52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
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// PR c++/86291
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// { dg-do run }
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// { dg-additional-options "-std=c++11" }
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extern "C" void abort ();
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struct I
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{
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using size_type = __SIZE_TYPE__;
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using difference_type = __PTRDIFF_TYPE__;
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using value_type = int;
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using reference = int &;
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using pointer = int *;
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static I begin () { return I{}; }
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static I end () { I res; res.pos = res.num; return res; }
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I &operator++ () { ++pos; return *this; }
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reference operator* () const { return val; }
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I &operator+= (size_type diff) { pos += diff; return *this; }
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friend bool operator< (const I &a, const I &b) { return a.pos < b.pos; }
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friend difference_type operator- (const I &a, const I &b) { return a.pos - b.pos; }
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size_type pos = 0;
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size_type num = 1;
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mutable int val = 0;
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};
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int c;
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int
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main ()
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{
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#pragma omp parallel for collapse(10)
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for (auto i = I::begin (); i < I::end (); ++i)
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for (auto j = I::begin (); j < I::end (); ++j)
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for (auto k = I::begin (); k < I::end (); ++k)
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for (auto l = I::begin (); l < I::end (); ++l)
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for (auto m = I::begin (); m < I::end (); ++m)
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for (auto n = I::begin (); n < I::end (); ++n)
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for (auto o = I::begin (); o < I::end (); ++o)
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for (auto p = I::begin (); p < I::end (); ++p)
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for (auto q = I::begin (); q < I::end (); ++q)
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for (auto r = I::begin (); r < I::end (); ++r)
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{
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if (*i != 0 || *j != 0 || *k != 0 || *l != 0 || *m != 0
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|| *n != 0 || *o != 0 || *p != 0 || *q != 0 || *r != 0)
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abort ();
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#pragma omp atomic
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c++;
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}
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if (c != 1)
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abort ();
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}
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