| /* Test C2x nodiscard attribute: invalid contexts. */ |
| /* { dg-do compile } */ |
| /* { dg-options "-std=c2x -pedantic-errors" } */ |
| |
| /* This attribute is not valid on types other than their definitions, |
| or on declarations other than function declarations, or on |
| statements, or as an attribute-declaration. */ |
| |
| [[nodiscard]]; /* { dg-error "ignored" } */ |
| |
| int [[nodiscard]] var; /* { dg-error "ignored" } */ |
| |
| int [[nodiscard ("reason")]] var2; /* { dg-error "ignored" } */ |
| |
| int array_with_nod_type[2] [[nodiscard]]; /* { dg-error "ignored" } */ |
| |
| void fn_with_nod_type () [[nodiscard]]; /* { dg-error "ignored" } */ |
| |
| int z = sizeof (int [[__nodiscard__]]); /* { dg-error "ignored" } */ |
| |
| [[nodiscard]] typedef int nod_int; /* { dg-error "can only be applied" } */ |
| |
| [[nodiscard]] int nvar; /* { dg-error "can only be applied" } */ |
| |
| struct s { int a; }; |
| |
| [[nodiscard]] typedef struct s nod_s; /* { dg-error "can only be applied" } */ |
| |
| struct t { [[nodiscard]] int b; }; /* { dg-error "can only be applied" } */ |
| |
| enum e { E [[nodiscard]] }; /* { dg-error "can only be applied" } */ |
| |
| void fx ([[nodiscard]] int p); /* { dg-error "can only be applied" } */ |
| |
| void |
| f (void) |
| { |
| int a; |
| [[nodiscard ("reason")]] int b = 1; /* { dg-error "can only be applied" } */ |
| [[nodiscard]]; /* { dg-error "ignored" } */ |
| [[nodiscard]] a = 1; /* { dg-error "ignored" } */ |
| } |