All issues

A scalar op-assign on a global or class variable (`$i += v`) is the raw C operator: no overflow check, `**=` does not compile, and the rhs runs before the slot is read

#4886

· elektronaut opened

on Sep 24, 2026

An ivar, cvar or global written both `nil` and a bool (or Symbol) reads its `nil` back as `false`: `@v.nil?` folds to false (silent wrong value)

#4884

· elektronaut opened

on Sep 24, 2026

`k.new(x, **)` on a Class value leaves out the `&block` slot of another class's `initialize`, so the C does not compile (follow-up to #4855)

#4882

· elektronaut opened

on Sep 24, 2026

bigdecimal: BigDecimal() is not available

#4881

· rubys opened

on Sep 24, 2026

Walking a narrowed object array: a segfault and a C build failure since 4ea42f77

#4879

· blacktm opened

on Sep 23, 2026

Compile time on large programs: measurements, and what we can take on

#4847

· rubys opened

on Sep 23, 2026