File: initlist-lifetime1.C

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gcc-arm-none-eabi 15%3A8-2019-q3-1
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// Test that we properly extend the lifetime of the initializer_list
// array even if the initializer_list is a subobject.
// { dg-do run { target c++11 } }

#include <initializer_list>

extern "C" void abort();
bool ok;

bool do_throw;

struct A {
  A(int) { if (do_throw) throw 42; }
  ~A() { if (!ok) abort(); }
};

typedef std::initializer_list<A> AL;
typedef std::initializer_list<AL> AL2;
typedef std::initializer_list<AL2> AL3;

struct B {
  AL al;
  const AL& alr;
};

volatile bool always_false = false;

int main(int argc, const char** argv)
{
  do_throw = always_false;	// always false, but optimizer can't tell
  AL ar[] = {{1,2},{3,4}};
  B b = {{5,6},{7,8}};
  AL3 al3 = {{{1},{2},{3}}};
  ok = true;
}