clang/test/Sema/vfprintf-valid-redecl.c

   1 // RUN: %clang_cc1 %s -fsyntax-only -pedantic -verify -std=c99
   2 // RUN: %clang_cc1 %s -fsyntax-only -pedantic -verify -DPREDECLARE -std=c99
   3
   4 #ifdef PREDECLARE
   5 // PR16344
   6 // Clang has defined 'vfprint' in builtin list. If the following line occurs before any other
   7 // `vfprintf' in this file, and we getPreviousDecl()->getTypeSourceInfo() on it, then we will
   8 // get a null pointer since the one in builtin list doesn't has valid TypeSourceInfo.
   9 int vfprintf(void) { return 0; } // expected-warning {{requires inclusion of the header <stdio.h>}}
  10 #endif
  11
  12 // PR4290
  13 // The following declaration is compatible with vfprintf, so we shouldn't
  14 // reject.
  15 int vfprintf(); // expected-warning {{a function declaration without a prototype is deprecated in all versions of C}}
  16 #ifndef PREDECLARE
  17 // expected-warning@-2 {{requires inclusion of the header <stdio.h>}}
  18 #endif