thread-specifier.c revision b6b127f279f89d992e0713866f17fed267147a79
1// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only -Wno-private-extern -verify -pedantic %s -DGNU 2// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only -Wno-private-extern -verify -pedantic -x c++ %s -DGNU 3// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only -Wno-private-extern -verify -pedantic %s -DC11 -D__thread=_Thread_local 4// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only -Wno-private-extern -verify -pedantic -x c++ %s -DC11 -D__thread=_Thread_local 5// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only -Wno-private-extern -verify -pedantic -x c++ %s -DCXX11 -D__thread=thread_local -std=c++11 6// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only -Wno-private-extern -verify -pedantic -x c++ %s -DC11 -D__thread=_Thread_local -std=c++11 7 8#ifdef __cplusplus 9// In C++, we define __private_extern__ to extern. 10#undef __private_extern__ 11#endif 12 13__thread int t1; 14__thread extern int t2; 15__thread static int t3; 16#ifdef GNU 17// expected-warning@-3 {{'__thread' before 'extern'}} 18// expected-warning@-3 {{'__thread' before 'static'}} 19#endif 20 21__thread __private_extern__ int t4; 22struct t5 { __thread int x; }; 23#ifdef __cplusplus 24// expected-error-re@-2 {{'(__thread|_Thread_local|thread_local)' is only allowed on variable declarations}} 25#else 26// FIXME: The 'is only allowed on variable declarations' diagnostic is better here. 27// expected-error@-5 {{type name does not allow storage class to be specified}} 28#endif 29 30__thread int t6(); 31#if defined(GNU) 32// expected-error@-2 {{'__thread' is only allowed on variable declarations}} 33#elif defined(C11) 34// expected-error@-4 {{'_Thread_local' is only allowed on variable declarations}} 35#else 36// expected-error@-6 {{'thread_local' is only allowed on variable declarations}} 37#endif 38 39int f(__thread int t7) { // expected-error {{' is only allowed on variable declarations}} 40 __thread int t8; 41#if defined(GNU) 42 // expected-error@-2 {{'__thread' variables must have global storage}} 43#elif defined(C11) 44 // expected-error@-4 {{'_Thread_local' variables must have global storage}} 45#else 46 // expected-error@-6 {{'thread_local' variables must have global storage}} 47#endif 48 extern __thread int t9; 49 static __thread int t10; 50 __thread __private_extern__ int t11; 51#if __cplusplus < 201103L 52 __thread auto int t12a; // expected-error-re {{cannot combine with previous '(__thread|_Thread_local)' declaration specifier}} 53 auto __thread int t12b; // expected-error {{cannot combine with previous 'auto' declaration specifier}} 54#else 55 __thread auto t12a = 0; // expected-error-re {{'(t|_T)hread_local' variables must have global storage}} 56 auto __thread t12b = 0; // expected-error-re {{'(t|_T)hread_local' variables must have global storage}} 57#endif 58 __thread register int t13a; // expected-error-re {{cannot combine with previous '(__thread|_Thread_local|thread_local)' declaration specifier}} 59 register __thread int t13b; // expected-error {{cannot combine with previous 'register' declaration specifier}} 60} 61 62__thread typedef int t14; // expected-error-re {{cannot combine with previous '(__thread|_Thread_local|thread_local)' declaration specifier}} 63__thread int t15; // expected-note {{previous declaration is here}} 64extern int t15; // expected-error {{non-thread-local declaration of 't15' follows thread-local declaration}} 65extern int t16; // expected-note {{previous declaration is here}} 66__thread int t16; // expected-error {{thread-local declaration of 't16' follows non-thread-local declaration}} 67 68#ifdef CXX11 69extern thread_local int t17; // expected-note {{previous declaration is here}} 70_Thread_local int t17; // expected-error {{thread-local declaration of 't17' with static initialization follows declaration with dynamic initialization}} 71extern _Thread_local int t18; // expected-note {{previous declaration is here}} 72thread_local int t18; // expected-error {{thread-local declaration of 't18' with dynamic initialization follows declaration with static initialization}} 73#endif 74 75// PR13720 76__thread int thread_int; 77int *thread_int_ptr = &thread_int; 78#ifndef __cplusplus 79// expected-error@-2 {{initializer element is not a compile-time constant}} 80#endif 81void g() { 82 int *p = &thread_int; // This is perfectly fine, though. 83} 84#if __cplusplus >= 201103L 85constexpr int *thread_int_ptr_2 = &thread_int; // expected-error {{must be initialized by a constant expression}} 86#endif 87 88int non_const(); 89__thread int non_const_init = non_const(); 90#if !defined(__cplusplus) 91// expected-error@-2 {{initializer element is not a compile-time constant}} 92#elif !defined(CXX11) 93// expected-error@-4 {{initializer for thread-local variable must be a constant expression}} 94#if __cplusplus >= 201103L 95// expected-note@-6 {{use 'thread_local' to allow this}} 96#endif 97#endif 98 99#ifdef __cplusplus 100struct S { 101 ~S(); 102}; 103__thread S s; 104#if !defined(CXX11) 105// expected-error@-2 {{type of thread-local variable has non-trivial destruction}} 106#if __cplusplus >= 201103L 107// expected-note@-4 {{use 'thread_local' to allow this}} 108#endif 109#endif 110#endif 111 112__thread int aggregate[10] = {0}; 113