[PATCH v5 12/35] prepare_index(): declare return value to be (const char *)

Declare the return value to be const to make it clear that we aren't giving callers permission to write over the string that it points at. (The return value is the filename field of a struct lock_file, which can be used by a signal handler at any time and therefore shouldn't be tampered with.)

Re: [PATCH v5 12/35] prepare_index(): declare return value to be (const char *)

Michael Haggerty wrote: Declare the return value to be const to make it clear that we aren't giving callers permission to write over the string that it points at. (The return value is the filename field of a struct lock_file, which can be used by a signal handler at any time and therefore