rustc: don't unpack newtypes of scalar-pairs with mismatched alignment. #46428
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
eddyb
added
the
beta-nominated
|
(rust_highfive has picked a reviewer for you, use r? to override) |
kennytm
added
the
S-waiting-on-review
eddyb
force-pushed
the
scalar-pair-unpacking
branch
from
632afcd to
081d733
Compare
|
r? @nikomatsakis or @arielb1 |
eddyb
force-pushed
the
scalar-pair-unpacking
branch
from
081d733 to
d455955
Compare
|
@bors r+ |
|
📌 Commit d455955 has been approved by |
bors
added a commit
that referenced
this pull request
Dec 3, 2017
rustc: don't unpack newtypes of scalar-pairs with mismatched alignment. This PR fixes a potential problem where a packed newtype of a pair was also considered a pair, even though it didn't have the required alignment of the pair. cc @oli-obk It's possible miri hit something like this, with an unstable feature, but it's more general.
|
☀️ Test successful - status-appveyor, status-travis |
michaelwoerister
added
beta-accepted
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR fixes a potential problem where a packed newtype of a pair was also considered a pair, even though it didn't have the required alignment of the pair.
cc @oli-obk It's possible miri hit something like this, with an unstable feature, but it's more general.