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path: root/compiler/rustc_mir_transform/src/coverage/tests.rs
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Diffstat (limited to 'compiler/rustc_mir_transform/src/coverage/tests.rs')
-rw-r--r--compiler/rustc_mir_transform/src/coverage/tests.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_mir_transform/src/coverage/tests.rs b/compiler/rustc_mir_transform/src/coverage/tests.rs
index aded8039dc3..59b506e7345 100644
--- a/compiler/rustc_mir_transform/src/coverage/tests.rs
+++ b/compiler/rustc_mir_transform/src/coverage/tests.rs
@@ -65,7 +65,7 @@ impl<'tcx> MockBlocks<'tcx> {
     }
 
     fn push(&mut self, kind: TerminatorKind<'tcx>) -> BasicBlock {
-        let next_lo = if let Some(last) = self.blocks.last() {
+        let next_lo = if let Some(last) = self.blocks.last_index() {
             self.blocks[last].terminator().source_info.span.hi()
         } else {
             BytePos(1)