_LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT
{return _VSTD::addressof(__x);}
_LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0)
- {return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp)));}
+ {
+ if (__n > max_size())
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ throw bad_alloc();
+#else
+ assert(!"allocator<T>::allocate::bad_alloc");
+#endif
+ return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp)));
+ }
_LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT
{_VSTD::__deallocate((void*)__p);}
_LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT
_LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT
{return _VSTD::addressof(__x);}
_LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0)
- {return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp)));}
+ {
+ if (__n > max_size())
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ throw bad_alloc();
+#else
+ assert(!"allocator<const T>::allocate::bad_alloc");
+#endif
+ return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp)));
+ }
_LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT
{_VSTD::__deallocate((void*)__p);}
_LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT
--- /dev/null
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// allocator:
+// pointer allocate(size_type n, allocator<void>::const_pointer hint=0);
+
+#include <memory>
+#include <cassert>
+
+template <typename T>
+void test_max(size_t count)
+{
+ std::allocator<T> a;
+ try { a.allocate( count ); }
+ catch ( const std::bad_alloc &) { return ; }
+ assert (false);
+}
+
+int main()
+{
+ { // Bug 26812 -- allocating too large
+ typedef double T;
+ std::allocator<T> a;
+ test_max<T> (a.max_size() + 1); // just barely too large
+ test_max<T> (a.max_size() * 2); // significantly too large
+ test_max<T> (((size_t) -1) / sizeof(T) + 1); // multiply will overflow
+ test_max<T> ((size_t) -1); // way too large
+ }
+
+ {
+ typedef const double T;
+ std::allocator<T> a;
+ test_max<T> (a.max_size() + 1); // just barely too large
+ test_max<T> (a.max_size() * 2); // significantly too large
+ test_max<T> (((size_t) -1) / sizeof(T) + 1); // multiply will overflow
+ test_max<T> ((size_t) -1); // way too large
+ }
+}