clang/test/Sema/private-extern.c

   1 // RUN: %clang_cc1 -verify -fsyntax-only -Wno-private-extern %s
   2 // RUN: %clang_cc1 -verify -fsyntax-only -Wno-private-extern -fmodules %s
   3
   4 static int g0; // expected-note{{previous definition}}
   5 int g0; // expected-error{{non-static declaration of 'g0' follows static declaration}}
   6
   7 static int g1;
   8 extern int g1;
   9
  10 static int g2;
  11 __private_extern__ int g2;
  12
  13 int g3; // expected-note{{previous definition}}
  14 static int g3; // expected-error{{static declaration of 'g3' follows non-static declaration}}
  15
  16 extern int g4; // expected-note{{previous declaration}}
  17 static int g4; // expected-error{{static declaration of 'g4' follows non-static declaration}}
  18
  19 __private_extern__ int g5; // expected-note{{previous declaration}}
  20 static int g5; // expected-error{{static declaration of 'g5' follows non-static declaration}}
  21
  22 void f0(void) {
  23   int g6; // expected-note {{previous}}
  24   extern int g6; // expected-error {{extern declaration of 'g6' follows non-extern declaration}}
  25 }
  26
  27 void f1(void) {
  28   int g7; // expected-note {{previous}}
  29   __private_extern__ int g7; // expected-error {{extern declaration of 'g7' follows non-extern declaration}}
  30 }
  31
  32 void f2(void) {
  33   extern int g8; // expected-note{{previous declaration}}
  34   int g8; // expected-error {{non-extern declaration of 'g8' follows extern declaration}}
  35 }
  36
  37 void f3(void) {
  38   __private_extern__ int g9; // expected-note{{previous declaration}}
  39   int g9; // expected-error {{non-extern declaration of 'g9' follows extern declaration}}
  40 }
  41
  42 void f4(void) {
  43   extern int g10;
  44   extern int g10;
  45 }
  46
  47 void f5(void) {
  48   __private_extern__ int g11;
  49   __private_extern__ int g11;
  50 }
  51
  52 void f6(void) {
  53   // FIXME: Diagnose
  54   extern int g12;
  55   __private_extern__ int g12;
  56 }
  57
  58 void f7(void) {
  59   // FIXME: Diagnose
  60   __private_extern__ int g13;
  61   extern int g13;
  62 }
  63
  64 struct s0;
  65 void f8(void) {
  66   extern struct s0 g14;
  67   __private_extern__ struct s0 g14;
  68 }
  69 struct s0 { int x; };
  70
  71 void f9(void) {
  72   extern int g15 = 0; // expected-error{{declaration of block scope identifier with linkage cannot have an initializer}}
  73   // FIXME: linkage specifier in warning.
  74   __private_extern__ int g16 = 0; // expected-error{{declaration of block scope identifier with linkage cannot have an initializer}}
  75 }
  76
  77 extern int g17;
  78 int g17 = 0;
  79
  80 extern int g18 = 0; // expected-warning{{'extern' variable has an initializer}}
  81
  82 __private_extern__ int g19;
  83 int g19 = 0;
  84
  85 __private_extern__ int g20 = 0;