From 9a457d97b543c5e1c03cf40b78ca4c53bf902642 Mon Sep 17 00:00:00 2001
From: Gabe Black <gabeblack@google.com>
Date: Thu, 7 Jun 2018 14:39:31 -0700
Subject: [PATCH] systemc: Add a non-standard default writer policy on
 sc_buffer.

The standard says there's not supposed to be a default writer policy
for the sc_buffer template class, but in the Accellera implementation
there is, and the regression tests depend on it to compile.

Change-Id: I31d17617441224e86c56c54e45364be8f4f45b00
Reviewed-on: https://gem5-review.googlesource.com/10957
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
---
 src/systemc/ext/channel/sc_buffer.hh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/systemc/ext/channel/sc_buffer.hh b/src/systemc/ext/channel/sc_buffer.hh
index 153b60b10..22081605e 100644
--- a/src/systemc/ext/channel/sc_buffer.hh
+++ b/src/systemc/ext/channel/sc_buffer.hh
@@ -37,7 +37,9 @@
 namespace sc_core
 {
 
-template <class T, sc_writer_policy WRITER_POLICY>
+// Having a default value for the WRITER_POLICY parameter is non-standard, but
+// matches the Accellera implementation to enable the regression tests.
+template <class T, sc_writer_policy WRITER_POLICY=SC_ONE_WRITER>
 class sc_buffer : public sc_signal<T, WRITER_POLICY>
 {
   public:
-- 
2.30.2