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-rw-r--r--tests/codegen/vecdeque-drain.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/codegen/vecdeque-drain.rs b/tests/codegen/vecdeque-drain.rs
index 8a34ba0674b..a5e5da65013 100644
--- a/tests/codegen/vecdeque-drain.rs
+++ b/tests/codegen/vecdeque-drain.rs
@@ -1,6 +1,6 @@
 // Check that draining at the front or back doesn't copy memory.
 
-//@ compile-flags: -O
+//@ compile-flags: -Copt-level=3
 //@ needs-deterministic-layouts
 //@ ignore-std-debug-assertions (FIXME: checks for call detect scoped noalias metadata)