Make changes to support compiling on Bullseye with GCC 10 (sonic-net#2216)

Types of changes done:
* Add missing includes in header files and .cpp files
* Don't use parentheses when doing list initialization in constructors
* Make sure variables are initialized before first use

Signed-off-by: Saikrishna Arcot <[email protected]>

Author: saiarcot895

cfgmgr/buffermgrdyn.cpp

@@ -29,18 +29,18 @@ using namespace swss;
 BufferMgrDynamic::BufferMgrDynamic(DBConnector *cfgDb, DBConnector *stateDb, DBConnector *applDb, const vector<TableConnector> &tables, shared_ptr<vector<KeyOpFieldsValuesTuple>> gearboxInfo, shared_ptr<vector<KeyOpFieldsValuesTuple>> zeroProfilesInfo) :
         Orch(tables),
         m_platform(),
-        m_bufferDirections({BUFFER_INGRESS, BUFFER_EGRESS}),
-        m_bufferObjectNames({"priority group", "queue"}),
-        m_bufferDirectionNames({"ingress", "egress"}),
+        m_bufferDirections{BUFFER_INGRESS, BUFFER_EGRESS},
+        m_bufferObjectNames{"priority group", "queue"},
+        m_bufferDirectionNames{"ingress", "egress"},
         m_applDb(applDb),
         m_zeroProfilesLoaded(false),
         m_supportRemoving(true),
         m_cfgDefaultLosslessBufferParam(cfgDb, CFG_DEFAULT_LOSSLESS_BUFFER_PARAMETER),
         m_cfgDeviceMetaDataTable(cfgDb, CFG_DEVICE_METADATA_TABLE_NAME),
         m_applBufferPoolTable(applDb, APP_BUFFER_POOL_TABLE_NAME),
         m_applBufferProfileTable(applDb, APP_BUFFER_PROFILE_TABLE_NAME),
-        m_applBufferObjectTables({ProducerStateTable(applDb, APP_BUFFER_PG_TABLE_NAME), ProducerStateTable(applDb, APP_BUFFER_QUEUE_TABLE_NAME)}),
-        m_applBufferProfileListTables({ProducerStateTable(applDb, APP_BUFFER_PORT_INGRESS_PROFILE_LIST_NAME), ProducerStateTable(applDb, APP_BUFFER_PORT_EGRESS_PROFILE_LIST_NAME)}),
+        m_applBufferObjectTables{ProducerStateTable(applDb, APP_BUFFER_PG_TABLE_NAME), ProducerStateTable(applDb, APP_BUFFER_QUEUE_TABLE_NAME)},
+        m_applBufferProfileListTables{ProducerStateTable(applDb, APP_BUFFER_PORT_INGRESS_PROFILE_LIST_NAME), ProducerStateTable(applDb, APP_BUFFER_PORT_EGRESS_PROFILE_LIST_NAME)},
         m_statePortTable(stateDb, STATE_PORT_TABLE_NAME),
         m_stateBufferMaximumTable(stateDb, STATE_BUFFER_MAXIMUM_VALUE_TABLE),
         m_stateBufferPoolTable(stateDb, STATE_BUFFER_POOL_TABLE_NAME),

lib/subintf.cpp

@@ -2,6 +2,7 @@
 #include <cstring>
 #include <array>
 #include <net/if.h>
+#include <stdexcept>
 #include "subintf.h"
 
 using namespace swss;

lib/subintf.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <string>
+
 #define VLAN_SUB_INTERFACE_SEPARATOR   "."
 namespace swss {
 	class subIntf

orchagent/directory.h

@@ -6,6 +6,7 @@
 
 #include <typeinfo>
 #include <string>
+#include <stdexcept>
 #include <unordered_map>
 #include <algorithm>
 

orchagent/mplsrouteorch.cpp

@@ -465,7 +465,7 @@ bool RouteOrch::addLabelRoute(LabelRouteBulkContext& ctx, const NextHopGroupKey
     Label& label = ctx.label;
 
     /* next_hop_id indicates the next hop id or next hop group id of this route */
-    sai_object_id_t next_hop_id;
+    sai_object_id_t next_hop_id = SAI_NULL_OBJECT_ID;
     bool blackhole = false;
 
     if (m_syncdLabelRoutes.find(vrf_id) == m_syncdLabelRoutes.end())