1 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -o - %s -Wuninitialized
2 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -std=c++98 -o - %s -Wuninitialized
3 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -std=c++11 -o - %s -Wuninitialized
4 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -o - %s -Wuninitialized
5 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -std=c++98 -o - %s -Wuninitialized
6 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -std=c++11 -o - %s -Wuninitialized
7 
8 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -o - %s -Wuninitialized
9 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -std=c++98 -o - %s -Wuninitialized
10 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -std=c++11 -o - %s -Wuninitialized
11 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -o - %s -Wuninitialized
12 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -std=c++98 -o - %s -Wuninitialized
13 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -std=c++11 -o - %s -Wuninitialized
14 
15 extern int omp_default_mem_alloc;
xxx(int argc)16 void xxx(int argc) {
17   int fp; // expected-note {{initialize the variable 'fp' to silence this warning}}
18 #pragma omp parallel for simd reduction(+:fp) // expected-warning {{variable 'fp' is uninitialized when used here}}
19   for (int i = 0; i < 10; ++i)
20     ;
21 }
22 
foo()23 void foo() {
24 }
25 
foobool(int argc)26 bool foobool(int argc) {
27   return argc;
28 }
29 
foobar(int & ref)30 void foobar(int &ref) {
31 #pragma omp parallel for simd reduction(+:ref)
32   for (int i = 0; i < 10; ++i)
33     foo();
34 }
35 
36 struct S1; // expected-note {{declared here}} expected-note 4 {{forward declaration of 'S1'}}
37 extern S1 a;
38 class S2 {
39   mutable int a;
operator +(const S2 & arg)40   S2 &operator+(const S2 &arg) { return (*this); } // expected-note 3 {{implicitly declared private here}}
41 
42 public:
S2()43   S2() : a(0) {}
S2(S2 & s2)44   S2(S2 &s2) : a(s2.a) {}
45   static float S2s; // expected-note 2 {{static data member is predetermined as shared}}
46   static const float S2sc; // expected-note 2 {{'S2sc' declared here}}
47 };
48 const float S2::S2sc = 0;
49 S2 b;                     // expected-note 3 {{'b' defined here}}
50 const S2 ba[5];           // expected-note 2 {{'ba' defined here}}
51 class S3 {
52   int a;
53 
54 public:
55   int b;
S3()56   S3() : a(0) {}
S3(const S3 & s3)57   S3(const S3 &s3) : a(s3.a) {}
operator +(const S3 & arg1)58   S3 operator+(const S3 &arg1) { return arg1; }
59 };
operator +(const S3 & arg1,const S3 & arg2)60 int operator+(const S3 &arg1, const S3 &arg2) { return 5; }
61 S3 c;               // expected-note 3 {{'c' defined here}}
62 const S3 ca[5];     // expected-note 2 {{'ca' defined here}}
63 extern const int f; // expected-note 4 {{'f' declared here}}
64 class S4 {
65   int a;
66   S4(); // expected-note {{implicitly declared private here}}
67   S4(const S4 &s4);
operator +(const S4 & arg)68   S4 &operator+(const S4 &arg) { return (*this); }
69 
70 public:
S4(int v)71   S4(int v) : a(v) {}
72 };
operator &=(S4 & arg1,S4 & arg2)73 S4 &operator&=(S4 &arg1, S4 &arg2) { return arg1; }
74 class S5 {
75   int a;
S5()76   S5() : a(0) {} // expected-note {{implicitly declared private here}}
S5(const S5 & s5)77   S5(const S5 &s5) : a(s5.a) {}
78   S5 &operator+(const S5 &arg);
79 
80 public:
S5(int v)81   S5(int v) : a(v) {}
82 };
83 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}}
84 #if __cplusplus >= 201103L // C++11 or later
85 // expected-note@-2 3 {{candidate function (the implicit move assignment operator) not viable}}
86 #endif
87   int a;
88 
89 public:
S6()90   S6() : a(6) {}
operator int()91   operator int() { return 6; }
92 } o;
93 
94 S3 h, k;
95 #pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
96 
97 template <class T>       // expected-note {{declared here}}
tmain(T argc)98 T tmain(T argc) {
99   const T d = T();       // expected-note 4 {{'d' defined here}}
100   const T da[5] = {T()}; // expected-note 2 {{'da' defined here}}
101   T qa[5] = {T()};
102   T i, z;
103   T &j = i;                        // expected-note 4 {{'j' defined here}}
104   S3 &p = k;                       // expected-note 2 {{'p' defined here}}
105   const T &r = da[(int)i];         // expected-note 2 {{'r' defined here}}
106   T &q = qa[(int)i];               // expected-note 2 {{'q' defined here}}
107   T fl;
108 #pragma omp parallel for simd reduction // expected-error {{expected '(' after 'reduction'}}
109   for (int i = 0; i < 10; ++i)
110     foo();
111 #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}}
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}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
124   for (int i = 0; i < 10; ++i)
125     foo();
126 #pragma omp parallel for simd reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
127   for (int i = 0; i < 10; ++i)
128     foo();
129 #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')}}
130   for (int i = 0; i < 10; ++i)
131     foo();
132 #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')}}
133   for (int i = 0; i < 10; ++i)
134     foo();
135 #pragma omp parallel for simd reduction(|| : argc ? i : argc) // expected-error 2 {{expected variable name, array element or array section}}
136   for (int i = 0; i < 10; ++i)
137     foo();
138 #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'}}
139   for (int i = 0; i < 10; ++i)
140     foo();
141 #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 '('}}
142   for (int i = 0; i < 10; ++i)
143     foo();
144 #pragma omp parallel for simd reduction(^ : T) // expected-error {{'T' does not refer to a value}}
145   for (int i = 0; i < 10; ++i)
146     foo();
147 #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'}}
148   for (int i = 0; i < 10; ++i)
149     foo();
150 #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}}
151   for (int i = 0; i < 10; ++i)
152     foo();
153 #pragma omp parallel for simd reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
154   for (int i = 0; i < 10; ++i)
155     foo();
156 #pragma omp parallel for simd reduction(+ : ba) // 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(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
160   for (int i = 0; i < 10; ++i)
161     foo();
162 #pragma omp parallel for simd reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}} expected-error {{const-qualified variable cannot be reduction}}
163   for (int i = 0; i < 10; ++i)
164     foo();
165 #pragma omp parallel for simd reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
166   for (int i = 0; i < 10; ++i)
167     foo();
168 #pragma omp parallel for simd reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
169   for (int i = 0; i < 10; ++i)
170     foo();
171 #pragma omp parallel for simd reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
172   for (int i = 0; i < 10; ++i)
173     foo();
174 #pragma omp parallel for simd reduction(+ : h, k) // expected-error {{threadprivate or thread local variable cannot be reduction}}
175   for (int i = 0; i < 10; ++i)
176     foo();
177 #pragma omp parallel for simd reduction(+ : o) // expected-error 2 {{no viable overloaded '='}}
178   for (int i = 0; i < 10; ++i)
179     foo();
180 #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}}
181   for (int i = 0; i < 10; ++i)
182     foo();
183 #pragma omp parallel private(k)
184 #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}}
185   for (int i = 0; i < 10; ++i)
186     foo();
187 #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}}
188   for (int i = 0; i < 10; ++i)
189     foo();
190 #pragma omp parallel for simd reduction(+ : r) // expected-error 2 {{const-qualified variable cannot be reduction}}
191   for (int i = 0; i < 10; ++i)
192     foo();
193 #pragma omp parallel shared(i)
194 #pragma omp parallel reduction(min : i)
195 #pragma omp parallel for simd reduction(max : j) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
196   for (int i = 0; i < 10; ++i)
197     foo();
198 #pragma omp parallel private(fl)
199 #pragma omp parallel for simd reduction(+ : fl)
200   for (int i = 0; i < 10; ++i)
201     foo();
202 #pragma omp parallel reduction(* : fl)
203 #pragma omp parallel for simd reduction(+ : fl)
204   for (int i = 0; i < 10; ++i)
205     foo();
206 
207   return T();
208 }
209 
210 namespace A {
211 double x;
212 #pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
213 }
214 namespace B {
215 using A::x;
216 }
217 
main(int argc,char ** argv)218 int main(int argc, char **argv) {
219   const int d = 5;       // expected-note 2 {{'d' defined here}}
220   const int da[5] = {0}; // expected-note {{'da' defined here}}
221   int qa[5] = {0};
222   S4 e(4);
223   S5 g(5);
224   int i, z;
225   int &j = i;                      // expected-note 2 {{'j' defined here}}
226   S3 &p = k;                       // expected-note 2 {{'p' defined here}}
227   const int &r = da[i];            // expected-note {{'r' defined here}}
228   int &q = qa[i];                  // expected-note {{'q' defined here}}
229   float fl;
230 #pragma omp parallel for simd reduction // expected-error {{expected '(' after 'reduction'}}
231   for (int i = 0; i < 10; ++i)
232     foo();
233 #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}}
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}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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(*) // expected-warning {{missing ':' after reduction identifier - ignoring}} expected-error {{expected expression}}
246   for (int i = 0; i < 10; ++i)
247     foo();
248 #pragma omp parallel for simd reduction(\) // expected-error {{expected unqualified-id}} expected-warning {{missing ':' after reduction identifier - ignoring}}
249   for (int i = 0; i < 10; ++i)
250     foo();
251 #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'}}
252   for (int i = 0; i < 10; ++i)
253     foo();
254 #pragma omp parallel for simd reduction(| : argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
255   for (int i = 0; i < 10; ++i)
256     foo();
257 #pragma omp parallel for simd reduction(|| : argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name, array element or array section}}
258   for (int i = 0; i < 10; ++i)
259     foo();
260 #pragma omp parallel for simd reduction(~ : argc) // expected-error {{expected unqualified-id}}
261   for (int i = 0; i < 10; ++i)
262     foo();
263 #pragma omp parallel for simd reduction(&& : argc, z)
264   for (int i = 0; i < 10; ++i)
265     foo();
266 #pragma omp parallel for simd reduction(^ : S1) // expected-error {{'S1' does not refer to a value}}
267   for (int i = 0; i < 10; ++i)
268     foo();
269 #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'}}
270   for (int i = 0; i < 10; ++i)
271     foo();
272 #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}}
273   for (int i = 0; i < 10; ++i)
274     foo();
275 #pragma omp parallel for simd reduction(max : h.b) // expected-error {{expected variable name, array element or array section}}
276   for (int i = 0; i < 10; ++i)
277     foo();
278 #pragma omp parallel for simd reduction(+ : ba) // 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(* : ca) // expected-error {{const-qualified variable cannot be reduction}}
282   for (int i = 0; i < 10; ++i)
283     foo();
284 #pragma omp parallel for simd reduction(- : da) // expected-error {{const-qualified variable cannot be reduction}}
285   for (int i = 0; i < 10; ++i)
286     foo();
287 #pragma omp parallel for simd reduction(^ : fl) // expected-error {{invalid operands to binary expression ('float' and 'float')}}
288   for (int i = 0; i < 10; ++i)
289     foo();
290 #pragma omp parallel for simd reduction(&& : S2::S2s) // expected-error {{shared variable cannot be reduction}}
291   for (int i = 0; i < 10; ++i)
292     foo();
293 #pragma omp parallel for simd reduction(&& : S2::S2sc) // expected-error {{const-qualified variable cannot be reduction}}
294   for (int i = 0; i < 10; ++i)
295     foo();
296 #pragma omp parallel for simd 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')}}
297   for (int i = 0; i < 10; ++i)
298     foo();
299 #pragma omp parallel for simd reduction(+ : h, k, B::x) // expected-error 2 {{threadprivate or thread local variable cannot be reduction}}
300   for (int i = 0; i < 10; ++i)
301     foo();
302 #pragma omp parallel for simd reduction(+ : o) // expected-error {{no viable overloaded '='}}
303   for (int i = 0; i < 10; ++i)
304     foo();
305 #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}}
306   for (int i = 0; i < 10; ++i)
307     foo();
308 #pragma omp parallel private(k)
309 #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}}
310   for (int i = 0; i < 10; ++i)
311     foo();
312 #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}}
313   for (int i = 0; i < 10; ++i)
314     foo();
315 #pragma omp parallel for simd reduction(+ : r) // expected-error {{const-qualified variable cannot be reduction}}
316   for (int i = 0; i < 10; ++i)
317     foo();
318 #pragma omp parallel shared(i)
319 #pragma omp parallel reduction(min : i)
320 #pragma omp parallel for simd reduction(max : j) // expected-error {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
321   for (int i = 0; i < 10; ++i)
322     foo();
323 #pragma omp parallel private(fl)
324 #pragma omp parallel for simd reduction(+ : fl)
325   for (int i = 0; i < 10; ++i)
326     foo();
327 #pragma omp parallel reduction(* : fl)
328 #pragma omp parallel for simd reduction(+ : fl)
329   for (int i = 0; i < 10; ++i)
330     foo();
331   static int m;
332 #pragma omp parallel for simd reduction(+ : m) // OK
333   for (int i = 0; i < 10; ++i)
334     m++;
335 #pragma omp parallel for simd reduction(task, + : m) // omp45-error 2 {{expected expression}} omp45-warning {{missing ':' after reduction identifier - ignoring}} omp50-error {{'reduction' clause with 'task' modifier allowed only on non-simd parallel or worksharing constructs}}
336   for (int i = 0; i < 10; ++i)
337     m++;
338 
339   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}}
340 }
341