# CMP0055

Strict checking for the `break()` command.

CMake 3.1 and lower allowed calls to the `break()` command outside of a loop context and also ignored any given arguments. This was undefined behavior.

The OLD behavior for this policy is to allow `break()` to be placed outside of loop contexts and ignores any arguments. The NEW behavior for this policy is to issue an error if a misplaced break or any arguments are found.

This policy was introduced in CMake version 3.2. CMake version 3.10.0-rc2 warns when the policy is not set and uses OLD behavior. Use the cmake_policy command to set it to OLD or NEW explicitly.

Note

The `OLD` behavior of a policy is `deprecated by definition` and may be removed in a future version of CMake.