openpower/package/hostboot-p8/0008-Fix-compiler-can-assume-address-will-never-be-NULL-e.patch

From b315c53f2803b84e35fe646aa82702b82e8ecd98 Mon Sep 17 00:00:00 2001
From: Stewart Smith <stewart@linux.vnet.ibm.com>
Date: Thu, 25 Aug 2016 20:07:58 +1000
Subject: [PATCH 08/10] Fix compiler can assume address will never be NULL
 error with GCC6
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So, it turns out that relying on the address of something passed by
reference being able to be NULL isn't exactly a good idea, or remotely
obvious code. So, instead, do the sane thing and pass a pointer and
check it.

../../../../src/usr/diag/prdf/common/framework/register/prdfOperatorRegister.H:
In constructor ‘PRDF::AttnTypeRegister::AttnTypeRegister(PRDF::SCAN_COMM_REGISTE
R_CLASS&, PRDF::SCAN_COMM_REGISTER_CLASS&, PRDF::SCAN_COMM_REGISTER_CLASS&, PRDF
::SCAN_COMM_REGISTER_CLASS&)’:
../../../../src/usr/diag/prdf/common/framework/register/prdfOperatorRegister.H:4
42:21: error: the compiler can assume that the address of ‘i_check’ will never b
e NULL [-Werror=address]
         iv_check(  NULL == &i_check   ? &cv_null : &i_check),
                   ~~^~~~~~~~~~~
../../../../src/usr/diag/prdf/common/framework/register/prdfOperatorRegister.H:4
43:21: error: the compiler can assume that the address of ‘i_recov’ will never b
e NULL [-Werror=address]
         iv_recov(  NULL == &i_recov   ? &cv_null : &i_recov),
                   ~~^~~~~~~~~~~
../../../../src/usr/diag/prdf/common/framework/register/prdfOperatorRegister.H:4
44:22: error: the compiler can assume that the address of ‘i_special’ will never
 be NULL [-Werror=address]
         iv_special(NULL == &i_special ? &cv_null : &i_special),
                    ~~^~~~~~~~~~~~~
../../../../src/usr/diag/prdf/common/framework/register/prdfOperatorRegister.H:4
45:22: error: the compiler can assume that the address of ‘i_proccs’ will never
be NULL [-Werror=address]
         iv_proccs( NULL == &i_proccs  ? &cv_null : &i_proccs),
                    ~~^~~~~~~~~~~~

Change-Id: Iecd8636da67aac24f64f73fd82b1f7ccbfced900
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
---
 .../common/framework/register/prdfOperatorRegister.H     | 16 ++++++++--------
 .../prdf/common/framework/register/prdfScanFacility.C    |  2 +-
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/src/usr/diag/prdf/common/framework/register/prdfOperatorRegister.H b/src/usr/diag/prdf/common/framework/register/prdfOperatorRegister.H
index b0513e4..a26a76e 100755
--- a/src/usr/diag/prdf/common/framework/register/prdfOperatorRegister.H
+++ b/src/usr/diag/prdf/common/framework/register/prdfOperatorRegister.H
@@ -434,15 +434,15 @@ class AttnTypeRegister : public SCAN_COMM_REGISTER_CLASS
         iv_bs = &iv_iBS;
     }
 
-    AttnTypeRegister( SCAN_COMM_REGISTER_CLASS & i_check,
-                      SCAN_COMM_REGISTER_CLASS & i_recov,
-                      SCAN_COMM_REGISTER_CLASS & i_special,
-                      SCAN_COMM_REGISTER_CLASS & i_proccs ) :
+    AttnTypeRegister( SCAN_COMM_REGISTER_CLASS *i_check,
+                      SCAN_COMM_REGISTER_CLASS *i_recov,
+                      SCAN_COMM_REGISTER_CLASS *i_special,
+                      SCAN_COMM_REGISTER_CLASS *i_proccs ) :
         SCAN_COMM_REGISTER_CLASS( ),
-        iv_check(  NULL == &i_check   ? &cv_null : &i_check),
-        iv_recov(  NULL == &i_recov   ? &cv_null : &i_recov),
-        iv_special(NULL == &i_special ? &cv_null : &i_special),
-        iv_proccs( NULL == &i_proccs  ? &cv_null : &i_proccs),
+        iv_check(  NULL == i_check   ? &cv_null : i_check),
+        iv_recov(  NULL == i_recov   ? &cv_null : i_recov),
+        iv_special(NULL == i_special ? &cv_null : i_special),
+        iv_proccs( NULL == i_proccs  ? &cv_null : i_proccs),
         iv_iBS(0)         // will fully initialize this inside ctor.
     {
         uint32_t l_length = 1024;
diff --git a/src/usr/diag/prdf/common/framework/register/prdfScanFacility.C b/src/usr/diag/prdf/common/framework/register/prdfScanFacility.C
index 0d379cf..cad5ce8 100755
--- a/src/usr/diag/prdf/common/framework/register/prdfScanFacility.C
+++ b/src/usr/diag/prdf/common/framework/register/prdfScanFacility.C
@@ -166,7 +166,7 @@ SCAN_COMM_REGISTER_CLASS &  ScanFacility::GetAttnTypeRegister(
                                            SCAN_COMM_REGISTER_CLASS * i_special,
                                            SCAN_COMM_REGISTER_CLASS * i_proccs )
 {
-  AttnTypeRegister r(*i_check, *i_recov, *i_special, *i_proccs);
+  AttnTypeRegister r(i_check, i_recov, i_special, i_proccs);
   return iv_attnRegFw.get(r);
 }
 
-- 
2.7.4