clang/test/Sema/thread_local.c

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