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-rw-r--r--src/comp/middle/ty.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/comp/middle/ty.rs b/src/comp/middle/ty.rs
index fa5c5e0bffd..9b031c8fb3a 100644
--- a/src/comp/middle/ty.rs
+++ b/src/comp/middle/ty.rs
@@ -1159,7 +1159,8 @@ fn type_is_signed(cx: ctxt, ty: t) -> bool {
     }
 }
 
-// Whether a type is Plain Old Data (i.e. can be safely memmoved).
+// Whether a type is Plain Old Data -- meaning it does not contain pointers
+// that the cycle collector might care about.
 fn type_is_pod(cx: ctxt, ty: t) -> bool {
     let result = true;
     alt struct(cx, ty) {