[pull] master from ruby:master#662

Merged

pull[bot] merged 3 commits intoturkdevops:masterfrom

Jan 7, 2026

Commits on Jan 7, 2026

[ruby/mmtk] Set MMTK_DEBUG in C compiler for debug builds

peterzhu2118
authored and
matzbot
committed
[ruby/mmtk] Check that a and b are valid objects in write barrier

peterzhu2118
authored and
matzbot
committed
Support customizable rustc_flags for rustc builds.

jackorp
and
XrXr
committed