clang/test/Sema/decl-in-prototype.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 #define SA(n, c) int arr##n[(c) ? 1 : -1] = {}
   4
   5 const int AA = 5;
   6
   7 int f1(enum {AA,BB} E) { // expected-warning {{will not be visible outside of this function}}
   8   SA(1, AA == 0);
   9   SA(2, BB == 1);
  10   return BB;
  11 }
  12
  13 int f2(enum {AA=7,BB} E) { // expected-warning {{will not be visible outside of this function}}
  14   SA(1, AA == 7);
  15   SA(2, BB == 8);
  16   return AA;
  17 }
  18
  19 struct a {
  20 };
  21
  22 int f3(struct a { } *); // expected-warning {{will not be visible outside of this function}}
  23
  24 struct A { struct b { int j; } t; }; // expected-note {{previous definition is here}}
  25
  26 int f4(struct A { struct b { int j; } t; } *); // expected-warning {{declaration of 'struct A' will not be visible outside of this function}} expected-warning {{redefinition of 'b' will not be visible outside of this function}}
  27
  28 struct aA {
  29     struct ab { // expected-note {{previous definition is here}} expected-note {{previous definition is here}}
  30         int j;
  31     } b;
  32 };
  33
  34 int f5(struct aA { struct ab { int j; } b; struct ab { char glorx; } glorx; } *); // expected-warning {{declaration of 'struct aA' will not be visible}} expected-warning {{redefinition of 'ab' will not be visible}} expected-warning {{redefinition of 'ab' will not be visible}}
  35
  36 void f6(struct z {int b;} c) { // expected-warning {{declaration of 'struct z' will not be visible outside of this function}}
  37     struct z d;
  38     d.b = 4;
  39 }
  40
  41 void pr19018_1 (enum e19018 { qq } x); // expected-warning{{declaration of 'enum e19018' will not be visible outside of this function}}
  42 enum e19018 qq; //expected-error{{tentative definition has type 'enum e19018' that is never completed}} \
  43                 //expected-note{{forward declaration of 'enum e19018'}}
  44
  45 // Only warn once, even if we create two declarations.
  46 void f(struct q *, struct __attribute__((aligned(4))) q *); // expected-warning {{will not be visible outside}}
  47
  48 // This enum inside the function pointer parameter shouldn't leak into the
  49 // function.
  50 enum { BB = 0 };
  51 void enum_in_fun_in_fun(void (*fp)(enum { AA, BB } e)) { // expected-warning {{will not be visible}}
  52   SA(1, AA == 5); // expected-warning{{variable length array folded to constant array as an extension}}
  53   SA(2, BB == 0);
  54 }
  55
  56 void f7(void) {
  57   extern void ext(struct S { enum E7 { a, b } o; } p); // expected-warning 2 {{will not be visible}}
  58   ext(a); // expected-error {{use of undeclared identifier}}
  59 }
  60
  61 int f8(struct S { enum E8 { a, b } o; } p) { // expected-warning 2 {{will not be visible}}
  62   struct S o;
  63   enum E8 x;
  64   return a + b;
  65 }
  66 // expected-note@+1 {{forward declaration}}
  67 struct S o; // expected-error {{'struct S' that is never completed}}
  68 // expected-note@+1 {{forward declaration}}
  69 enum E8 x = a + b; // expected-error 2 {{undeclared identifier}} expected-error {{incomplete type 'enum E8'}}
  70
  71 int f9(struct { enum e { a = 1 } b; } c) { // expected-warning {{will not be visible}}
  72   return a;
  73 }
  74
  75 int f10(
  76   struct S { // expected-warning {{will not be visible}}
  77     enum E10 { a, b, c } f; // expected-warning {{will not be visible}}
  78   } e) {
  79   return a == b;
  80 }
  81
  82 int f11(
  83   struct S { // expected-warning {{will not be visible}}
  84     enum E11 { // expected-warning {{will not be visible}}
  85       a, b, c
  86     } // expected-warning {{expected ';' at end of declaration list}}
  87   } // expected-error {{expected member name or ';'}}
  88   e);
  89
  90 void f12(void) {
  91   extern int ext12(
  92       struct S12 { } e // expected-warning {{will not be visible}}
  93       );
  94   struct S12 o; // expected-error {{incomplete type}} expected-note {{forward declaration}}
  95 }