1 // Test that "nonnull" attribute works for C++. 2 // Origin: Joseph Myers <jsm@polyomino.org.uk> 3 // { dg-do compile } 4 // { dg-options "-Wall" } 5 6 // The "nonnull" attribute is thoroughly tested for C, so here we 7 // simply test that it works at all, as at one point the relevant 8 // checking code was only called for C. 9 10 extern void f (char *) __attribute__((nonnull)); 11 12 void g()13g () 14 { 15 f (0); // { dg-warning "null" "null argument" } 16 } 17