Fix/improve dereference-before-null-checks.

src/ChunkedIO.cc

@@ -1074,9 +1074,8 @@ bool ChunkedIOSSL::Read(Chunk** chunk, bool mayblock)
 	read_state = LEN;
 
 #ifdef DEBUG
-	if ( *chunk )
-		DBG_LOG(DBG_CHUNKEDIO, "ssl read of size %d [%s]",
-			(*chunk)->len, fmt_bytes((*chunk)->data, 20));
+	DBG_LOG(DBG_CHUNKEDIO, "ssl read of size %d [%s]",
+		(*chunk)->len, fmt_bytes((*chunk)->data, 20));
 #endif
 
 	return true;

src/Desc.cc

@@ -23,11 +23,7 @@ ODesc::ODesc(desc_type t, BroFile* arg_f)
 		size = DEFAULT_SIZE;
 		base = safe_malloc(size);
 		((char*) base)[0] = '\0';
-
 		offset = 0;
-
-		if ( ! base )
-			OutOfMemory();
 		}
 	else
 		{
@@ -337,16 +333,9 @@ void ODesc::Grow(unsigned int n)
 		{
 		size *= 2;
 		base = safe_realloc(base, size);
-		if ( ! base )
-			OutOfMemory();
 		}
 	}
 
-void ODesc::OutOfMemory()
-	{
-	reporter->InternalError("out of memory");
-	}
-
 void ODesc::Clear()
 	{
 	offset = 0;

src/Desc.h

@@ -149,8 +149,6 @@ protected:
 	// Make buffer big enough for n bytes beyond bufp.
 	void Grow(unsigned int n);
 
-	void OutOfMemory();
-
 	/**
 	 * Returns the location of the first place in the bytes to be hex-escaped.
 	 *

src/RemoteSerializer.cc

@@ -2925,8 +2925,7 @@ void RemoteSerializer::GotID(ID* id, Val* val)
 		const char* desc = val->AsString()->CheckString();
 		current_peer->val->Assign(4, new StringVal(desc));
 
-		Log(LogInfo, fmt("peer_description is %s",
-					(desc && *desc) ? desc : "not set"),
+		Log(LogInfo, fmt("peer_description is %s", *desc ? desc : "not set"),
 			current_peer);
 
 		Unref(id);

src/Serializer.cc

@@ -378,7 +378,7 @@ bool Serializer::UnserializeCall(UnserialInfo* info)
 				ignore = true;
 				}
 
-			if ( info->print && types && ! ignore )
+			if ( info->print && ! ignore )
 				v->Describe(&d);
 			}
 

src/analyzer/protocol/pia/PIA.cc

@@ -147,10 +147,12 @@ void PIA_UDP::ActivateAnalyzer(analyzer::Tag tag, const Rule* rule)
 		return;
 
 	analyzer::Analyzer* a = Parent()->AddChildAnalyzer(tag);
-	a->SetSignature(rule);
 
-	if ( a )
-		ReplayPacketBuffer(a);
+	if ( ! a )
+		return;
+
+	a->SetSignature(rule);
+	ReplayPacketBuffer(a);
 	}
 
 void PIA_UDP::DeactivateAnalyzer(analyzer::Tag tag)

src/input/readers/Raw.cc

@@ -291,6 +291,12 @@ bool Raw::CloseInput()
 
 bool Raw::DoInit(const ReaderInfo& info, int num_fields, const Field* const* fields)
 	{
+	if ( ! info.source || strlen(info.source) == 0 )
+		{
+		Error("No source path provided");
+		return false;
+		}
+
 	fname = info.source;
 	mtime = 0;
 	execute = false;
@@ -298,7 +304,6 @@ bool Raw::DoInit(const ReaderInfo& info, int num_fields, const Field* const* fie
 	int want_fields = 1;
 	bool result;
 
-	// do Initialization
 	string source = string(info.source);
 	char last = info.source[source.length() - 1];
 	if ( last == '|' )
@@ -307,12 +312,6 @@ bool Raw::DoInit(const ReaderInfo& info, int num_fields, const Field* const* fie
 		fname = source.substr(0, fname.length() - 1);
 		}
 
-	if ( ! info.source || strlen(info.source) == 0 )
-		{
-		Error("No source path provided");
-		return false;
-		}
-
 	map<const char*, const char*>::const_iterator it = info.config.find("stdin"); // data that is sent to the child process
 	if ( it != info.config.end() )
 		{

src/input/readers/SQLite.cc

@@ -187,11 +187,14 @@ Value* SQLite::EntryToVal(sqlite3_stmt *st, const threading::Field *field, int p
 		if ( subpos != -1 )
 			{
 			const char *text = (const char*) sqlite3_column_text(st, subpos);
-			string s(text, sqlite3_column_bytes(st, subpos));
+
 			if ( text == 0 )
 				Error("Port protocol definition did not contain text");
 			else
+				{
+				string s(text, sqlite3_column_bytes(st, subpos));
 				val->val.port_val.proto = io->ParseProto(s);
+				}
 			}
 		break;
 		}