From b440c45c2810acbddc917db057f2e5194da1a199 Mon Sep 17 00:00:00 2001 From: Alexander Grund Date: Thu, 11 May 2023 05:16:45 +0200 Subject: [PATCH] Avoid `Wzero-as-null-pointer-constant` warning (#75) Newer compilers may warn when using `0`, e.g.: ``` ./boost/iterator/detail/facade_iterator_category.hpp:161:5: error: zero as null pointer constant [-Werror,-Wzero-as-null-pointer-constant] BOOST_MPL_ASSERT_NOT((is_iterator_category)); ^ ./boost/mpl/assert.hpp:324:58: note: expanded from macro 'BOOST_MPL_ASSERT_NOT' boost::mpl::assert_not_arg( (void (*) pred)0, 1 ) \ ``` --- include/boost/mpl/assert.hpp | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/boost/mpl/assert.hpp b/include/boost/mpl/assert.hpp index 67700ab..c7ecddf 100644 --- a/include/boost/mpl/assert.hpp +++ b/include/boost/mpl/assert.hpp @@ -297,7 +297,7 @@ BOOST_MPL_AUX_ASSERT_CONSTANT( \ std::size_t \ , BOOST_PP_CAT(mpl_assertion_in_line_,BOOST_MPL_AUX_PP_COUNTER()) = sizeof( \ boost::mpl::assertion_failed( \ - boost::mpl::assert_arg( (void (*) pred)0, 1 ) \ + boost::mpl::assert_arg( (void (*) pred)BOOST_NULLPTR, 1 ) \ ) \ ) \ ) \ @@ -310,7 +310,7 @@ BOOST_MPL_AUX_ASSERT_CONSTANT( \ enum { \ BOOST_PP_CAT(mpl_assertion_in_line_,BOOST_MPL_AUX_PP_COUNTER()) = sizeof( \ boost::mpl::assertion::failed( \ - boost::mpl::assert_not_arg( (void (*) pred)0, 1 ) \ + boost::mpl::assert_not_arg( (void (*) pred)BOOST_NULLPTR, 1 ) \ ) \ ) \ }\ @@ -321,7 +321,7 @@ BOOST_MPL_AUX_ASSERT_CONSTANT( \ std::size_t \ , BOOST_PP_CAT(mpl_assertion_in_line_,BOOST_MPL_AUX_PP_COUNTER()) = sizeof( \ boost::mpl::assertion_failed( \ - boost::mpl::assert_not_arg( (void (*) pred)0, 1 ) \ + boost::mpl::assert_not_arg( (void (*) pred)BOOST_NULLPTR, 1 ) \ ) \ ) \ ) \