gsquire / dll

Go linter for finding defer statements inside for loops

dll

Defer Loop Linter

A simple linter to find defer statements inside of for loops in Go source.

Other Works

See Issue #12 for an existing tool (staticcheck).

Why?

It's often erroneous to use defer inside of a loop as it can lead to memory leaks or other unintended behavior. It can also be easy to miss this in a code review as using defer to close sockets or files is a common Go idiom. This tool aims to point these out by simply printing the line of a defer statement when it is found inside of a loop.

Install

go get github.com/gsquire/dll

Usage

dll source.go

dll *.go

Contributing

Found a bug? Found a case this didn't catch? Great! Feel free to open an issue or add a test case!

License

MIT