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shared_ptr_base.h (__shared_count(unique_ptr&&)): Check for nullptr (LWG 2415).

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* include/bits/shared_ptr_base.h (__shared_count(unique_ptr&&)): Check
	for nullptr (LWG 2415).
	* testsuite/20_util/shared_ptr/cons/unique_ptr_deleter.cc: Test
	construction from empty unique_ptr.
	* testsuite/20_util/shared_ptr/cons/43820_neg.cc: Adjust dg-error.
	* testsuite/20_util/shared_ptr/cons/void_neg.cc: Likewise.

From-SVN: r223170
This commit is contained in:
Jonathan Wakely 2015-05-13 17:42:18 +01:00 committed by Jonathan Wakely
parent b7dce216c7
commit 098aac94ef
5 changed files with 28 additions and 4 deletions
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7
libstdc++-v3/ChangeLog
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@ -1,5 +1,12 @@
2015-05-13 Jonathan Wakely <jwakely@redhat.com>
* include/bits/shared_ptr_base.h (__shared_count(unique_ptr&&)): Check
for nullptr (LWG 2415).
* testsuite/20_util/shared_ptr/cons/unique_ptr_deleter.cc: Test
construction from empty unique_ptr.
* testsuite/20_util/shared_ptr/cons/43820_neg.cc: Adjust dg-error.
* testsuite/20_util/shared_ptr/cons/void_neg.cc: Likewise.
* include/bits/stl_raw_storage_iter.h (raw_storage_iterator::base()):
Define (LWG 2454).
* testsuite/20_util/raw_storage_iterator/base.cc: New.

5
libstdc++-v3/include/bits/shared_ptr_base.h
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@ -632,6 +632,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
explicit
__shared_count(std::unique_ptr<_Tp, _Del>&& __r) : _M_pi(0)
{
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 2415. Inconsistency between unique_ptr and shared_ptr
if (__r.get() == nullptr)
return;
using _Ptr = typename unique_ptr<_Tp, _Del>::pointer;
using _Del2 = typename conditional<is_reference<_Del>::value,
reference_wrapper<typename remove_reference<_Del>::type>,

2
libstdc++-v3/testsuite/20_util/shared_ptr/cons/43820_neg.cc
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@ -32,7 +32,7 @@ void test01()
{
X* px = 0;
std::shared_ptr<X> p1(px); // { dg-error "here" }
// { dg-error "incomplete" "" { target *-*-* } 886 }
// { dg-error "incomplete" "" { target *-*-* } 891 }
std::shared_ptr<X> p9(ap()); // { dg-error "here" }
// { dg-error "incomplete" "" { target *-*-* } 307 }

16
libstdc++-v3/testsuite/20_util/shared_ptr/cons/unique_ptr_deleter.cc
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@ -34,7 +34,7 @@ int D::count = 0;
// 20.7.12.2.1 shared_ptr constructors [util.smartptr.shared.const]
// Construction from unique_ptr
int
void
test01()
{
bool test __attribute__((unused)) = true;
@ -47,13 +47,25 @@ test01()
VERIFY( sp.use_count() == 1 );
}
VERIFY( D::count == 1 );
}
return 0;
void
test02()
{
bool test __attribute__((unused)) = true;
D::count = 0;
std::unique_ptr<A, D> up;
{
std::shared_ptr<A> sp = std::move(up);
}
VERIFY( D::count == 0 ); // LWG 2415
}
int
main()
{
test01();
test02();
return 0;
}

2
libstdc++-v3/testsuite/20_util/shared_ptr/cons/void_neg.cc
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@ -25,5 +25,5 @@
void test01()
{
std::shared_ptr<void> p((void*)nullptr); // { dg-error "here" }
// { dg-error "incomplete" "" { target *-*-* } 885 }
// { dg-error "incomplete" "" { target *-*-* } 890 }
}