[PATCH] D123544: [randstruct] Automatically randomize a structure of function pointers
Bill Wendling via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Tue Apr 12 11:51:11 PDT 2022
void added a comment.
In D123544#3446285 <https://reviews.llvm.org/D123544#3446285>, @lebedev.ri wrote:
> Does this not lead to non-deterministic/non-reproducible builds?
It's deterministic based on the randomization seed.
> I do not understand why this feature must be inflicted onto everyone.
A developer must mark structures with the `randomize_layout` attribute and supply a randomization seed for the randstruct feature to be enabled. It's only when a randomization seed is supplied that it'll randomize structures consisting of only function pointers (which happens a lot in Linux). And you're able to opt-out of such a thing.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D123544/new/
https://reviews.llvm.org/D123544
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