mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Rollup merge of #103315 - RalfJung:interpret-switchint-ice, r=bjorn3

Browse Source 
interpret: remove an incorrect assertion

This fixes an ICE in Miri, [reported](https://rust-lang.zulipchat.com/#narrow/stream/269128-miri/topic/SwitchInt.20with.20no.20targets.3F) by `@saethlin.` The faulty assertion was introduced by 432535da2b, when a previously correct assertion checking that the `otherwise` target exists got replaced by this assertion checking that at least one more target beyond `otherwise` exists.

Sadly we don't have a small reproducer so I don't think we can easily add a testcase.
This commit is contained in:
Matthias Krüger 2022-10-20 22:42:41 +02:00 committed by GitHub
commit 801e32647e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 0 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
compiler/rustc_const_eval/src/interpret/terminator.rs
View File

@ -35,7 +35,6 @@ pub(super) fn eval_terminator(
assert_eq!(discr.layout.ty, switch_ty);
// Branch to the `otherwise` case by default, if no match is found.
assert!(!targets.iter().is_empty());
let mut target_block = targets.otherwise();
for (const_int, target) in targets.iter() {