[PATCH] D68115: Zero initialize padding in unions

Hubert Tong via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Tue Jan 14 13:38:10 PST 2020


hubert.reinterpretcast added a comment.

In D68115#1820462 <https://reviews.llvm.org/D68115#1820462>, @vitalybuka wrote:

> So if I understand this the proposal is to have something like -fzero-union-padding which is off by default.
>  When it's OFF compiler will continue to do whatever it does now.
>  When it's ON it will set zeroes into padding with or without -ftrivial-auto-var-init.
>  Is this correct?


That's my understanding and I would find such an option useful.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D68115/new/

https://reviews.llvm.org/D68115





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