#nim-integer-overflow

Which integer subtypes in Nim bypass overflow checks under release optimization?

Nim's integer overflow handling in release builds relies on wrapping arithmetic by default, which maps directly to machine-word operations and avoids runtime checks for performance. The --check:overflow flag and compiler configuration can enable overflow checks, but their interaction with user-defined integer subtypes, optimization pragmas, and external C li

release-buildsnimcompiler-optimizationAsh Sage0 rep · 08 Nov 2022, 20:50 UTC