parallel_master_message.cpp
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// RUN: %clang_cc1 -verify -fopenmp %s -Wuninitialized
// RUN: %clang_cc1 -verify -fopenmp-simd %s -Wuninitialized
void xxx(int argc) {
int x; // expected-note {{initialize the variable 'x' to silence this warning}}
#pragma omp parallel master
argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
}
#pragma omp parallel master // expected-error {{unexpected OpenMP directive '#pragma omp parallel master'}}
int foo() {
return 0;
}
int a;
struct S;
S& bar();
int main(int argc, char **argv) {
#pragma omp parallel master nowait // expected-error {{unexpected OpenMP clause 'nowait' in directive '#pragma omp parallel master'}}
#pragma omp parallel master unknown // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
foo();
{
#pragma omp master
} // expected-error {{expected statement}}
{
#pragma omp parallel master
} // expected-error {{expected statement}}
S &s = bar();
#pragma omp parallel master
(void)&s;
#pragma omp parallel master { // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
foo();
#pragma omp parallel master ( // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
foo();
#pragma omp parallel master [ // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
foo();
#pragma omp parallel master ] // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
foo();
#pragma omp parallel master ) // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
foo();
#pragma omp parallel master } // expected-warning {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
foo();
#pragma omp parallel master
// expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel master' are ignored}}
#pragma omp parallel master unknown()
foo();
L1:
foo();
#pragma omp parallel master
;
#pragma omp parallel master
{
for (int i = 0; i < 10; ++i) {
switch(argc) {
case (0):
#pragma omp parallel master
{
foo();
break; // expected-error {{'break' statement not in loop or switch statement}}
continue; // expected-error {{'continue' statement not in loop statement}}
}
default:
break;
}
}
goto L1; // expected-error {{use of undeclared label 'L1'}}
argc++;
}
#pragma omp parallel master default(none) // expected-note 2 {{explicit data sharing attribute requested here}}
{
++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
++a; // expected-error {{variable 'a' must have explicitly specified data sharing attributes}}
}
goto L2; // expected-error {{use of undeclared label 'L2'}}
#pragma omp parallel master
L2:
foo();
#pragma omp parallel master
{
return 1; // expected-error {{cannot return from OpenMP region}}
}
return 0;
}