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-rw-r--r--compiler/rustc_data_structures/src/profiling.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_data_structures/src/profiling.rs b/compiler/rustc_data_structures/src/profiling.rs
index 572bd4ac21c..5e13e7c8aaf 100644
--- a/compiler/rustc_data_structures/src/profiling.rs
+++ b/compiler/rustc_data_structures/src/profiling.rs
@@ -101,7 +101,7 @@ use parking_lot::RwLock;
 use smallvec::SmallVec;
 
 bitflags::bitflags! {
-    struct EventFilter: u32 {
+    struct EventFilter: u16 {
         const GENERIC_ACTIVITIES  = 1 << 0;
         const QUERY_PROVIDERS     = 1 << 1;
         const QUERY_CACHE_HITS    = 1 << 2;