fix deallocate arguments in monotonic_resource and string_impl

[Ramya-9353]

Repro: parse anything through a monotonic_resource whose upstream is test/checking_resource.hpp. Every block fails size == it->second.first, and a truncated object key fails alignment == it->second.second.

Cause: do_allocate asks the upstream for sizeof(block) + next_size_ but records only next_size_ in block::size, so release() returns each block 32 bytes short on LP64. string_impl::destroy separately frees a key string with the default alignment although both key_t constructors allocate it with alignof(char). The default resource ignores both arguments, so this only bites upstreams that bucket by size or alignment.

Fix: add the header size back before deallocating, and pass alignof(char) for the key string.

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2026-08-03 09:46:10 UTC

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Build time: 2026-08-03 10:00:01 UTC

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