[pull] master from ruby:master#802
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pull[bot] merged 2 commits intoturkdevops:masterfrom Feb 23, 2026
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These tests failed with RHEL10 again.
In gc_sweep_plane, VALGRIND_MAKE_MEM_UNDEFINED was using BASE_SLOT_SIZE which only covers the smallest pool's slot size. For larger size pools this left the tail of the slot with stale state. Use the page's actual slot_size instead. In gc_prof_set_heap_info, heap_use_size and heap_total_size were computed as object_count * BASE_SLOT_SIZE, undercounting memory for objects in larger size pools. Sum across all heaps using each pool's actual slot size for correct byte totals.
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