clang/test/Sema/thread_local.c

   1 // RUN: %clang_cc1 -fsyntax-only -std=c23 %s -verify
   2
   3 // Ensure that thread_local and _Thread_local are synonyms in C23 and both
   4 // restrict local variables to be explicitly static or extern.
   5 void func(void) {
   6   // FIXME: it would be nice if the diagnostic said 'thread_local' in this case.
   7   thread_local int i = 12;  // expected-error {{'_Thread_local' variables must have global storage}}
   8   _Thread_local int j = 13; // expected-error {{'_Thread_local' variables must have global storage}}
   9
  10   static thread_local int k = 14;
  11   static _Thread_local int l = 15;
  12
  13   extern thread_local int m;
  14   extern thread_local int n;
  15 }
  16
  17 // This would previously fail because the tls models were different.
  18 extern thread_local unsigned a;
  19 _Thread_local unsigned a = 0;