Hi Eric, On Fri, Jul 29, 2011 at 7:04 PM, Eric Niebler <eric@boostpro.com> wrote:

On 7/29/2011 12:52 PM, Fernando Pelliccioni wrote:

...

Hi Eric, hi all,

I'm getting the following errors when I try to compile the example in the atteched file.

test_proto_145.cpp: In function ‘int main()’: test_proto_145.cpp:91: error: no match for ‘operator<<’ in ‘emergency << 1’

I am using Boost 1.45 and GCC 4.4.5 This works fine in 1.46.0 and above.

Is there a patch ?

If upgrading Boost isn't an option, you have have a couple of other work-arounds. First, you can replace the proto/operators.hpp with the attached.

The attached file is the same as Boost 1.45. Could I replace proto/operators.hpp with the file of the version 1.46.0, 1.46.1 or 1.47 ?

Or, you can change your LevelGrammar to accept other terminal types, like:

struct LevelGrammar : boost::proto::or_< LevelTerminals , boost::proto::terminal<boost::proto::_> , boost::proto::shift_left< LevelGrammar , boost::proto::not_< LevelTerminals > >

...

{};

This works great! Thank you so much. Fernando.