Auto merge of #109941 - compiler-errors:rollup-5lsst2u, r=compiler-errors

Rollup of 9 pull requests

Successful merges:

 - #109723 (Pull some tuple variant fields out into their own struct)
 - #109838 (Fix `non_exhaustive_omitted_patterns` lint span)
 - #109901 (Enforce VarDebugInfo::Place in MIR validation.)
 - #109913 (Doc-comment  `IndexVec::from_elem` and use it in a few more places)
 - #109914 (Emit feature error for parenthesized generics in associated type bounds)
 - #109919 (rustdoc: escape GAT args in more cases)
 - #109937 (Don't collect return-position impl traits for documentation)
 - #109938 (Move a const-prop-lint specific hack from mir interpret to const-prop-lint and make it fallible)
 - #109940 (Add regression test for #93911)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 2 insertions, 3 deletions

diff --git a/compiler/rustc_mir_transform/src/coverage/graph.rs b/compiler/rustc_mir_transform/src/coverage/graph.rs
index 689d6c71361..6a73f2a6578 100644
--- a/compiler/rustc_mir_transform/src/coverage/graph.rs
+++ b/compiler/rustc_mir_transform/src/coverage/graph.rs
@@ -37,8 +37,7 @@ impl CoverageGraph {
         // `SwitchInt` to have multiple targets to the same destination `BasicBlock`, so
         // de-duplication is required. This is done without reordering the successors.
 
-        let bcbs_len = bcbs.len();
-        let mut seen = IndexVec::from_elem_n(false, bcbs_len);
+        let mut seen = IndexVec::from_elem(false, &bcbs);
         let successors = IndexVec::from_fn_n(
             |bcb| {
                 for b in seen.iter_mut() {
@@ -60,7 +59,7 @@ impl CoverageGraph {
             bcbs.len(),
         );
 
-        let mut predecessors = IndexVec::from_elem_n(Vec::new(), bcbs.len());
+        let mut predecessors = IndexVec::from_elem(Vec::new(), &bcbs);
         for (bcb, bcb_successors) in successors.iter_enumerated() {
             for &successor in bcb_successors {
                 predecessors[successor].push(bcb);