* [PATCH] Fix vector::_Temporary_value::_M_ptr
@ 2018-09-03 14:25 Jonathan Wakely
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From: Jonathan Wakely @ 2018-09-03 14:25 UTC (permalink / raw)
To: libstdc++, gcc-patches
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The pointer argument to allocator_traits::construct and
allocator_traits::destroy should be a raw pointer, not the allocator's
pointer type. _Temporary_value::_M_ptr was returning the wrong type.
* include/bits/stl_vector.h (vector::_Temporary_value::_M_ptr):
Return raw pointer not allocator's pointer type.
(vector::_Temporary_value::_M_val): Use _M_ptr.
Tested x86_64-lixnu, committed to trunk.
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commit 5368f71250324a046e5f026fef33a3e12176c243
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Mon Sep 3 15:01:32 2018 +0100
Fix vector::_Temporary_value::_M_ptr
The pointer argument to allocator_traits::construct and
allocator_traits::destroy should be a raw pointer, not the allocator's
pointer type. _Temporary_value::_M_ptr was returning the wrong type.
* include/bits/stl_vector.h (vector::_Temporary_value::_M_ptr):
Return raw pointer not allocator's pointer type.
(vector::_Temporary_value::_M_val): Use _M_ptr.
diff --git a/libstdc++-v3/include/bits/stl_vector.h b/libstdc++-v3/include/bits/stl_vector.h
index 6bb75b7f8fd..47856473107 100644
--- a/libstdc++-v3/include/bits/stl_vector.h
+++ b/libstdc++-v3/include/bits/stl_vector.h
@@ -1667,11 +1667,11 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
{ _Alloc_traits::destroy(_M_this->_M_impl, _M_ptr()); }
value_type&
- _M_val() { return *reinterpret_cast<_Tp*>(&__buf); }
+ _M_val() { return *_M_ptr(); }
private:
- pointer
- _M_ptr() { return pointer_traits<pointer>::pointer_to(_M_val()); }
+ _Tp*
+ _M_ptr() { return reinterpret_cast<_Tp*>(&__buf); }
vector* _M_this;
typename aligned_storage<sizeof(_Tp), alignof(_Tp)>::type __buf;
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2018-09-03 14:25 [PATCH] Fix vector::_Temporary_value::_M_ptr Jonathan Wakely
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