1 // RUN: %clang_cc1 -verify -fopenmp -o - %s -Wuninitialized
2 // RUN: %clang_cc1 -verify -fopenmp -std=c++98 -o - %s -Wuninitialized
3 // RUN: %clang_cc1 -verify -fopenmp -std=c++11 -o - %s -Wuninitialized
4 
5 // RUN: %clang_cc1 -verify -fopenmp-simd -o - %s -Wuninitialized
6 // RUN: %clang_cc1 -verify -fopenmp-simd -std=c++98 -o - %s -Wuninitialized
7 // RUN: %clang_cc1 -verify -fopenmp-simd -std=c++11 -o - %s -Wuninitialized
8 
9 extern int omp_default_mem_alloc;
10 void xxx(int argc) {
11   int fp; // expected-note {{initialize the variable 'fp' to silence this warning}}
12 #pragma omp parallel for simd reduction(+:fp) // expected-warning {{variable 'fp' is uninitialized when used here}}
13   for (int i = 0; i < 10; ++i)
14     ;
15 }
16 
17 void foo() {
18 }
19 
20 bool foobool(int argc) {
21   return argc;
22 }
23 
24 void foobar(int &ref) {
25 #pragma omp parallel for simd reduction(+:ref)
26   for (int i = 0; i < 10; ++i)
27     foo();
28 }
29 
30 struct S1; // expected-note {{declared here}} expected-note 4 {{forward declaration of 'S1'}}
31 extern S1 a;
32 class S2 {
33   mutable int a;
34   S2 &operator+(const S2 &arg) { return (*this); } // expected-note 3 {{implicitly declared private here}}
35 
36 public:
37   S2() : a(0) {}
38   S2(S2 &s2) : a(s2.a) {}
39   static float S2s; // expected-note 2 {{static data member is predetermined as shared}}
40   static const float S2sc; // expected-note 2 {{'S2sc' declared here}}
41 };
42 const float S2::S2sc = 0;
43 S2 b;                     // expected-note 3 {{'b' defined here}}
44 const S2 ba[5];           // expected-note 2 {{'ba' defined here}}
45 class S3 {
46   int a;
47 
48 public:
49   int b;
50   S3() : a(0) {}
51   S3(const S3 &s3) : a(s3.a) {}
52   S3 operator+(const S3 &arg1) { return arg1; }
53 };
54 int operator+(const S3 &arg1, const S3 &arg2) { return 5; }
55 S3 c;               // expected-note 3 {{'c' defined here}}
56 const S3 ca[5];     // expected-note 2 {{'ca' defined here}}
57 extern const int f; // expected-note 4 {{'f' declared here}}
58 class S4 {
59   int a;
60   S4(); // expected-note {{implicitly declared private here}}
61   S4(const S4 &s4);
62   S4 &operator+(const S4 &arg) { return (*this); }
63 
64 public:
65   S4(int v) : a(v) {}
66 };
67 S4 &operator&=(S4 &arg1, S4 &arg2) { return arg1; }
68 class S5 {
69   int a;
70   S5() : a(0) {} // expected-note {{implicitly declared private here}}
71   S5(const S5 &s5) : a(s5.a) {}
72   S5 &operator+(const S5 &arg);
73 
74 public:
75   S5(int v) : a(v) {}
76 };
77 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}}
78 #if __cplusplus >= 201103L // C++11 or later
79 // expected-note@-2 3 {{candidate function (the implicit move assignment operator) not viable}}
80 #endif
81   int a;
82 
83 public:
84   S6() : a(6) {}
85   operator int() { return 6; }
86 } o;
87 
88 S3 h, k;
89 #pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
90 
91 template <class T>       // expected-note {{declared here}}
92 T tmain(T argc) {
93   const T d = T();       // expected-note 4 {{'d' defined here}}
94   const T da[5] = {T()}; // expected-note 2 {{'da' defined here}}
95   T qa[5] = {T()};
96   T i, z;
97   T &j = i;                        // expected-note 4 {{'j' defined here}}
98   S3 &p = k;                       // expected-note 2 {{'p' defined here}}
99   const T &r = da[(int)i];         // expected-note 2 {{'r' defined here}}
100   T &q = qa[(int)i];               // expected-note 2 {{'q' defined here}}
101   T fl;
102 #pragma omp parallel for simd reduction // expected-error {{expected '(' after 'reduction'}}
103   for (int i = 0; i < 10; ++i)
104     foo();
105 #pragma omp parallel for simd reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp parallel for simd' are ignored}}
106   for (int i = 0; i < 10; ++i)
107     foo();
108 #pragma omp parallel for simd reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
109   for (int i = 0; i < 10; ++i)
110     foo();
111 #pragma omp parallel for simd reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
112   for (int i = 0; i < 10; ++i)
113     foo();
114 #pragma omp parallel for simd reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
115   for (int i = 0; i < 10; ++i)
116     foo();
117 #pragma omp parallel for simd reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
118   for (int i = 0; i < 10; ++i)
119     foo();
120 #pragma omp parallel for simd reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
121   for (int i = 0; i < 10; ++i)
122     foo();
123 #pragma omp parallel for simd reduction(& : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
124   for (int i = 0; i < 10; ++i)
125     foo();
126 #pragma omp parallel for simd reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{invalid operands to binary expression ('float' and 'float')}}
127   for (int i = 0; i < 10; ++i)
128     foo();
129 #pragma omp parallel for simd reduction(|| : argc ? i : argc) // expected-error 2 {{expected variable name, array element or array section}}
130   for (int i = 0; i < 10; ++i)
131     foo();
132 #pragma omp parallel for simd 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'}}
133   for (int i = 0; i < 10; ++i)
134     foo();
135 #pragma omp parallel for simd 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 '('}}
136   for (int i = 0; i < 10; ++i)
137     foo();
138 #pragma omp parallel for simd reduction(^ : T) // expected-error {{'T' does not refer to a value}}
139   for (int i = 0; i < 10; ++i)
140     foo();
141 #pragma omp parallel for simd 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'}}
142   for (int i = 0; i < 10; ++i)
143     foo();
144 #pragma omp parallel for simd 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}}
145   for (int i = 0; i < 10; ++i)
146     foo();
147 #pragma omp parallel for simd reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
148   for (int i = 0; i < 10; ++i)
149     foo();
150 #pragma omp parallel for simd reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
151   for (int i = 0; i < 10; ++i)
152     foo();
153 #pragma omp parallel for simd reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
154   for (int i = 0; i < 10; ++i)
155     foo();
156 #pragma omp parallel for simd reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}} expected-error {{const-qualified variable cannot be reduction}}
157   for (int i = 0; i < 10; ++i)
158     foo();
159 #pragma omp parallel for simd reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
160   for (int i = 0; i < 10; ++i)
161     foo();
162 #pragma omp parallel for simd reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
163   for (int i = 0; i < 10; ++i)
164     foo();
165 #pragma omp parallel for simd reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
166   for (int i = 0; i < 10; ++i)
167     foo();
168 #pragma omp parallel for simd reduction(+ : h, k) // expected-error {{threadprivate or thread local variable cannot be reduction}}
169   for (int i = 0; i < 10; ++i)
170     foo();
171 #pragma omp parallel for simd reduction(+ : o) // expected-error 2 {{no viable overloaded '='}}
172   for (int i = 0; i < 10; ++i)
173     foo();
174 #pragma omp parallel for simd private(i), reduction(+ : j), reduction(+ : q) // expected-error 4 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
175   for (int i = 0; i < 10; ++i)
176     foo();
177 #pragma omp parallel private(k)
178 #pragma omp parallel for simd reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
179   for (int i = 0; i < 10; ++i)
180     foo();
181 #pragma omp parallel for simd reduction(+ : p), reduction(+ : p) // expected-error 2 {{variable can appear only once in OpenMP 'reduction' clause}} expected-note 2 {{previously referenced here}}
182   for (int i = 0; i < 10; ++i)
183     foo();
184 #pragma omp parallel for simd reduction(+ : r) // expected-error 2 {{const-qualified variable cannot be reduction}}
185   for (int i = 0; i < 10; ++i)
186     foo();
187 #pragma omp parallel shared(i)
188 #pragma omp parallel reduction(min : i)
189 #pragma omp parallel for simd reduction(max : j) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
190   for (int i = 0; i < 10; ++i)
191     foo();
192 #pragma omp parallel private(fl)
193 #pragma omp parallel for simd reduction(+ : fl)
194   for (int i = 0; i < 10; ++i)
195     foo();
196 #pragma omp parallel reduction(* : fl)
197 #pragma omp parallel for simd reduction(+ : fl)
198   for (int i = 0; i < 10; ++i)
199     foo();
200 
201   return T();
202 }
203 
204 namespace A {
205 double x;
206 #pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
207 }
208 namespace B {
209 using A::x;
210 }
211 
212 int main(int argc, char **argv) {
213   const int d = 5;       // expected-note 2 {{'d' defined here}}
214   const int da[5] = {0}; // expected-note {{'da' defined here}}
215   int qa[5] = {0};
216   S4 e(4);
217   S5 g(5);
218   int i, z;
219   int &j = i;                      // expected-note 2 {{'j' defined here}}
220   S3 &p = k;                       // expected-note 2 {{'p' defined here}}
221   const int &r = da[i];            // expected-note {{'r' defined here}}
222   int &q = qa[i];                  // expected-note {{'q' defined here}}
223   float fl;
224 #pragma omp parallel for simd reduction // expected-error {{expected '(' after 'reduction'}}
225   for (int i = 0; i < 10; ++i)
226     foo();
227 #pragma omp parallel for simd reduction + // expected-error {{expected '(' after 'reduction'}} expected-warning {{extra tokens at the end of '#pragma omp parallel for simd' are ignored}}
228   for (int i = 0; i < 10; ++i)
229     foo();
230 #pragma omp parallel for simd reduction( // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
231   for (int i = 0; i < 10; ++i)
232     foo();
233 #pragma omp parallel for simd reduction(- // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
234   for (int i = 0; i < 10; ++i)
235     foo();
236 #pragma omp parallel for simd reduction() // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
237   for (int i = 0; i < 10; ++i)
238     foo();
239 #pragma omp parallel for simd reduction(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
240   for (int i = 0; i < 10; ++i)
241     foo();
242 #pragma omp parallel for simd reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
243   for (int i = 0; i < 10; ++i)
244     foo();
245 #pragma omp parallel for simd reduction(foo : argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', '&&', '||', 'min' or 'max'}}
246   for (int i = 0; i < 10; ++i)
247     foo();
248 #pragma omp parallel for simd reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
249   for (int i = 0; i < 10; ++i)
250     foo();
251 #pragma omp parallel for simd reduction(|| : argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name, array element or array section}}
252   for (int i = 0; i < 10; ++i)
253     foo();
254 #pragma omp parallel for simd reduction(~ : argc) // expected-error {{expected unqualified-id}}
255   for (int i = 0; i < 10; ++i)
256     foo();
257 #pragma omp parallel for simd reduction(&& : argc, z)
258   for (int i = 0; i < 10; ++i)
259     foo();
260 #pragma omp parallel for simd reduction(^ : S1) // expected-error {{'S1' does not refer to a value}}
261   for (int i = 0; i < 10; ++i)
262     foo();
263 #pragma omp parallel for simd 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'}}
264   for (int i = 0; i < 10; ++i)
265     foo();
266 #pragma omp parallel for simd 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}}
267   for (int i = 0; i < 10; ++i)
268     foo();
269 #pragma omp parallel for simd reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
270   for (int i = 0; i < 10; ++i)
271     foo();
272 #pragma omp parallel for simd reduction(+ : ba) // expected-error {{const-qualified variable cannot be reduction}}
273   for (int i = 0; i < 10; ++i)
274     foo();
275 #pragma omp parallel for simd reduction(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
276   for (int i = 0; i < 10; ++i)
277     foo();
278 #pragma omp parallel for simd reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}}
279   for (int i = 0; i < 10; ++i)
280     foo();
281 #pragma omp parallel for simd reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
282   for (int i = 0; i < 10; ++i)
283     foo();
284 #pragma omp parallel for simd reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
285   for (int i = 0; i < 10; ++i)
286     foo();
287 #pragma omp parallel for simd reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
288   for (int i = 0; i < 10; ++i)
289     foo();
290 #pragma omp parallel for simd reduction(& : e, g) // expected-error {{calling a private constructor of class 'S4'}} expected-error {{invalid operands to binary expression ('S4' and 'S4')}} expected-error {{calling a private constructor of class 'S5'}} expected-error {{invalid operands to binary expression ('S5' and 'S5')}}
291   for (int i = 0; i < 10; ++i)
292     foo();
293 #pragma omp parallel for simd reduction(+ : h, k, B::x) // expected-error 2 {{threadprivate or thread local variable cannot be reduction}}
294   for (int i = 0; i < 10; ++i)
295     foo();
296 #pragma omp parallel for simd reduction(+ : o) // expected-error {{no viable overloaded '='}}
297   for (int i = 0; i < 10; ++i)
298     foo();
299 #pragma omp parallel for simd private(i), reduction(+ : j), reduction(+ : q) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
300   for (int i = 0; i < 10; ++i)
301     foo();
302 #pragma omp parallel private(k)
303 #pragma omp parallel for simd reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
304   for (int i = 0; i < 10; ++i)
305     foo();
306 #pragma omp parallel for simd reduction(+ : p), reduction(+ : p) // expected-error {{variable can appear only once in OpenMP 'reduction' clause}} expected-note {{previously referenced here}}
307   for (int i = 0; i < 10; ++i)
308     foo();
309 #pragma omp parallel for simd reduction(+ : r) // expected-error {{const-qualified variable cannot be reduction}}
310   for (int i = 0; i < 10; ++i)
311     foo();
312 #pragma omp parallel shared(i)
313 #pragma omp parallel reduction(min : i)
314 #pragma omp parallel for simd reduction(max : j) // expected-error {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
315   for (int i = 0; i < 10; ++i)
316     foo();
317 #pragma omp parallel private(fl)
318 #pragma omp parallel for simd reduction(+ : fl)
319   for (int i = 0; i < 10; ++i)
320     foo();
321 #pragma omp parallel reduction(* : fl)
322 #pragma omp parallel for simd reduction(+ : fl)
323   for (int i = 0; i < 10; ++i)
324     foo();
325   static int m;
326 #pragma omp parallel for simd reduction(+ : m) // OK
327   for (int i = 0; i < 10; ++i)
328     m++;
329 
330   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}}
331 }
332