@@ -30,6 +30,7 @@
#if __cplusplus > 202002L && _GLIBCXX_HAVE_STACKTRACE
#include <compare>
+#include <new>
#include <string>
#include <sstream>
#include <bits/stl_algobase.h>
@@ -589,23 +590,43 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
return std::min(__size_max, __alloc_max);
}
+#if __has_builtin(__builtin_operator_new) >= 201802L
+# define _GLIBCXX_OPERATOR_NEW __builtin_operator_new
+# define _GLIBCXX_OPERATOR_DELETE __builtin_operator_delete
+#else
+# define _GLIBCXX_OPERATOR_NEW ::operator new
+# define _GLIBCXX_OPERATOR_DELETE ::operator delete
+#endif
+
// Precondition: _M_frames == nullptr && __n != 0
pointer
_M_allocate(allocator_type& __alloc, size_type __n) noexcept
{
if (__n <= _S_max_size(__alloc)) [[likely]]
{
- __try
+ if constexpr (is_same_v<allocator_type, allocator<value_type>>)
{
- _M_frames = __alloc.allocate(__n);
- _M_capacity = __n;
- return _M_frames;
+ __n *= sizeof(value_type);
+ void* const __p = _GLIBCXX_OPERATOR_NEW (__n, nothrow_t{});
+ if (__p == nullptr) [[unlikely]]
+ return nullptr;
+ _M_frames = static_cast<pointer>(__p);
}
- __catch (...)
+ else
{
+ __try
+ {
+ _M_frames = __alloc.allocate(__n);
+ }
+ __catch (const std::bad_alloc&)
+ {
+ return nullptr;
+ }
}
+ _M_capacity = __n;
+ return _M_frames;
}
- return nullptr;;
+ return nullptr;
}
void
@@ -613,12 +634,19 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{
if (_M_capacity)
{
- __alloc.deallocate(_M_frames, _M_capacity);
+ if constexpr (is_same_v<allocator_type, allocator<value_type>>)
+ _GLIBCXX_OPERATOR_DELETE (static_cast<void*>(_M_frames),
+ _M_capacity * sizeof(value_type));
+ else
+ __alloc.deallocate(_M_frames, _M_capacity);
_M_frames = nullptr;
_M_capacity = 0;
}
}
+#undef _GLIBCXX_OPERATOR_DELETE
+#undef _GLIBCXX_OPERATOR_NEW
+
void
_M_destroy() noexcept
{