From 05ae2c11fa0464b258d40ff330839a303fbdfd67 Mon Sep 17 00:00:00 2001
From: Benoit Daloze <eregontp@gmail.com>
Date: Thu, 6 Jun 2019 15:54:17 +0200
Subject: [PATCH] [rubygems/rubygems] Do not replace the cache entry if there
 is already one

* That way, multiple lookups for the same file always return the same object.

https://github.com/rubygems/rubygems/commit/50a431b6db
---
 lib/rubygems/specification.rb | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/rubygems/specification.rb b/lib/rubygems/specification.rb
index abb6e0ecfd..3c8248793c 100644
--- a/lib/rubygems/specification.rb
+++ b/lib/rubygems/specification.rb
@@ -1124,7 +1124,12 @@ class Gem::Specification < Gem::BasicSpecification
       if Gem::Specification === _spec
         _spec.loaded_from = File.expand_path file.to_s
         LOAD_CACHE_MUTEX.synchronize do
-          LOAD_CACHE[file] = _spec
+          prev = LOAD_CACHE[file]
+          if prev
+            _spec = prev
+          else
+            LOAD_CACHE[file] = _spec
+          end
         end
         return _spec
       end