1 // RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 %s -Wuninitialized
2 // RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -std=c++98 %s -Wuninitialized
3 // RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -std=c++11 %s -Wuninitialized
4 
5 // RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 %s -Wuninitialized
6 // RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 -std=c++98 %s -Wuninitialized
7 // RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 -std=c++11 %s -Wuninitialized
8 
9 int temp; // expected-note 7 {{'temp' declared here}}
10 
11 #pragma omp declare reduction                                              // expected-error {{expected '(' after 'declare reduction'}}
12 #pragma omp declare reduction {                                            // expected-error {{expected '(' after 'declare reduction'}}
13 #pragma omp declare reduction(                                             // expected-error {{expected identifier or one of the following operators: '+', '-', '*', '&', '|', '^', '&&', or '||'}}
14 #pragma omp declare reduction(#                                            // expected-error {{expected identifier or one of the following operators: '+', '-', '*', '&', '|', '^', '&&', or '||'}}
15 #pragma omp declare reduction(/                                            // expected-error {{expected identifier or one of the following operators: '+', '-', '*', '&', '|', '^', '&&', or '||'}}
16 #pragma omp declare reduction(+                                            // expected-error {{expected ':'}}
17 #pragma omp declare reduction(operator                                     // expected-error {{expected identifier or one of the following operators: '+', '-', '*', '&', '|', '^', '&&', or '||'}}
18 #pragma omp declare reduction(operator:                                    // expected-error {{expected identifier or one of the following operators: '+', '-', '*', '&', '|', '^', '&&', or '||'}} expected-error {{expected a type}}
19 #pragma omp declare reduction(oper:                                        // expected-error {{expected a type}}
20 #pragma omp declare reduction(oper;                                        // expected-error {{expected ':'}} expected-error {{expected a type}}
21 #pragma omp declare reduction(fun : int                                    // expected-error {{expected ':'}} expected-error {{expected expression}}
22 #pragma omp declare reduction(+ : const int:                               // expected-error {{reduction type cannot be qualified with 'const', 'volatile' or 'restrict'}}
23 #pragma omp declare reduction(- : volatile int:                            // expected-error {{reduction type cannot be qualified with 'const', 'volatile' or 'restrict'}}
24 #pragma omp declare reduction(* : int;                                     // expected-error {{expected ','}} expected-error {{expected a type}}
25 #pragma omp declare reduction(& : double char:                             // expected-error {{cannot combine with previous 'double' declaration specifier}} expected-error {{expected expression}}
26 #pragma omp declare reduction(^ : double, char, :                          // expected-error {{expected a type}} expected-error {{expected expression}}
27 #pragma omp declare reduction(&& : int, S:                                 // expected-error {{unknown type name 'S'}} expected-error {{expected expression}}
28 #pragma omp declare reduction(|| : int, double : temp += omp_in)           // expected-error 2 {{only 'omp_in' or 'omp_out' variables are allowed in combiner expression}}
29 #pragma omp declare reduction(| : char, float : omp_out += ::temp)         // expected-error 2 {{only 'omp_in' or 'omp_out' variables are allowed in combiner expression}}
30 #pragma omp declare reduction(fun : long : omp_out += omp_in) {            // expected-warning {{extra tokens at the end of '#pragma omp declare reduction' are ignored}} expected-error {{expected 'initializer'}}
31 #pragma omp declare reduction(fun : unsigned : omp_out += ::temp))         // expected-warning {{extra tokens at the end of '#pragma omp declare reduction' are ignored}} expected-error {{expected 'initializer'}} expected-error {{only 'omp_in' or 'omp_out' variables are allowed in combiner expression}}
32 #pragma omp declare reduction(fun : long & : omp_out += omp_in)            // expected-error {{reduction type cannot be a reference type}}
33 #pragma omp declare reduction(fun : long(void) : omp_out += omp_in)        // expected-error {{reduction type cannot be a function type}}
34 #pragma omp declare reduction(fun : long[3] : omp_out += omp_in)           // expected-error {{reduction type cannot be an array type}}
35 #pragma omp declare reduction(fun23 : long, int, long : omp_out += omp_in) // expected-error {{redefinition of user-defined reduction for type 'long'}} expected-note {{previous definition is here}}
36 
37 template <class T>
38 class Class1 {
39  T a;
40 public:
41   Class1() : a() {}
42 #pragma omp declare reduction(fun : T : temp)               // expected-error {{only 'omp_in' or 'omp_out' variables are allowed in combiner expression}}
43 #pragma omp declare reduction(fun1 : T : omp_out++)         // expected-note {{previous definition is here}} expected-error {{reduction type cannot be a reference type}}
44 #pragma omp declare reduction(fun1 : T : omp_out += omp_in) // expected-error {{redefinition of user-defined reduction for type 'T'}}
45 #pragma omp declare reduction(fun2 : T, T : omp_out++)      // expected-error {{reduction type cannot be a reference type}} expected-error {{redefinition of user-defined reduction for type 'T'}} expected-note {{previous definition is here}}
46 #pragma omp declare reduction(foo : T : omp_out += this->a) // expected-error {{invalid use of 'this' outside of a non-static member function}}
47 };
48 
49 Class1<char &> e; // expected-note {{in instantiation of template class 'Class1<char &>' requested here}}
50 
51 template <class T>
52 class Class2 : public Class1<T> {
53 #pragma omp declare reduction(fun : T : omp_out += omp_in)
54 };
55 
56 #pragma omp declare reduction(fun222 : long : omp_out += omp_in)                                        // expected-note {{previous definition is here}}
57 #pragma omp declare reduction(fun222 : long : omp_out += omp_in)                                        // expected-error {{redefinition of user-defined reduction for type 'long'}}
58 #pragma omp declare reduction(fun1 : long : omp_out += omp_in) initializer                              // expected-error {{expected '(' after 'initializer'}}
59 #pragma omp declare reduction(fun2 : long : omp_out += omp_in) initializer {                            // expected-error {{expected '(' after 'initializer'}} expected-error {{expected expression}} expected-warning {{extra tokens at the end of '#pragma omp declare reduction' are ignored}}
60 #pragma omp declare reduction(fun3 : long : omp_out += omp_in) initializer[
61 #if __cplusplus <= 199711L
62 // expected-error@-2 {{expected '(' after 'initializer'}}
63 // expected-error@-3 {{expected expression}}
64 // expected-warning@-4 {{extra tokens at the end of '#pragma omp declare reduction' are ignored}}
65 #else
66 // expected-error@-6 {{expected '(' after 'initializer'}}
67 // expected-error@-7 {{expected variable name or 'this' in lambda capture list}}
68 // expected-error@-8 {{expected ')'}}
69 // expected-note@-9 {{to match this '('}}
70 #endif
71 #pragma omp declare reduction(fun4 : long : omp_out += omp_in) initializer()                            // expected-error {{expected expression}}
72 #pragma omp declare reduction(fun5 : long : omp_out += omp_in) initializer(temp)                        // expected-error {{only 'omp_priv' or 'omp_orig' variables are allowed in initializer expression}}
73 #pragma omp declare reduction(fun6 : long : omp_out += omp_in) initializer(omp_orig                     // expected-error {{expected ')'}} expected-note {{to match this '('}}
74 #pragma omp declare reduction(fun7 : long : omp_out += omp_in) initializer(omp_priv Class1 < int > ())  // expected-error {{expected ')'}} expected-note {{to match this '('}}
75 #pragma omp declare reduction(fun77 : long : omp_out += omp_in) initializer(omp_priv Class2 < int > ()) // expected-error {{expected ')'}} expected-note {{to match this '('}}
76 #pragma omp declare reduction(fun8 : long : omp_out += omp_in) initializer(omp_priv 23)                 // expected-error {{expected ')'}} expected-note {{to match this '('}}
77 #pragma omp declare reduction(fun88 : long : omp_out += omp_in) initializer(omp_priv 23))               // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-warning {{extra tokens at the end of '#pragma omp declare reduction' are ignored}}
78 #pragma omp declare reduction(fun9 : long : omp_out += omp_priv) initializer(omp_in = 23)               // expected-error {{use of undeclared identifier 'omp_priv'; did you mean 'omp_in'?}} expected-note {{'omp_in' declared here}}
79 #pragma omp declare reduction(fun10 : long : omp_out += omp_in) initializer(omp_priv = 23)
80 
81 template <typename T>
82 T fun(T arg) {
83 #pragma omp declare reduction(red : T : omp_out++)
84   {
85 #pragma omp declare reduction(red : T : omp_out++) // expected-note {{previous definition is here}}
86 #pragma omp declare reduction(red : T : omp_out++) // expected-error {{redefinition of user-defined reduction for type 'T'}}
87 #pragma omp declare reduction(fun : T : omp_out += omp_in) initializer(omp_priv = 23)
88   }
89   return arg;
90 }
91 
92 template <typename T>
93 T foo(T arg) {
94   T i;
95   {
96 #pragma omp declare reduction(red : T : omp_out++)
97 #pragma omp declare reduction(red1 : T : omp_out++)   // expected-note {{previous definition is here}}
98 #pragma omp declare reduction(red1 : int : omp_out++) // expected-error {{redefinition of user-defined reduction for type 'int'}}
99   #pragma omp parallel reduction (red : i)
100   {
101   }
102   #pragma omp parallel reduction (red1 : i)
103   {
104   }
105   #pragma omp parallel reduction (red2 : i) // expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max' or declare reduction for type 'int'}}
106   {
107   }
108   }
109   {
110 #pragma omp declare reduction(red1 : int : omp_out++) // expected-note {{previous definition is here}}
111 #pragma omp declare reduction(red : T : omp_out++)
112 #pragma omp declare reduction(red1 : T : omp_out++) // expected-error {{redefinition of user-defined reduction for type 'int'}}
113   #pragma omp parallel reduction (red : i)
114   {
115   }
116   #pragma omp parallel reduction (red1 : i)
117   {
118   }
119   #pragma omp parallel reduction (red2 : i) // expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max' or declare reduction for type 'int'}}
120   {
121   }
122   }
123   return arg;
124 }
125 
126 #pragma omp declare reduction(foo : int : ({int a = omp_in; a = a * 2; omp_out += a; }))
127 int main() {
128   Class1<int> c1;
129   int i;
130   #pragma omp parallel reduction (::fun : c1)
131   {
132   }
133   #pragma omp parallel reduction (::Class1<int>::fun : c1)
134   {
135   }
136   #pragma omp parallel reduction (::Class2<int>::fun : i) // expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max' or declare reduction for type 'int'}}
137   {
138   }
139   return fun(15) + foo(15); // expected-note {{in instantiation of function template specialization 'foo<int>' requested here}}
140 }
141 
142 #if __cplusplus == 201103L
143 struct A {
144   A() {}
145   A(const A &) = default;
146 };
147 
148 int A_TEST() {
149   A test, test1;
150 #pragma omp declare reduction(+ : A : omp_out) initializer(omp_priv = A()) allocate(test) // expected-warning {{extra tokens at the end of '#pragma omp declare reduction' are ignored}}
151 #pragma omp parallel reduction(+ : test) reduction(::operator+: test1) // expected-error {{unable to resolve declare reduction construct for type 'A'}}
152   {}
153   return 0;
154 }
155 
156 struct U
157 {
158   void foo(U&, bool);
159   U();
160 };
161 template <int N>
162 struct S
163 {
164   int s;
165   // expected-note@+1 {{'foo' declared here}}
166   void foo(S &x) {};
167   // expected-error@+1 {{too many arguments to function call, expected single argument 'x', have 2 arguments}}
168   #pragma omp declare reduction (foo : U, S : omp_out.foo(omp_in, false))
169   #pragma omp declare reduction (xxx : U, S : bar(omp_in)) // expected-error {{non-const lvalue reference to type 'S<1>' cannot bind to a value of unrelated type 'U'}}
170   static void bar(S &x); // expected-note {{passing argument to parameter 'x' here}}
171 };
172 // expected-note@+1 {{in instantiation of template class 'S<1>' requested here}}
173 #pragma omp declare reduction (bar : S<1> : omp_out.foo(omp_in))
174 
175 #endif
176