http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49380
Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |NEW Known to work| |4.5.3 Summary|[4.6 Regression] Several |[4.6/4.7 Regression] |packages fail to link when |Several packages fail to |building with GCC4.6 |link when building with |(amarok 1.4, FreeCAD) |GCC4.6 (amarok 1.4, | |FreeCAD) --- Comment #13 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-06-13 11:24:30 UTC --- You can obtain preprocessed source by appending -save-temps to the GCC command-line that builds a file. Compared to 4.5, 4.6 creates a reference to Bar::foo instead of ::foo for void foo (int); namespace Bar { void bar (int); }; void Bar::bar(int i) { extern void foo (int); foo (i); } Not sure if that is what is expected (thus, wrong in 4.5 and good in 4.6) or not. It doesn't seem possible to qualify the local extern decl so that ::foo is picked up. Supposedly one should use 'using ::foo' instad of a local extern declaration.