From 7fa0342a7c7982967c948b346ba7077dce54efd2 Mon Sep 17 00:00:00 2001
From: ylldummy <yenlinlai@google.com>
Date: Thu, 30 May 2024 01:41:35 +0800
Subject: [PATCH] mem-cache: Fix maybe-uninitialized warning (#1179)

When compiler tries to inline a vector construction with a default value
as default constructed ReplaceableEntry. It can complain about the
uninitialized member.

Let's provide basic initialization to the members.

Example codepath:
 SignaturePathV2 constructor
 -> GlobalHistoryEntry() as init_value to AssociativeSet
 -> AssociativeSet initialize vector<Entry> with init_value
---
 src/mem/cache/replacement_policies/replaceable_entry.hh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mem/cache/replacement_policies/replaceable_entry.hh b/src/mem/cache/replacement_policies/replaceable_entry.hh
index bb88cefd1d..aa07f4ec23 100644
--- a/src/mem/cache/replacement_policies/replaceable_entry.hh
+++ b/src/mem/cache/replacement_policies/replaceable_entry.hh
@@ -73,7 +73,7 @@ class ReplaceableEntry
     uint32_t _way;
 
   public:
-    ReplaceableEntry() = default;
+    ReplaceableEntry() : _set(0), _way(0) {}
     virtual ~ReplaceableEntry() = default;
 
     /**