unchanged-loop-condition

Detect counted loops whose condition variable never changes.

Updated Aug 2, 2026View as Markdown

Default severity: warning

A conventional three-part loop that initializes and tests one variable but never changes that variable cannot progress as intended. This often means the post statement increments the wrong counter or is unreachable.

Bad

for index := 0; index < limit; other++ { use(index) }

Good

for index := 0; index < limit; index++ { use(index) }