gcc/libgomp/testsuite/libgomp.c/critical-2.c

36 lines
618 B
C

// { dg-do run }
// Test several constructs within a parallel. At one point in development,
// the critical directive clobbered the shared clause of the parallel.
#include <omp.h>
#include <stdlib.h>
#define N 2000
int main()
{
int A[N];
int nthreads;
int i;
#pragma omp parallel shared (A, nthreads)
{
#pragma omp master
nthreads = omp_get_num_threads ();
#pragma omp for
for (i = 0; i < N; i++)
A[i] = 0;
#pragma omp critical
for (i = 0; i < N; i++)
A[i] += 1;
}
for (i = 0; i < N; i++)
if (A[i] != nthreads)
abort ();
return 0;
}