clang/test/Parser/c2x-func-prototype.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify=c2x -std=c2x %s
   2 // RUN: %clang_cc1 -Wno-strict-prototypes -fsyntax-only -verify -std=c17 %s
   3 // expected-no-diagnostics
   4
   5 // Functions with an identifier list are not supported in C23.
   6 void ident_list(a) // c2x-error {{expected ';' after top level declarator}} \
   7                       c2x-error {{unknown type name 'a'}}
   8   int a;
   9 {}                 // c2x-error {{expected identifier or '('}}
  10
  11 // Functions with an empty parameter list are supported as though the function
  12 // was declared with a parameter list of (void). Ensure they still parse.
  13 void no_param_decl();
  14 void no_param_defn() {}
  15 void (*var_of_type_with_no_param)();
  16 typedef void fn();