https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107801
--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:75e562d2c4303d3918be9d1563284b0c580c5e45 commit r13-4371-g75e562d2c4303d3918be9d1563284b0c580c5e45 Author: Jonathan Wakely <jwak...@redhat.com> Date: Mon Nov 28 13:28:53 2022 +0000 libstdc++: Fix src/c++17/memory_resource for H8 targets [PR107801] This fixes compilation failures for H8 multilibs. For the normal multilib (ILP16L32?), the chunk struct does not have the expected size, because uint32_t is type long and has alignment 4 (by default). This forces sizeof(chunk) to be 12 instead of the expected 10. We can fix that by using bitset::size_type instead of uint32_t, so that we only use a 16-bit size when size_t and pointers are 16-bit types. For the I32LP16 multilibs that use -mint32 int is wider than size_t and so arithmetic expressions involving size_t promote to int. This means we need some explicit casts back to size_t. libstdc++-v3/ChangeLog: PR libstdc++/107801 * src/c++17/memory_resource.cc (chunk::_M_bytes): Change type from uint32_t to bitset::size_type. Adjust static assertion. (__pool_resource::_Pool::replenish): Cast to size_t after multiplication instead of before. (__pool_resource::_M_alloc_pools): Ensure both arguments to std::max have type size_t.
