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// { dg-options "-std=c++0x" }

// PR c++/50958

typedef decltype(sizeof(0)) size_type;

constexpr size_type

cstrlen_impl(const char* s, size_type i)

{

  return s[i] ? cstrlen_impl(s, i + 1) : i;

}

constexpr size_type

cstrlen(const char* s)

{

  return s ? cstrlen_impl(s, 0) : throw 0;

}

constexpr size_type

operator "" _lenraw(const char* digits)

{

  return cstrlen(digits);

}

static_assert(123_lenraw == 3, "Ouch");

static_assert(1_lenraw == 1, "Ouch");

static_assert(012_lenraw == 3, "Ouch");

static_assert(0_lenraw == 1, "Ouch");