1 // RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
2 
3 // RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
4 
5 void foo() {
6 }
7 
8 void xxx(int argc) {
9   int x; // expected-note {{initialize the variable 'x' to silence this warning}}
10 #pragma omp parallel
11   argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
12 }
13 
14 #pragma omp parallel // expected-error {{unexpected OpenMP directive '#pragma omp parallel'}}
15 
16 int a;
17 struct S;
18 S& bar();
19 int main(int argc, char **argv) {
20   S &s = bar();
21   #pragma omp parallel
22   (void)&s;
23   #pragma omp parallel { // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
24   foo();
25   #pragma omp parallel ( // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
26   foo();
27   #pragma omp parallel [ // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
28   foo();
29   #pragma omp parallel ] // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
30   foo();
31   #pragma omp parallel ) // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
32   foo();
33   #pragma omp parallel } // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
34   foo();
35   #pragma omp parallel
36   // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel' are ignored}}
37   #pragma omp parallel unknown()
38   foo();
39   L1:
40     foo();
41   #pragma omp parallel ordered // expected-error {{unexpected OpenMP clause 'ordered' in directive '#pragma omp parallel'}}
42     ;
43   #pragma omp parallel
44   ;
45   #pragma omp parallel
46   {
47     goto L1; // expected-error {{use of undeclared label 'L1'}}
48     argc++;
49   }
50 
51   for (int i = 0; i < 10; ++i) {
52     switch(argc) {
53      case (0):
54       #pragma omp parallel
55       {
56         foo();
57         break; // expected-error {{'break' statement not in loop or switch statement}}
58         continue; // expected-error {{'continue' statement not in loop statement}}
59       }
60       default:
61        break;
62     }
63   }
64 #pragma omp parallel default(none) // expected-note 2 {{explicit data sharing attribute requested here}}
65   {
66     ++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
67     ++a;    // expected-error {{variable 'a' must have explicitly specified data sharing attributes}}
68   }
69 
70   goto L2; // expected-error {{use of undeclared label 'L2'}}
71   #pragma omp parallel
72   L2:
73   foo();
74   #pragma omp parallel
75   {
76     return 1; // expected-error {{cannot return from OpenMP region}}
77   }
78 
79   [[]] // expected-error {{an attribute list cannot appear here}}
80   #pragma omp parallel
81   for (int n = 0; n < 100; ++n) {}
82 
83   return 0;
84 }
85 
86 struct a {
87   static constexpr int b = 0;
88 };
89 template <bool> struct c;
90 template <typename d, typename e> bool operator<(d, e);
91 struct f {
92   int cbegin;
93 };
94 class g {
95   f blocks;
96   void j();
97 };
98 template <typename> struct is_error_code_enum : a {};
99 struct h {
100   template <typename i, typename = c<is_error_code_enum<i>::b>> h(i);
101 };
102 h operator<(h, h);
103 void g::j() {
104 #pragma omp parallel for default(none) if(a::b)
105   for (auto a = blocks.cbegin; a < blocks; ++a) // expected-error 2 {{invalid operands to binary expression ('f' and 'int')}}
106     ;
107 }
108