clang/test/Sema/warn-main.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2 // RUN: not %clang_cc1 -fsyntax-only -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s
   3 // RUN: not %clang_cc1 -fsyntax-only -fdiagnostics-parseable-fixits -x c++ %s 2>&1 | FileCheck %s
   4
   5 // expected-note@+1 2{{previous definition is here}}
   6 int main(void) {
   7   return 0;
   8 }
   9
  10 // expected-error@+2 {{static declaration of 'main' follows non-static declaration}}
  11 // expected-warning@+1 {{'main' should not be declared static}}
  12 static int main(void) {
  13 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:1-[[@LINE-1]]:8}:""
  14   return 0;
  15 }
  16
  17 // expected-error@+2 {{redefinition of 'main'}}
  18 // expected-error@+1 {{'main' is not allowed to be declared inline}}
  19 inline int main(void) {
  20 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:1-[[@LINE-1]]:8}:""
  21   return 0;
  22 }
  23
  24 // expected-warning@+5 {{function 'main' declared 'noreturn' should not return}}
  25 // expected-warning@+2 {{'main' is not allowed to be declared _Noreturn}}
  26 // expected-note@+1 {{remove '_Noreturn'}}
  27 _Noreturn int main(void) {
  28 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:1-[[@LINE-1]]:11}:""
  29   return 0;
  30 }
  31
  32 // expected-warning@+1 {{'main' is not allowed to be declared variadic}}
  33 int main(int argc, char**argv, ...) { return 0; }