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// { dg-do run }
// { dg-require-effective-target tls_runtime }
#include <omp.h>
#include <assert.h>
#define N 10
#define THR 4
struct B
{
B& operator=(const B &);
};
static B *base;
static B *threadbase;
static int singlethread;
#pragma omp threadprivate(threadbase)
static unsigned cmask[THR];
B& B::operator= (const B &b)
{
unsigned sindex = &b - base;
unsigned tindex = this - threadbase;
assert(sindex < N);
assert(sindex == tindex);
cmask[omp_get_thread_num ()] |= 1u << tindex;
return *this;
}
void foo()
{
#pragma omp parallel
{
B b[N];
threadbase = b;
#pragma omp single copyprivate(b)
{
assert(omp_get_num_threads () == THR);
singlethread = omp_get_thread_num ();
base = b;
}
}
}
int main()
{
omp_set_dynamic (0);
omp_set_num_threads (THR);
foo();
for (int i = 0; i < THR; ++i)
if (i == singlethread)
assert(cmask[singlethread] == 0);
else
assert(cmask[i] == (1u << N) - 1);
return 0;
}
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