I filed 1070, failure to build 22.locale.collate.cpp on Linux with gcc 4.7.1. Gcc, Comeau and Clang fail to compile it, Intel and Sun are fine. It looks to me like Intel and Sun compilers are not doing the right thing. A small test case and a patch have been attached. The failing code has been reduced to:
$ cat test.cpp; g++ -c test.cpp template < class charT > void f () { g (charT ('a')); } template < class charT > void g (charT) { } int h () { return f< char > (), 0; } test.cpp: In instantiation of 'void f() \[with charT = char\]': test.cpp:14:23: required from here test.cpp:4:5: error: 'g' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation \[-fpermissive\] test.cpp:8:6: note: 'template<class charT> void g(charT)' declared here, later in the translation unit Liviu