On Wed, 6 May 2020 at 12:20, Xinchen Hui <larue...@php.net> wrote: > mixing declarations and codes sometimes brings unexpected > varaibles overriden and hard to debugging. > > thanks > > -- > Xinchen Hui > @Laruence > http://www.laruence.com/
In a perfect world we would be able to enable the -Wshadow GCC compiler warning which would shout when such bugs could pop out, however variable shadowing is pretty common in the engine, and unless someone knows a way to "baseline" the current warnings such that only new/refactored code warns it seems like a long shot to get to a state where we can do that. Another related concern may be that a variable is not yet initialized, which can be flagged using -W-jump-misses-init, however due to a couple of limitations enabling it is not feasible without some small compromises, see https://github.com/php/php-src/pull/5389 Best regards George P. Banyard
