Hi Arkadiy, When BOOST_TYPEOF_NATIVE is defined, the following code does not compile, and this is precisely what I want to do. template struct my_struct { typedef BOOST_TYPEOF_TPL( T1()+T2() ) type; }; When BOOST_TYPEOF_NATIVE is not defined, including boost/typeof/std/complex.hpp produces the error message typeof/std/complex.hpp", line 15.2: 1540-0130 (S) "BOOST_TYPEOF_REGISTER_TEMPLATE_PARAM_PAIR" is not declared. There might be a simple trick to avoid this problem? Thanks, Karl Arkadiy Vertleyb wrote:

"Karl Meerbergen" wrote

...

Looking at the regression test results, it seems that some typeof tests do not compile on IBM. Did somebody have a look at this? Is this a known problem?

Typeof is a new library, it has not been ported to IBM, and there are no immediate plans of doing this. But the native mode seems to mostly work, so you may want to use it for now, just define BOOST_TYPEOF_NATIVE.

Regards, Arkadiy

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Arkadiy Vertleyb wrote:

"Karl Meerbergen" wrote

...

When BOOST_TYPEOF_NATIVE is defined, the following code does not compile, and this is precisely what I want to do.

...

template struct my_struct { typedef BOOST_TYPEOF_TPL( T1()+T2() ) type; };

What is the error message? Do you have the same problem if you use __typeof__ directly?

typeofsample.cpp", line 5.3: 1540-0132 (S) The expression must be a constant expression. Line 5 is: typedef BOOST_TYPEOF_TPL( T1()+T2() ) type; When I use __typeof__, I get the message: The text "+" is unexpected. When I do not define BOOST_TYPEOF_NATIVE, all works fine for integral and float and double types. It is a good basis to start for me, but I would have hoped to be able to get further. Thanks for your help. Karl