@@ -454,6 +454,9 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
__cur_node < this->_M_impl._M_finish._M_node;
++__cur_node)
{
+ if (__n < _S_buffer_size())
+ __builtin_unreachable(); // See PR 100516
+
_ForwardIterator __mid = __first;
std::advance(__mid, _S_buffer_size());
std::__uninitialized_copy_a(__first, __mid, *__cur_node,
new file mode 100644
@@ -0,0 +1,14 @@
+// { dg-options "-O2 -Wstringop-overread" }
+// { dg-do compile { target c++11 } }
+
+// Bug 100516
+// Unexpected -Wstringop-overread in deque<char> initialization from empty
+// initializer_list
+
+#include <deque>
+
+void f()
+{
+ std::initializer_list<char> il{};
+ std::deque<char>{il};
+}