
Mask 30 is 0x0000000040000000 - 0xffffffffbfffffff
Mask 31 is 0x0000000080000000 - 0xffffffff7fffffff
Mask 32 is 0x0000000100000000 - 0xfffffffeffffffff
Mask 33 is 0x0000000200000000 - 0xfffffffdffffffff
Mask 34 is 0x0000000400000000 - 0xfffffffbffffffff

	You appear to have a problem, but it is local to your system
(could be toolchain or C library as well).

David

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