test/Sema/private-extern.c

   1 // RUN: clang-cc -verify -fsyntax-only %s
   2
   3 static int g0; // expected-note{{previous definition}}
   4 int g0; // expected-error{{non-static declaration of 'g0' follows static declaration}}
   5
   6 static int g1;
   7 extern int g1;
   8
   9 static int g2;
  10 __private_extern__ int g2;
  11
  12 int g3; // expected-note{{previous definition}}
  13 static int g3; // expected-error{{static declaration of 'g3' follows non-static declaration}}
  14
  15 extern int g4; // expected-note{{previous definition}}
  16 static int g4; // expected-error{{static declaration of 'g4' follows non-static declaration}}
  17
  18 __private_extern__ int g5; // expected-note{{previous definition}}
  19 static int g5; // expected-error{{static declaration of 'g5' follows non-static declaration}}
  20
  21 void f0() {
  22   // FIXME: Diagnose this?
  23   int g6;
  24   extern int g6;
  25 }
  26
  27 void f1() {
  28   // FIXME: Diagnose this?
  29   int g7;
  30   __private_extern__ int g7;
  31 }
  32
  33 void f2() {
  34   extern int g8; // expected-note{{previous definition}}
  35   // FIXME: Improve this diagnostic.
  36   int g8; // expected-error{{redefinition of 'g8'}}
  37 }
  38
  39 void f3() {
  40   __private_extern__ int g9; // expected-note{{previous definition}}
  41   // FIXME: Improve this diagnostic.
  42   int g9; // expected-error{{redefinition of 'g9'}}
  43 }
  44
  45 void f4() {
  46   extern int g10;
  47   extern int g10;
  48 }
  49
  50 void f5() {
  51   __private_extern__ int g11;
  52   __private_extern__ int g11;
  53 }
  54
  55 void f6() {
  56   // FIXME: Diagnose
  57   extern int g12;
  58   __private_extern__ int g12;
  59 }
  60
  61 void f7() {
  62   // FIXME: Diagnose
  63   __private_extern__ int g13;
  64   extern int g13;
  65 }
  66
  67 struct s0;
  68 void f8() {
  69   extern struct s0 g14;
  70   __private_extern__ struct s0 g14;
  71 }
  72 struct s0 { int x; };
  73
  74 void f9() {
  75   extern int g15 = 0; // expected-error{{'extern' variable cannot have an initializer}}
  76   // FIXME: linkage specifier in warning.
  77   __private_extern__ int g16 = 0; // expected-error{{'extern' variable cannot have an initializer}}
  78 }
  79
  80 extern int g17;
  81 int g17 = 0;
  82
  83 extern int g18 = 0; // expected-warning{{'extern' variable has an initializer}}
  84
  85 __private_extern__ int g19;
  86 int g19 = 0;
  87
  88 __private_extern__ int g20 = 0;