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use manual pointer arithmetic to avoid invalid pointer cast

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This commit is contained in:
Christian Mazakas
2024-12-09 10:17:58 -08:00
parent a40c96df3a
commit 4f4c729547
1 changed files with 2 additions and 2 deletions
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4
include/boost/regex/v5/perl_matcher_non_recursive.hpp
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@ -237,8 +237,8 @@ void perl_matcher<BidiIterator, Allocator, traits>::extend_stack()
saved_state* backup_state;
stack_base = static_cast<saved_state*>(get_mem_block());
backup_state = reinterpret_cast<saved_state*>(reinterpret_cast<char*>(stack_base)+BOOST_REGEX_BLOCKSIZE);
saved_extra_block* block = static_cast<saved_extra_block*>(backup_state);
--block;
saved_extra_block* block = reinterpret_cast<saved_extra_block*>(
reinterpret_cast<std::uintptr_t>(backup_state) - sizeof(saved_extra_block));
(void) new (block) saved_extra_block(m_stack_base, m_backup_state);
m_stack_base = stack_base;
m_backup_state = block;