From fb540e3de45571ac85c610475031449993c19277 Mon Sep 17 00:00:00 2001
From: Aaron Hill <aa1ronham@gmail.com>
Date: Mon, 11 Sep 2017 10:51:28 -0400
Subject: [PATCH] Update comment to properly describe static promotion
 restrictions

---
 src/librustc_passes/consts.rs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/librustc_passes/consts.rs b/src/librustc_passes/consts.rs
index eb955ccf6bf70..547d63fc3d4aa 100644
--- a/src/librustc_passes/consts.rs
+++ b/src/librustc_passes/consts.rs
@@ -336,9 +336,10 @@ fn check_expr<'a, 'tcx>(v: &mut CheckCrateVisitor<'a, 'tcx>, e: &hir::Expr, node
                 Def::VariantCtor(..) | Def::StructCtor(..) |
                 Def::Fn(..) | Def::Method(..) =>  {}
 
-                // References to a static are inherently promotable,
-                // with the exception of "#[thread_loca]" statics.
-                // The latter may not outlive the current function
+                // References to a static that are themselves within a static
+                // are inherently promotable with the exception
+                //  of "#[thread_loca]" statics, which may not
+                // outlive the current function
                 Def::Static(did, _) => {
 
                     if v.in_static {