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Ignore GCC10+ memcpy overflow warning

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This commit is contained in:
Matt Borland
2023-02-03 10:56:49 -08:00
parent c9376c89bf
commit 7934db5eb1
1 changed files with 17 additions and 0 deletions
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17
include/boost/charconv/detail/memcpy.hpp
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@@ -9,6 +9,19 @@
#include <cstring>
#include <cstdint>
// GCC 10 added checks for length of memcpy which yields the following warning (converted to error with -Werror)
// /usr/include/x86_64-linux-gnu/bits/string_fortified.h:34:33: error:
// ‘void* __builtin___memcpy_chk(void*, const void*, long unsigned int, long unsigned int)’ specified size between
// 18446744071562067968 and 18446744073709551615 exceeds maximum object size 9223372036854775807 [-Werror=stringop-overflow=]
//
// memcpy is defined as taking a size_t for the count and the largest count this will recieve is the number of digits
// in a 128-bit int (39) so we can safely ignore
#if __GNUC__ >= 10
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wstringop-overflow"
# define BOOST_CHARCONV_STRINGOP_OVERFLOW_DISABLED
#endif
namespace boost { namespace charconv { namespace detail {
#if !defined(BOOST_CHARCONV_NO_CONSTEXPR_DETECTION) && defined(BOOST_CXX14_CONSTEXPR)
@@ -45,4 +58,8 @@ inline void* memcpy(void* dest, const void* src, std::size_t count)
}}} // Namespace boost::charconv::detail
#ifdef BOOST_CHARCONV_STRINGOP_OVERFLOW_DISABLED
# pragma GCC diagnostic pop
#endif
#endif // BOOST_CHARCONV_DETAIL_MEMCPY_HPP