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This is another quick bug-fix release on top of 2.19.1. It updates the vendored aw-backtrace.

Updated aw-backtrace expands x86-64 DRAP support. With -march=x86-64-v3 (e.g. Ubuntu 26.04's amd64v3 variant) gcc realigns the stack for AVX much more often, and a realigned function that also passes arguments on the stack uses a DRAP frame. The layout of those frames turned out to be more general than we previously assumed, so backtraces through them were truncated (this affected CPU and heap profiles as well as debugallocation's stack traces). This fixes the test failures seen on github's Ubuntu 26.04 builders.

Source: README.md, updated 2026-10-29