[Bug c++/55722] failed static_assert won't trigger a second time

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55722



--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-12-19 
20:14:08 UTC ---

I've just encountered this bug again when trying to replace



      constexpr unique_ptr(nullptr_t) noexcept

      : _M_t()

      { static_assert(!std::is_pointer<deleter_type>::value,

              "constructed with null function pointer deleter"); }



with



      constexpr unique_ptr(nullptr_t) noexcept : unique_ptr() { }



which causes a FAIL in the testsuite because now the constructor triggers the

static_assert in the default constructor which already FAILed earlier in the

file and so doesn't fire again.