Hi Mathias, > The scenario is > > terminal a, b, c, r; > > auto tmp = a*b*c; > r = tmp + tmp; > > Assuming everything is held by reference, when used in r, tmp will > refer to a dangling reference (the a*b node).
This is asking for trouble I think. What about using something like boost::phoenix::let, to explicitly say we have a common subexpression? Like r = let( tmp = a*b*c )[ tmp + tmp ]; BTW, I remember there was a discussion about "explicit auto" - was there any movement in that direction? It could give some protection here... Thanks, Maxim _______________________________________________ proto mailing list proto@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/proto
