Faheem Mitha <faheem@email.unc.edu> writes:

Hi,

The following bit of code using Boost Function compiles fine with gcc 3.3 or later, but has problems with the Intel C++ compiler version 9.1, which produces the following error message.

Is this a compiler bug, or is there something wrong with the code?

Looks like a compiler bug.

If the former, I'd be grateful for suggestions of a workaround

Maybe boost::function<int()> choice(&rchoice<dim>); or boost::function<int()> choice(rchoice<dim>); or int (*pf)() = &rchoice<dim>; boost::function<int()> choice(pf); or int (*pf)() = rchoice<dim>; boost::function<int()> choice(pf);

Note that the corresponding version with no templates compiles without problems.

**************************************************************************

icpc -o foo.o -c -Wall -Werror -g -wd383,810,981,1418 cxxlib-icc -DBOOST_RAND -I/usr/local/include/boost-1_33_1 \foo.cpp

foo.cpp(12): error: no operator "=" matches these operands operand types are: boost::function<int (), std::allocator<void>> = <unknown-type> choice = &rchoice<dim>; ^ ************************************************************* #include <boost/function.hpp>

template<int dim> int rchoice() { return 1; }

template<int dim> int foo(void) { boost::function<int ()> choice; choice = &rchoice<dim>; return choice(); }

int main() { return foo<2>(); } ***************************************************************

-- Dave Abrahams Boost Consulting www.boost-consulting.com