Re: [PATCH] Fix overflow handling in std::align

2020-09-22 Thread Jonathan Wakely via Gcc-patches 

On 21/09/20 15:50 +0100, Jonathan Wakely wrote:

On 21/09/20 10:42 -0400, Glen Fernandes via Libstdc++ wrote:

On Mon, Sep 14, 2020 at 5:44 PM Thomas Rodgers  wrote:

On Sep 14, 2020, at 7:30 AM, Ville Voutilainen  wrote:

On Mon, 14 Sep 2020 at 15:49, Glen Fernandes  wrote:

Sounds like a good idea. Updated patch attached.


Looks good to me.


Agree.


Rebased patch on latest changes to bits/align.h.


Oh nice, I was about to do that myself.

I'll get the patch committed today, thanks!


It's still today by my clock, althought it might be broken ;-)

Pushed to master. Thanks for the patch.

N.B. GCC no longer requires updates to the ChangeLog files. Those
files now get auto-generated from the Git commit logs (which still
need to be in the same format, but you don't modify the ChangeLog
directly).

Re: [PATCH] Fix overflow handling in std::align

2020-09-21 Thread Jonathan Wakely via Gcc-patches 

On 21/09/20 10:42 -0400, Glen Fernandes via Libstdc++ wrote:

On Mon, Sep 14, 2020 at 5:44 PM Thomas Rodgers  wrote:

> On Sep 14, 2020, at 7:30 AM, Ville Voutilainen  wrote:
>
> On Mon, 14 Sep 2020 at 15:49, Glen Fernandes  wrote:
>> Sounds like a good idea. Updated patch attached.
>
> Looks good to me.

Agree.


Rebased patch on latest changes to bits/align.h.


Oh nice, I was about to do that myself.

I'll get the patch committed today, thanks!



Fix overflow handling in align

2020-09-20  Glen Joseph Fernandes  

   * include/bits/align.h (align): Fix overflow handling.
   * testsuite/20_util/align/3.cc: New tests.

Glen



commit f18840a2b03e927e296adef8b1a13fdf255e1828
Author: Glen Joseph Fernandes 
Date:   Mon Sep 14 01:21:27 2020 -0400

   Fix overflow handling in align

   2020-09-20  Glen Joseph Fernandes  

   * include/bits/align.h (align): Fix overflow handling.
   * testsuite/20_util/align/3.cc: New tests.

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 28b66ccca7a..a26faef547e 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2020-09-20  Glen Joseph Fernandes  
+
+* include/bits/align.h (align): Fix overflow handling.
+* testsuite/20_util/align/3.cc: New tests.
+
2020-09-20  Jonathan Wakely  

PR libstdc++/97101
diff --git a/libstdc++-v3/include/bits/align.h 
b/libstdc++-v3/include/bits/align.h
index faa92bec2f8..597b4103ed8 100644
--- a/libstdc++-v3/include/bits/align.h
+++ b/libstdc++-v3/include/bits/align.h
@@ -60,10 +60,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
inline void*
align(size_t __align, size_t __size, void*& __ptr, size_t& __space) noexcept
{
+  if (__space < __size)
+return nullptr;
  const auto __intptr = reinterpret_cast(__ptr);
  const auto __aligned = (__intptr - 1u + __align) & -__align;
  const auto __diff = __aligned - __intptr;
-  if ((__size + __diff) > __space)
+  if (__diff > (__space - __size))
return nullptr;
  else
{
diff --git a/libstdc++-v3/testsuite/20_util/align/3.cc 
b/libstdc++-v3/testsuite/20_util/align/3.cc
new file mode 100644
index 000..74116a59867
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/align/3.cc
@@ -0,0 +1,53 @@
+// { dg-do run { target c++11 } }
+
+// 2020-09-20 Glen Joseph Fernandes 
+
+// Copyright (C) 2020 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software
+// Foundation; either version 3, or (at your option) any later
+// version.
+
+// This library is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this library; see the file COPYING3.  If not see
+// .
+
+// C++11 [ptr.align] (20.6.5): std::align
+
+#include 
+#include 
+
+void test01()
+{
+  void* p1 = reinterpret_cast(5);
+  void* p2 = p1;
+  std::size_t s1 = 3072;
+  std::size_t s2 = s1;
+  VERIFY(std::align(1024, static_cast(-1), p1, s1) == nullptr);
+  VERIFY(p1 == p2);
+  VERIFY(s1 == s2);
+}
+
+void test02()
+{
+  void* p1 = reinterpret_cast(1);
+  void* p2 = p1;
+  std::size_t s1 = -1;
+  std::size_t s2 = s1;
+  VERIFY(std::align(2, static_cast(-1), p1, s1) == nullptr);
+  VERIFY(p1 == p2);
+  VERIFY(s1 == s2);
+}
+
+int main()
+{
+  test01();
+  test02();
+}

Re: [PATCH] Fix overflow handling in std::align

2020-09-21 Thread Glen Fernandes via Gcc-patches 
On Mon, Sep 14, 2020 at 5:44 PM Thomas Rodgers  wrote:
> > On Sep 14, 2020, at 7:30 AM, Ville Voutilainen  wrote:
> >
> > On Mon, 14 Sep 2020 at 15:49, Glen Fernandes  wrote:
> >> Sounds like a good idea. Updated patch attached.
> >
> > Looks good to me.
>
> Agree.

Rebased patch on latest changes to bits/align.h.


Fix overflow handling in align

2020-09-20  Glen Joseph Fernandes  

* include/bits/align.h (align): Fix overflow handling.
* testsuite/20_util/align/3.cc: New tests.

Glen
commit f18840a2b03e927e296adef8b1a13fdf255e1828
Author: Glen Joseph Fernandes 
Date:   Mon Sep 14 01:21:27 2020 -0400

Fix overflow handling in align

2020-09-20  Glen Joseph Fernandes  

* include/bits/align.h (align): Fix overflow handling.
* testsuite/20_util/align/3.cc: New tests.

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 28b66ccca7a..a26faef547e 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2020-09-20  Glen Joseph Fernandes  
+
+* include/bits/align.h (align): Fix overflow handling.
+* testsuite/20_util/align/3.cc: New tests.
+
 2020-09-20  Jonathan Wakely  
 
PR libstdc++/97101
diff --git a/libstdc++-v3/include/bits/align.h 
b/libstdc++-v3/include/bits/align.h
index faa92bec2f8..597b4103ed8 100644
--- a/libstdc++-v3/include/bits/align.h
+++ b/libstdc++-v3/include/bits/align.h
@@ -60,10 +60,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 inline void*
 align(size_t __align, size_t __size, void*& __ptr, size_t& __space) noexcept
 {
+  if (__space < __size)
+return nullptr;
   const auto __intptr = reinterpret_cast(__ptr);
   const auto __aligned = (__intptr - 1u + __align) & -__align;
   const auto __diff = __aligned - __intptr;
-  if ((__size + __diff) > __space)
+  if (__diff > (__space - __size))
 return nullptr;
   else
 {
diff --git a/libstdc++-v3/testsuite/20_util/align/3.cc 
b/libstdc++-v3/testsuite/20_util/align/3.cc
new file mode 100644
index 000..74116a59867
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/align/3.cc
@@ -0,0 +1,53 @@
+// { dg-do run { target c++11 } }
+
+// 2020-09-20 Glen Joseph Fernandes 
+
+// Copyright (C) 2020 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software
+// Foundation; either version 3, or (at your option) any later
+// version.
+
+// This library is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this library; see the file COPYING3.  If not see
+// .
+
+// C++11 [ptr.align] (20.6.5): std::align
+
+#include 
+#include 
+
+void test01()
+{
+  void* p1 = reinterpret_cast(5);
+  void* p2 = p1;
+  std::size_t s1 = 3072;
+  std::size_t s2 = s1;
+  VERIFY(std::align(1024, static_cast(-1), p1, s1) == nullptr);
+  VERIFY(p1 == p2);
+  VERIFY(s1 == s2);
+}
+
+void test02()
+{
+  void* p1 = reinterpret_cast(1);
+  void* p2 = p1;
+  std::size_t s1 = -1;
+  std::size_t s2 = s1;
+  VERIFY(std::align(2, static_cast(-1), p1, s1) == nullptr);
+  VERIFY(p1 == p2);
+  VERIFY(s1 == s2);
+}
+
+int main()
+{
+  test01();
+  test02();
+}

Re: [PATCH] Fix overflow handling in std::align

2020-09-14 Thread Thomas Rodgers 



> On Sep 14, 2020, at 7:30 AM, Ville Voutilainen via Libstdc++ 
>  wrote:
> 
> On Mon, 14 Sep 2020 at 15:49, Glen Fernandes  wrote:
>> 
>> On Mon, Sep 14, 2020 at 5:52 AM Ville Voutilainen wrote:
>>> On Mon, 14 Sep 2020 at 12:51, Ville Voutilainen
>>> wrote:
 On Mon, 14 Sep 2020 at 09:18, Glen Fernandes
>>> wrote:
> Edit; Correct patch this time.
> 
> Fix overflow handling in align
 
 Should the test verify that space is unmodified when nullptr is returned?
>>> 
>>> ..and same for ptr.
>> 
>> Sounds like a good idea. Updated patch attached.
> 
> Looks good to me.

Agree.

Re: [PATCH] Fix overflow handling in std::align

2020-09-14 Thread Ville Voutilainen via Gcc-patches 
On Mon, 14 Sep 2020 at 15:49, Glen Fernandes  wrote:
>
> On Mon, Sep 14, 2020 at 5:52 AM Ville Voutilainen wrote:
> > On Mon, 14 Sep 2020 at 12:51, Ville Voutilainen
> > wrote:
> > > On Mon, 14 Sep 2020 at 09:18, Glen Fernandes
> >  wrote:
> > > > Edit; Correct patch this time.
> > > >
> > > > Fix overflow handling in align
> > >
> > > Should the test verify that space is unmodified when nullptr is returned?
> >
> > ..and same for ptr.
>
> Sounds like a good idea. Updated patch attached.

Looks good to me.

Re: [PATCH] Fix overflow handling in std::align

2020-09-14 Thread Glen Fernandes via Gcc-patches 
On Mon, Sep 14, 2020 at 5:52 AM Ville Voutilainen wrote:
> On Mon, 14 Sep 2020 at 12:51, Ville Voutilainen
> wrote:
> > On Mon, 14 Sep 2020 at 09:18, Glen Fernandes
>  wrote:
> > > Edit; Correct patch this time.
> > >
> > > Fix overflow handling in align
> >
> > Should the test verify that space is unmodified when nullptr is returned?
>
> ..and same for ptr.

Sounds like a good idea. Updated patch attached.

Glen
commit 5ebb97628f888bbc8e6617f2a7eea83aa40c1f37
Author: Glen Joseph Fernandes 
Date:   Mon Sep 14 01:21:27 2020 -0400

Fix overflow handling in align

2020-09-12  Glen Joseph Fernandes  

* include/bits/align.h (align): Fix overflow handling.
* testsuite/20_util/align/3.cc: New tests.

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 0878f31562e..e25770ce5ca 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2020-09-12  Glen Joseph Fernandes  
+
+* include/bits/align.h (align): Fix overflow handling.
+* testsuite/20_util/align/3.cc: New tests.
+
 2020-09-11  Thomas Rodgers  
 
* include/std/memory: Move #include  inside C++11
diff --git a/libstdc++-v3/include/bits/align.h 
b/libstdc++-v3/include/bits/align.h
index c3267f22934..b9b81fd785d 100644
--- a/libstdc++-v3/include/bits/align.h
+++ b/libstdc++-v3/include/bits/align.h
@@ -60,6 +60,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 inline void*
 align(size_t __align, size_t __size, void*& __ptr, size_t& __space) noexcept
 {
+  if (__space < __size)
+return nullptr;
 #ifdef _GLIBCXX_USE_C99_STDINT_TR1
   const auto __intptr = reinterpret_cast(__ptr);
 #else
@@ -70,7 +72,7 @@ align(size_t __align, size_t __size, void*& __ptr, size_t& 
__space) noexcept
 #endif
   const auto __aligned = (__intptr - 1u + __align) & -__align;
   const auto __diff = __aligned - __intptr;
-  if ((__size + __diff) > __space)
+  if (!(__diff <= (__space - __size)))
 return nullptr;
   else
 {
diff --git a/libstdc++-v3/testsuite/20_util/align/3.cc 
b/libstdc++-v3/testsuite/20_util/align/3.cc
new file mode 100644
index 000..39bff3472ce
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/align/3.cc
@@ -0,0 +1,53 @@
+// { dg-do run { target c++11 } }
+
+// 2020-09-12 Glen Joseph Fernandes 
+
+// Copyright (C) 2020 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software
+// Foundation; either version 3, or (at your option) any later
+// version.
+
+// This library is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this library; see the file COPYING3.  If not see
+// .
+
+// C++11 [ptr.align] (20.6.5): std::align
+
+#include 
+#include 
+
+void test01()
+{
+  void* p1 = reinterpret_cast(5);
+  void* p2 = p1;
+  std::size_t s1 = 3072;
+  std::size_t s2 = s1;
+  VERIFY(std::align(1024, static_cast(-1), p1, s1) == nullptr);
+  VERIFY(p1 == p2);
+  VERIFY(s1 == s2);
+}
+
+void test02()
+{
+  void* p1 = reinterpret_cast(1);
+  void* p2 = p1;
+  std::size_t s1 = -1;
+  std::size_t s2 = s1;
+  VERIFY(std::align(2, static_cast(-1), p1, s1) == nullptr);
+  VERIFY(p1 == p2);
+  VERIFY(s1 == s2);
+}
+
+int main()
+{
+  test01();
+  test02();
+}

Re: [PATCH] Fix overflow handling in std::align

2020-09-14 Thread Ville Voutilainen via Gcc-patches 
On Mon, 14 Sep 2020 at 12:51, Ville Voutilainen
 wrote:
>
> On Mon, 14 Sep 2020 at 09:18, Glen Fernandes via Libstdc++
>  wrote:
> >
> > Edit; Correct patch this time.
> >
> > Fix overflow handling in align
>
> Should the test verify that space is unmodified when nullptr is returned?

..and same for ptr.

Re: [PATCH] Fix overflow handling in std::align

2020-09-14 Thread Ville Voutilainen via Gcc-patches 
On Mon, 14 Sep 2020 at 09:18, Glen Fernandes via Libstdc++
 wrote:
>
> Edit; Correct patch this time.
>
> Fix overflow handling in align

Should the test verify that space is unmodified when nullptr is returned?

[PATCH] Fix overflow handling in std::align

2020-09-14 Thread Glen Fernandes via Gcc-patches 
Edit; Correct patch this time.

Fix overflow handling in align

2020-09-12  Glen Joseph Fernandes  

* include/bits/align.h (align): Fix overflow handling.
* testsuite/20_util/align/3.cc: New tests.

Tested x86_64-pc-linux-gnu.

Glen
commit 1c560175f38c6b108f80ffcf94d4cd956ef66604
Author: Glen Joseph Fernandes 
Date:   Mon Sep 14 01:21:27 2020 -0400

Fix overflow handling in align

2020-09-12  Glen Joseph Fernandes  

* include/bits/align.h (align): Fix overflow handling.
* testsuite/20_util/align/3.cc: New tests.

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 0878f31562e..e25770ce5ca 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2020-09-12  Glen Joseph Fernandes  
+
+* include/bits/align.h (align): Fix overflow handling.
+* testsuite/20_util/align/3.cc: New tests.
+
 2020-09-11  Thomas Rodgers  
 
* include/std/memory: Move #include  inside C++11
diff --git a/libstdc++-v3/include/bits/align.h 
b/libstdc++-v3/include/bits/align.h
index c3267f22934..2bd7c04d25c 100644
--- a/libstdc++-v3/include/bits/align.h
+++ b/libstdc++-v3/include/bits/align.h
@@ -60,6 +60,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 inline void*
 align(size_t __align, size_t __size, void*& __ptr, size_t& __space) noexcept
 {
+  if (__space < __size)
+return nullptr;
 #ifdef _GLIBCXX_USE_C99_STDINT_TR1
   const auto __intptr = reinterpret_cast(__ptr);
 #else
@@ -70,7 +72,7 @@ align(size_t __align, size_t __size, void*& __ptr, size_t& 
__space) noexcept
 #endif
   const auto __aligned = (__intptr - 1u + __align) & -__align;
   const auto __diff = __aligned - __intptr;
-  if ((__size + __diff) > __space)
+  if (!(__diff <= (__space - __size)))
 return nullptr;
   else
 {
diff --git a/libstdc++-v3/testsuite/20_util/align/3.cc 
b/libstdc++-v3/testsuite/20_util/align/3.cc
new file mode 100644
index 000..0aa9218bc51
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/align/3.cc
@@ -0,0 +1,45 @@
+// { dg-do run { target c++11 } }
+
+// 2020-09-12 Glen Joseph Fernandes 
+
+// Copyright (C) 2020 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software
+// Foundation; either version 3, or (at your option) any later
+// version.
+
+// This library is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this library; see the file COPYING3.  If not see
+// .
+
+// C++11 [ptr.align] (20.6.5): std::align
+
+#include 
+#include 
+
+void test01()
+{
+  void* p = reinterpret_cast(5);
+  std::size_t s = 3072;
+  VERIFY(std::align(1024, static_cast(-1), p, s) == nullptr);
+}
+
+void test02()
+{
+  void* p = reinterpret_cast(1);
+  std::size_t s = -1;
+  VERIFY(std::align(2, static_cast(-1), p, s) == nullptr);
+}
+
+int main()
+{
+  test01();
+  test02();
+}

[PATCH] Fix overflow handling in std::align

2020-09-13 Thread Glen Fernandes via Gcc-patches 
Fix overflow handling in align

2020-09-12  Glen Joseph Fernandes  

* include/bits/align.h (align): Fix overflow handling.
* testsuite/20_util/align/3.cc: New tests.

Tested x86_64-pc-linux-gnu.
commit 1c560175f38c6b108f80ffcf94d4cd956ef66604
Author: Glen Joseph Fernandes 
Date:   Mon Sep 14 01:21:27 2020 -0400

Fix overflow handling in align

2020-09-12  Glen Joseph Fernandes  

* include/bits/align.h (align): Fix overflow handling.
* testsuite/20_util/align/3.cc: New tests.

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 0878f31562e..e25770ce5ca 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2020-09-12  Glen Joseph Fernandes  
+
+* include/bits/align.h (align): Fix overflow handling.
+* testsuite/20_util/align/3.cc: New tests.
+
 2020-09-11  Thomas Rodgers  
 
* include/std/memory: Move #include  inside C++11
diff --git a/libstdc++-v3/include/bits/align.h 
b/libstdc++-v3/include/bits/align.h
index c3267f22934..2bd7c04d25c 100644
--- a/libstdc++-v3/include/bits/align.h
+++ b/libstdc++-v3/include/bits/align.h
@@ -60,6 +60,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 inline void*
 align(size_t __align, size_t __size, void*& __ptr, size_t& __space) noexcept
 {
+  if (__space < __size)
+return nullptr;
 #ifdef _GLIBCXX_USE_C99_STDINT_TR1
   const auto __intptr = reinterpret_cast(__ptr);
 #else
@@ -70,7 +72,7 @@ align(size_t __align, size_t __size, void*& __ptr, size_t& 
__space) noexcept
 #endif
   const auto __aligned = (__intptr - 1u + __align) & -__align;
   const auto __diff = __aligned - __intptr;
-  if ((__size + __diff) > __space)
+  if (__diff <= (__space - __size))
 return nullptr;
   else
 {
diff --git a/libstdc++-v3/testsuite/20_util/align/3.cc 
b/libstdc++-v3/testsuite/20_util/align/3.cc
new file mode 100644
index 000..0aa9218bc51
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/align/3.cc
@@ -0,0 +1,45 @@
+// { dg-do run { target c++11 } }
+
+// 2020-09-12 Glen Joseph Fernandes 
+
+// Copyright (C) 2020 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software
+// Foundation; either version 3, or (at your option) any later
+// version.
+
+// This library is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this library; see the file COPYING3.  If not see
+// .
+
+// C++11 [ptr.align] (20.6.5): std::align
+
+#include 
+#include 
+
+void test01()
+{
+  void* p = reinterpret_cast(5);
+  std::size_t s = 3072;
+  VERIFY(std::align(1024, static_cast(-1), p, s) == nullptr);
+}
+
+void test02()
+{
+  void* p = reinterpret_cast(1);
+  std::size_t s = -1;
+  VERIFY(std::align(2, static_cast(-1), p, s) == nullptr);
+}
+
+int main()
+{
+  test01();
+  test02();
+}