1 // PR c++/26068 2 3 extern "C" auto int a; // { dg-error "linkage|two or more data types" } 4 extern "C" register int b; // { dg-error "linkage" } 5 extern "C" static void c(); // { dg-error "linkage" } 6 extern "C" extern void d(); // { dg-error "linkage" } 7 extern "C" mutable int e; // { dg-error "linkage" } 8 9 extern "C" { 10 static void f(); 11 } 12