macOS ARM64 -Wfortify-source error with Clang-20 #1282
Description
../../../boost/math/special_functions/detail/fp_traits.hpp:474:9: error: 'memcpy' will always overflow; destination buffer has size 0, but size argument is 4 [-Werror,-Wfortify-source]
474 | std::memcpy(reinterpret_cast<unsigned char*>(&x) + offset_, &a, 4);
| ^
1 error generated.
The comment on this structure is:
// IEEE extended double precision format with 15 exponent bits (128 bits)
Mac ARM64 has sizeof(long double) == sizeof(double) where as other ARM64 like the Graviton runners in the Drone CI have 128-bit long doubles