1 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -ferror-limit 150 -o - %s -Wuninitialized
2 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
3 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
4 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -fopenmp-version=50 -ferror-limit 150 -o - %s -Wuninitialized
5 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -fopenmp-version=50 -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
6 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -fopenmp-version=50 -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
7 
8 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -ferror-limit 150 -o - %s -Wuninitialized
9 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
10 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
11 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -fopenmp-version=50 -ferror-limit 150 -o - %s -Wuninitialized
12 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -fopenmp-version=50 -std=c++98 -ferror-limit 150 -o - %s -Wuninitialized
13 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -fopenmp-version=50 -std=c++11 -ferror-limit 150 -o - %s -Wuninitialized
14 
15 extern int omp_default_mem_alloc;
16 void xxx(int argc) {
17   int fp; // expected-note {{initialize the variable 'fp' to silence this warning}}
18 #pragma omp parallel reduction(+:fp) // expected-warning {{variable 'fp' is uninitialized when used here}}
19   for (int i = 0; i < 10; ++i)
20     ;
21 }
22 
23 void foo() {
24 }
25 
26 bool foobool(int argc) {
27   return argc;
28 }
29 
30 void foobar(int &ref) {
31 #pragma omp parallel reduction(+:ref)
32   foo();
33 }
34 
35 struct S1; // expected-note {{declared here}} expected-note 4 {{forward declaration of 'S1'}}
36 extern S1 a;
37 class S2 {
38   mutable int a;
39   S2 &operator+(const S2 &arg) { return (*this); } // expected-note 3 {{implicitly declared private here}}
40 
41 public:
42   S2() : a(0) {}
43   S2(S2 &s2) : a(s2.a) {}
44   static float S2s; // expected-note 2 {{static data member is predetermined as shared}}
45   static const float S2sc; // expected-note 2 {{'S2sc' declared here}}
46 };
47 const float S2::S2sc = 0;
48 S2 b;                     // expected-note 3 {{'b' defined here}}
49 const S2 ba[5];           // expected-note 2 {{'ba' defined here}}
50 class S3 {
51   int a;
52 
53 public:
54   int b;
55   S3() : a(0) {}
56   S3(const S3 &s3) : a(s3.a) {}
57   S3 operator+(const S3 &arg1) { return arg1; }
58 };
59 int operator+(const S3 &arg1, const S3 &arg2) { return 5; }
60 S3 c;               // expected-note 3 {{'c' defined here}}
61 const S3 ca[5];     // expected-note 2 {{'ca' defined here}}
62 extern const int f; // expected-note 4 {{'f' declared here}}
63 class S4 {
64   int a;
65   S4(); // expected-note {{implicitly declared private here}}
66   S4(const S4 &s4);
67   S4 &operator+(const S4 &arg) { return (*this); }
68 
69 public:
70   S4(int v) : a(v) {}
71 };
72 S4 &operator&=(S4 &arg1, S4 &arg2) { return arg1; }
73 class S5 {
74   int a;
75   S5() : a(0) {} // expected-note {{implicitly declared private here}}
76   S5(const S5 &s5) : a(s5.a) {}
77   S5 &operator+(const S5 &arg);
78 
79 public:
80   S5(int v) : a(v) {}
81 };
82 class S6 { // expected-note 3 {{candidate function (the implicit copy assignment operator) not viable: no known conversion from 'int' to 'const S6' for 1st argument}}
83 #if __cplusplus >= 201103L // C++11 or later
84 // expected-note@-2 3 {{candidate function (the implicit move assignment operator) not viable}}
85 #endif
86   int a;
87 
88 public:
89   S6() : a(6) {}
90   operator int() { return 6; }
91 } o;
92 
93 S3 h, k;
94 #pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
95 int *gptr;
96 #pragma omp threadprivate(gptr) // expected-note {{defined as threadprivate or thread local}}
97 
98 template <class T>       // expected-note {{declared here}}
99 T tmain(T argc) {
100   const T d = T();       // expected-note 4 {{'d' defined here}}
101   const T da[5] = {T()}; // expected-note 2 {{'da' defined here}}
102   T qa[5] = {T()};
103   T i, z;
104   T &j = i;                    // expected-note 4 {{'j' defined here}}
105   S3 &p = k;                   // expected-note 2 {{'p' defined here}}
106   const T &r = da[(int)i];     // expected-note 2 {{'r' defined here}}
107   T &q = qa[(int)i];           // expected-note 2 {{'q' defined here}}
108   T fl;
109 #pragma omp parallel reduction // expected-error {{expected '(' after 'reduction'}}
110   foo();
111 #pragma omp parallel reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
112   foo();
113 #pragma omp parallel reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
114   foo();
115 #pragma omp parallel reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
116   foo();
117 #pragma omp parallel reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
118   foo();
119 #pragma omp parallel reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
120   foo();
121 #pragma omp parallel reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
122   foo();
123 #pragma omp parallel reduction(& : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
124   foo();
125 #pragma omp parallel reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
126   foo();
127 #pragma omp parallel reduction(|| : argc ? i : argc) // expected-error 2 {{expected variable name, array element or array section}}
128   foo();
129 #pragma omp parallel reduction(foo : argc) //expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max' or declare reduction for type 'float'}} expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max' or declare reduction for type 'int'}}
130   foo();
131 #pragma omp parallel reduction(&& : argc) allocate , allocate(, allocate(omp_default , allocate(omp_default_mem_alloc, allocate(omp_default_mem_alloc:, allocate(omp_default_mem_alloc: argc, allocate(omp_default_mem_alloc: argv), allocate(argv) // expected-error {{expected '(' after 'allocate'}} expected-error 2 {{expected expression}} expected-error 2 {{expected ')'}} expected-error {{use of undeclared identifier 'omp_default'}} expected-note 2 {{to match this '('}}
132   foo();
133 #pragma omp parallel reduction(^ : T) // expected-error {{'T' does not refer to a value}}
134   foo();
135 #pragma omp parallel reduction(+ : z, a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 3 {{const-qualified variable cannot be reduction}} expected-error 2 {{'operator+' is a private member of 'S2'}}
136   foo();
137 #pragma omp parallel reduction(min : a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 4 {{arguments of OpenMP clause 'reduction' for 'min' or 'max' must be of arithmetic type}} expected-error 3 {{const-qualified variable cannot be reduction}}
138   foo();
139 #pragma omp parallel reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
140   foo();
141 #pragma omp parallel reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
142   foo();
143 #pragma omp parallel reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
144   foo();
145 #pragma omp parallel reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}} expected-error {{const-qualified variable cannot be reduction}}
146   foo();
147 #pragma omp parallel reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
148   foo();
149 #pragma omp parallel reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
150   foo();
151 #pragma omp parallel reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
152   foo();
153 #pragma omp parallel reduction(+ : h, k) // expected-error {{threadprivate or thread local variable cannot be reduction}}
154   foo();
155 #pragma omp parallel reduction(+ : o) // expected-error 2 {{no viable overloaded '='}}
156   foo();
157 #pragma omp parallel private(i), reduction(+ : j), reduction(+ : q) // expected-error 4 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
158   foo();
159 #pragma omp parallel private(k)
160 #pragma omp parallel reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
161   foo();
162 #pragma omp parallel reduction(+ : p), reduction(+ : p) // expected-error 2 {{variable can appear only once in OpenMP 'reduction' clause}} expected-note 2 {{previously referenced here}}
163   foo();
164 #pragma omp parallel reduction(+ : r) // expected-error 2 {{const-qualified variable cannot be reduction}}
165   foo();
166 #pragma omp parallel shared(i)
167 #pragma omp parallel reduction(min : i)
168 #pragma omp parallel reduction(max : j) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
169   foo();
170 #pragma omp parallel
171 #pragma omp for private(fl)
172   for (int i = 0; i < 10; ++i)
173 #pragma omp parallel reduction(+ : fl)
174     foo();
175 #pragma omp parallel
176 #pragma omp for reduction(- : fl)
177   for (int i = 0; i < 10; ++i)
178 #pragma omp parallel reduction(+ : fl)
179     foo();
180 
181   return T();
182 }
183 
184 namespace A {
185 double x;
186 #pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
187 }
188 namespace B {
189 using A::x;
190 }
191 
192 int main(int argc, char **argv) {
193   const int d = 5;       // expected-note 2 {{'d' defined here}}
194   const int da[5] = {0}; // expected-note {{'da' defined here}}
195   int qa[5] = {0};
196   S4 e(4);
197   S5 g(5);
198   int i, z;
199   int &j = i;                  // expected-note 2 {{'j' defined here}}
200   S3 &p = k;                   // expected-note 2 {{'p' defined here}}
201   const int &r = da[i];        // expected-note {{'r' defined here}}
202   int &q = qa[i];              // expected-note {{'q' defined here}}
203   float fl;
204 #pragma omp parallel reduction // expected-error {{expected '(' after 'reduction'}}
205   foo();
206 #pragma omp parallel reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
207   foo();
208 #pragma omp parallel reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
209   foo();
210 #pragma omp parallel reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
211   foo();
212 #pragma omp parallel reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
213   foo();
214 #pragma omp parallel reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
215   foo();
216 #pragma omp parallel reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
217   foo();
218 #pragma omp parallel reduction(foo : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max'}}
219   foo();
220 #pragma omp parallel reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
221   foo();
222 #pragma omp parallel reduction(|| : argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name, array element or array section}}
223   foo();
224 #pragma omp parallel reduction(~ : argc) // expected-error {{expected unqualified-id}}
225   foo();
226 #pragma omp parallel reduction(&& : argc, z)
227   foo();
228 #pragma omp parallel reduction(^ : S1) // expected-error {{'S1' does not refer to a value}}
229   foo();
230 #pragma omp parallel reduction(+ : a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 2 {{const-qualified variable cannot be reduction}} expected-error {{'operator+' is a private member of 'S2'}}
231   foo();
232 #pragma omp parallel reduction(min : a, b, c, d, f) // expected-error {{a reduction list item with incomplete type 'S1'}} expected-error 2 {{arguments of OpenMP clause 'reduction' for 'min' or 'max' must be of arithmetic type}} expected-error 2 {{const-qualified variable cannot be reduction}}
233   foo();
234 #pragma omp parallel reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
235   foo();
236 #pragma omp parallel reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
237   foo();
238 #pragma omp parallel reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
239   foo();
240 #pragma omp parallel reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}}
241   foo();
242 #pragma omp parallel reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
243   foo();
244 #pragma omp parallel reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
245   foo();
246 #pragma omp parallel reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
247   foo();
248 #pragma omp parallel reduction(& : e, g) // expected-error {{calling a private constructor of class 'S4'}} expected-error {{calling a private constructor of class 'S5'}} expected-error {{invalid operands to binary expression ('S5' and 'S5')}}
249   foo();
250 #pragma omp parallel reduction(+ : h, k, B::x) // expected-error 2 {{threadprivate or thread local variable cannot be reduction}}
251   foo();
252 #pragma omp parallel reduction(+ : o) // expected-error {{no viable overloaded '='}}
253   foo();
254 #pragma omp parallel private(i), reduction(+ : j), reduction(+ : q) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
255   foo();
256 #pragma omp parallel private(k)
257 #pragma omp parallel reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
258   foo();
259 #pragma omp parallel reduction(+ : p), reduction(+ : p) // expected-error {{variable can appear only once in OpenMP 'reduction' clause}} expected-note {{previously referenced here}}
260   foo();
261 #pragma omp parallel reduction(+ : r) // expected-error {{const-qualified variable cannot be reduction}}
262   foo();
263 #pragma omp parallel shared(i)
264 #pragma omp parallel reduction(min : i)
265 #pragma omp parallel reduction(max : j) // expected-error {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
266   foo();
267 #pragma omp parallel
268 #pragma omp for private(fl)
269   for (int i = 0; i < 10; ++i)
270 #pragma omp parallel reduction(+ : fl)
271     foo();
272 #pragma omp parallel
273 #pragma omp for reduction(- : fl)
274   for (int i = 0; i < 10; ++i)
275 #pragma omp parallel reduction(+ : fl)
276     foo();
277   static int m;
278 #pragma omp parallel reduction(+ : m) // OK
279   m++;
280 #pragma omp parallel reduction(task, + : m) // omp45-error 2 {{expected expression}} omp45-warning {{missing ':' after reduction identifier - ignoring}}
281   m++;
282 #pragma omp parallel reduction(+:gptr[:argc]) // expected-error {{threadprivate or thread local variable cannot be reduction}}
283   ;
284 
285   return tmain(argc) + tmain(fl); // expected-note {{in instantiation of function template specialization 'tmain<int>' requested here}} expected-note {{in instantiation of function template specialization 'tmain<float>' requested here}}
286 }
287