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      1 // RUN: %clang_cc1 -verify -fsyntax-only -Wno-private-extern %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   int g6; // expected-note {{previous}}
     23   extern int g6; // expected-error {{extern declaration of 'g6' follows non-extern declaration}}
     24 }
     25 
     26 void f1() {
     27   int g7; // expected-note {{previous}}
     28   __private_extern__ int g7; // expected-error {{extern declaration of 'g7' follows non-extern declaration}}
     29 }
     30 
     31 void f2() {
     32   extern int g8; // expected-note{{previous definition}}
     33   int g8; // expected-error {{non-extern declaration of 'g8' follows extern declaration}}
     34 }
     35 
     36 void f3() {
     37   __private_extern__ int g9; // expected-note{{previous definition}}
     38   int g9; // expected-error {{non-extern declaration of 'g9' follows extern declaration}}
     39 }
     40 
     41 void f4() {
     42   extern int g10;
     43   extern int g10;
     44 }
     45 
     46 void f5() {
     47   __private_extern__ int g11;
     48   __private_extern__ int g11;
     49 }
     50 
     51 void f6() {
     52   // FIXME: Diagnose
     53   extern int g12;
     54   __private_extern__ int g12;
     55 }
     56 
     57 void f7() {
     58   // FIXME: Diagnose
     59   __private_extern__ int g13;
     60   extern int g13;
     61 }
     62 
     63 struct s0;
     64 void f8() {
     65   extern struct s0 g14;
     66   __private_extern__ struct s0 g14;
     67 }
     68 struct s0 { int x; };
     69 
     70 void f9() {
     71   extern int g15 = 0; // expected-error{{'extern' variable cannot have an initializer}}
     72   // FIXME: linkage specifier in warning.
     73   __private_extern__ int g16 = 0; // expected-error{{'extern' variable cannot have an initializer}}
     74 }
     75 
     76 extern int g17;
     77 int g17 = 0;
     78 
     79 extern int g18 = 0; // expected-warning{{'extern' variable has an initializer}}
     80 
     81 __private_extern__ int g19;
     82 int g19 = 0;
     83 
     84 __private_extern__ int g20 = 0;
     85