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      1 // RUN: %clang_cc1 %s -fsyntax-only -Wprivate-extern -verify
      2 
      3 // PR3310
      4 struct a x1; // expected-note 2{{forward declaration of 'struct a'}}
      5 static struct a x2; // expected-warning{{tentative definition of variable with internal linkage has incomplete non-array type 'struct a'}}
      6 struct a x3[10]; // expected-error{{array has incomplete element type 'struct a'}}
      7 struct a {int x;};
      8 static struct a x2_okay;
      9 struct a x3_okay[10];
     10 struct b x4; // expected-error{{tentative definition has type 'struct b' that is never completed}} \
     11             // expected-note{{forward declaration of 'struct b'}}
     12 
     13 const int a [1] = {1};
     14 extern const int a[];
     15 
     16 extern const int b[];
     17 const int b [1] = {1};
     18 
     19 extern const int c[] = {1}; // expected-warning{{'extern' variable has an initializer}}
     20 const int c[];
     21 
     22 int i1 = 1; // expected-note {{previous definition is here}}
     23 int i1 = 2; // expected-error {{redefinition of 'i1'}}
     24 int i1;
     25 int i1;
     26 extern int i5; // expected-note {{previous declaration is here}}
     27 static int i5; // expected-error{{static declaration of 'i5' follows non-static declaration}}
     28 
     29 static int i2 = 5; // expected-note 1 {{previous definition is here}}
     30 int i2 = 3; // expected-error{{non-static declaration of 'i2' follows static declaration}}
     31 
     32 static int i3 = 5;
     33 extern int i3;
     34 
     35 // rdar://7703982
     36 __private_extern__ int pExtern; // expected-warning {{use of __private_extern__ on a declaration may not produce external symbol private to the linkage unit and is deprecated}} \
     37 // expected-note {{use __attribute__((visibility("hidden"))) attribute instead}}
     38 int pExtern = 0;
     39 
     40 int i4;
     41 int i4;
     42 extern int i4;
     43 
     44 int (*pToArray)[];
     45 int (*pToArray)[8];
     46 
     47 int redef[10];
     48 int redef[];  // expected-note {{previous definition is here}}
     49 int redef[11]; // expected-error{{redefinition of 'redef'}}
     50 
     51 void func() {
     52   extern int i6; // expected-note {{previous declaration is here}}
     53   static int i6; // expected-error{{static declaration of 'i6' follows non-static declaration}}
     54 }
     55 
     56 void func2(void)
     57 {
     58   extern double *p;
     59   extern double *p;
     60 }
     61 
     62 // <rdar://problem/6808352>
     63 static int a0[];
     64 static int b0;
     65 
     66 static int a0[] = { 4 };
     67 static int b0 = 5;
     68