On 9 June 2017 at 10:53, Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx> wrote: > Replace occurrences of `free(p); p = NULL` with `freez(p)`. This > introduces no functional changes, but cuts the number of lines spent > on this cleanup in half. It's even better than that. ;) > 48 files changed, 97 insertions(+), 197 deletions(-) The difference is in builtin/am.c where some empty lines are removed in am_next(), so no need to be alarmed. The macro would be dangerous with things like "freez(ptr++)" but I couldn't find any such side-effects. In hindsight, I guess your commit message says as much since using "ptr++" for "p" would already be a bug. I have no idea whether this conflicts with other topics, or any opinion on the best strategy for doing the conversion (all-at-once or "while we're here").