From 2c9f7ebca51eaf8fafd1f854ec0475cb18e9e20c Mon Sep 17 00:00:00 2001
From: "Daniel R. Carvalho" <odanrc@yahoo.com.br>
Date: Tue, 15 Jan 2019 11:51:46 +0100
Subject: base: Fix unitialized storage
The bitunion is not being initialized on constructor to avoid
performance overhead, and that generated a maybe-unitialized
error when a sub-class was being copied before assigned in
serialize's parseParam() in some compilers.
This patch adds zero-initialization to the problematic variable
to appease the compiler.
Change-Id: I90fa6aa356b3e14ec25e3294b17ed10f429a9a38
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/15635
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
---
src/sim/serialize.hh | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/sim/serialize.hh b/src/sim/serialize.hh
index 543477726..a45d1bbcd 100644
--- a/src/sim/serialize.hh
+++ b/src/sim/serialize.hh
@@ -289,7 +289,8 @@ template <class T>
bool
parseParam(const std::string &s, BitUnionType<T> &value)
{
- auto storage = static_cast<BitUnionBaseType<T>>(value);
+ // Zero initialize storage to avoid leaking an uninitialized value
+ BitUnionBaseType<T> storage = BitUnionBaseType<T>();
auto res = to_number(s, storage);
value = storage;
return res;
--
cgit v1.2.3