From 50fbbac50e9ce0e7276091a373218748d8d0133e Mon Sep 17 00:00:00 2001
From: Tim Holy <tim.holy@gmail.com>
Date: Sat, 7 Nov 2020 10:02:25 -0600
Subject: [PATCH] Improve inference for LineInfoNodes

This and related PRs are intended to avoid warnings that would have
otherwise occurred when running Julia PR37193 as test-revise.
---
 src/CodeTracking.jl | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/CodeTracking.jl b/src/CodeTracking.jl
index b2c4b3b..70b9538 100644
--- a/src/CodeTracking.jl
+++ b/src/CodeTracking.jl
@@ -110,7 +110,11 @@ function whereis(lineinfo, method::Method)
 end
 function whereis(lineinfo::Core.LineInfoNode, method::Method)
     # With LineInfoNode we have certainty about whether we're in a macro expansion
-    if lineinfo.method == Symbol("macro expansion")
+    meth = lineinfo.method
+    if isa(meth, WeakRef)
+        meth = meth.value
+    end
+    if meth === Symbol("macro expansion")
         return maybe_fix_path(String(lineinfo.file)), lineinfo.line
     end
     file, line1 = whereis(method)