http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46005
Summary: Don't allow "auto" as the simple-type-specifier of a typedef Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: schaub-johan...@web.de The following is ill-formed, but GCC allows it typedef auto autot; And it seems GCC itself can't handle it autot t = 0; // variable has incomplete type!? Neither does the Standard specify how it should be handled (it only talks about auto type specifiers, as opposed to "auto" being the type designated semantically. There is no semantic equivalent for "auto" it seems). In Standard C++, something like "autot t = 0;" can't occur, I think.