diff --git a/src/DFA.h b/src/DFA.h
index a63beca9ac..8af4907da1 100644
--- a/src/DFA.h
+++ b/src/DFA.h
@@ -117,8 +117,6 @@ typedef PList(DFA_State) DFA_state_list;
 class DFA_Machine : public BroObj {
 public:
 	DFA_Machine(NFA_Machine* n, EquivClass* ec);
-	DFA_Machine(int** xtion_ptrs, int num_states, int num_ecs,
-			int* acc_array);
 	~DFA_Machine();
 
 	DFA_State* StartState() const	{ return start_state; }
diff --git a/src/Dict.h b/src/Dict.h
index 2def5ea28f..8a0b6b4f3d 100644
--- a/src/Dict.h
+++ b/src/Dict.h
@@ -109,8 +109,6 @@ public:
 	// which should be delete'd when no longer needed.
 	IterCookie* InitForIteration() const;
 	void* NextEntry(HashKey*& h, IterCookie*& cookie, int return_hash) const;
-	void* NextEntry(const void*& key, int& key_len, IterCookie*& cookie)
-		const;
 	void StopIteration(IterCookie* cookie) const;
 
 	void SetDeleteFunc(dict_delete_func f)		{ delete_func = f; }
diff --git a/src/ID.h b/src/ID.h
index 8eb890b732..177adcdfde 100644
--- a/src/ID.h
+++ b/src/ID.h
@@ -118,7 +118,6 @@ public:
 protected:
 	ID()	{ name = 0; type = 0; val = 0; attrs = 0; }
 
-	void CheckAttr(Attr* attr);
 	void EvalFunc(Expr* ef, Expr* ev);
 
 #ifdef DEBUG
diff --git a/src/OSFinger.h b/src/OSFinger.h
index 0968fb5fd3..2f0dde976b 100644
--- a/src/OSFinger.h
+++ b/src/OSFinger.h
@@ -90,13 +90,6 @@ public:
 		uint8 TTL, uint16 WSS, uint8 ocnt, uint8* op, uint16 MSS,
 		uint8 win_scale, uint32 tstamp, uint32 quirks, uint8 ECN) const;
 	bool CacheMatch(const IPAddr& addr, int id);
-
-	int Get_OS_From_SYN(struct os_type* retval,
-			uint16 tot, uint8 DF_flag, uint8 TTL, uint16 WSS,
-			uint8 ocnt, uint8* op, uint16 MSS, uint8 win_scale,
-			uint32 tstamp, /* uint8 TOS, */ uint32 quirks,
-			uint8 ecn) const;
-
 	void load_config(const char* file);
 
 protected:
diff --git a/src/OpaqueVal.h b/src/OpaqueVal.h
index df928dff60..7954653c6c 100644
--- a/src/OpaqueVal.h
+++ b/src/OpaqueVal.h
@@ -106,7 +106,6 @@ public:
 
 protected:
 	friend class Val;
-	EntropyVal(OpaqueType* t);
 
 	DECLARE_SERIAL(EntropyVal);
 
diff --git a/src/RE.h b/src/RE.h
index 7437dbb8b8..ad38aeb306 100644
--- a/src/RE.h
+++ b/src/RE.h
@@ -175,7 +175,6 @@ public:
 	RE_Matcher(const char* pat);
 	virtual ~RE_Matcher();
 
-	void AddDef(const char* defn_name, const char* defn_val);
 	void AddPat(const char* pat);
 
 	int Compile(int lazy = 0);
diff --git a/src/Timer.h b/src/Timer.h
index e095421c30..8fba53d3b7 100644
--- a/src/Timer.h
+++ b/src/Timer.h
@@ -150,7 +150,6 @@ public:
 	int Size() const	{ return q->Size(); }
 	int PeakSize() const	{ return q->PeakSize(); }
 	uint64 CumulativeNum() const	{ return q->CumulativeNum(); }
-	unsigned int MemoryUsage() const;
 
 protected:
 	int DoAdvance(double t, int max_expire);
diff --git a/src/analyzer/protocol/ayiya/AYIYA.h b/src/analyzer/protocol/ayiya/AYIYA.h
index 6e8baa11f8..bffc7aabf8 100644
--- a/src/analyzer/protocol/ayiya/AYIYA.h
+++ b/src/analyzer/protocol/ayiya/AYIYA.h
@@ -18,8 +18,6 @@ public:
 		{ return new AYIYA_Analyzer(conn); }
 
 protected:
-	void ExpireTimer(double t);
-
 	binpac::AYIYA::AYIYA_Conn* interp;
 };
 
diff --git a/src/analyzer/protocol/gtpv1/GTPv1.h b/src/analyzer/protocol/gtpv1/GTPv1.h
index d8a04bc0b0..45cacaa17a 100644
--- a/src/analyzer/protocol/gtpv1/GTPv1.h
+++ b/src/analyzer/protocol/gtpv1/GTPv1.h
@@ -18,8 +18,6 @@ public:
 		{ return new GTPv1_Analyzer(conn); }
 
 protected:
-	void ExpireTimer(double t);
-
 	binpac::GTPv1::GTPv1_Conn* interp;
 };
 
diff --git a/src/analyzer/protocol/http/HTTP.h b/src/analyzer/protocol/http/HTTP.h
index bfc079187f..31bc485f35 100644
--- a/src/analyzer/protocol/http/HTTP.h
+++ b/src/analyzer/protocol/http/HTTP.h
@@ -155,8 +155,6 @@ public:
 	HTTP_Analyzer(Connection* conn);
 	~HTTP_Analyzer();
 
-	void Undelivered(tcp::TCP_Endpoint* sender, uint64 seq, int len);
-
 	void HTTP_Header(int is_orig, mime::MIME_Header* h);
 	void HTTP_EntityData(int is_orig, BroString* entity_data);
 	void HTTP_MessageDone(int is_orig, HTTP_Message* message);
diff --git a/src/analyzer/protocol/icmp/ICMP.h b/src/analyzer/protocol/icmp/ICMP.h
index 1de6a4afea..391ab4d7a7 100644
--- a/src/analyzer/protocol/icmp/ICMP.h
+++ b/src/analyzer/protocol/icmp/ICMP.h
@@ -25,8 +25,6 @@ public:
 		{ return new ICMP_Analyzer(conn); }
 
 protected:
-	ICMP_Analyzer(analyzer::Tag tag, Connection* conn);
-
 	virtual void Done();
 	virtual void DeliverPacket(int len, const u_char* data, bool orig,
 					uint64 seq, const IP_Hdr* ip, int caplen);
@@ -38,8 +36,6 @@ protected:
 
 	void Echo(double t, const struct icmp* icmpp, int len,
 			 int caplen, const u_char*& data, const IP_Hdr* ip_hdr);
-	void Context(double t, const struct icmp* icmpp, int len,
-			 int caplen, const u_char*& data, const IP_Hdr* ip_hdr);
 	void Redirect(double t, const struct icmp* icmpp, int len,
 			 int caplen, const u_char*& data, const IP_Hdr* ip_hdr);
 	void RouterAdvert(double t, const struct icmp* icmpp, int len,
diff --git a/src/analyzer/protocol/rpc/NFS.h b/src/analyzer/protocol/rpc/NFS.h
index 3a6da1f765..dd336d7dee 100644
--- a/src/analyzer/protocol/rpc/NFS.h
+++ b/src/analyzer/protocol/rpc/NFS.h
@@ -74,7 +74,6 @@ protected:
 	//   * size is the amount of bytes read (or requested to be written),
 	StringVal* nfs3_file_data(const u_char*& buf, int& n, uint64_t offset, int size);
 
-	RecordVal* ExtractOptAttrs(const u_char*& buf, int& n);
 	Val* ExtractUint32(const u_char*& buf, int& n);
 	Val* ExtractUint64(const u_char*& buf, int& n);
 	Val* ExtractTime(const u_char*& buf, int& n);
diff --git a/src/analyzer/protocol/syslog/Syslog.h b/src/analyzer/protocol/syslog/Syslog.h
index f1568e0b6f..8f2580806c 100644
--- a/src/analyzer/protocol/syslog/Syslog.h
+++ b/src/analyzer/protocol/syslog/Syslog.h
@@ -22,8 +22,6 @@ public:
 		{ return new Syslog_Analyzer(conn); }
 
 protected:
-	void ExpireTimer(double t);
-
 	int did_session_done;
 
 	binpac::Syslog::Syslog_Conn* interp;
diff --git a/src/analyzer/protocol/teredo/Teredo.h b/src/analyzer/protocol/teredo/Teredo.h
index 4882dd97ca..af733b8814 100644
--- a/src/analyzer/protocol/teredo/Teredo.h
+++ b/src/analyzer/protocol/teredo/Teredo.h
@@ -49,8 +49,6 @@ public:
 		}
 
 protected:
-	void ExpireTimer(double t);
-
 	bool valid_orig;
 	bool valid_resp;
 };
diff --git a/src/iosource/Component.h b/src/iosource/Component.h
index 4a38a9cd22..57e1084d3a 100644
--- a/src/iosource/Component.h
+++ b/src/iosource/Component.h
@@ -29,11 +29,6 @@ public:
 	 */
 	Component(const std::string& name);
 
-	/**
-	 * Copy constructor.
-	 */
-	Component(const Component& other);
-
 	/**
 	 * Destructor.
 	 */
diff --git a/src/iosource/PktDumper.h b/src/iosource/PktDumper.h
index dcfda2030b..4e53cd7aff 100644
--- a/src/iosource/PktDumper.h
+++ b/src/iosource/PktDumper.h
@@ -54,13 +54,6 @@ public:
 	 */
 	int HdrSize() const;
 
-	/**
-	 * Writes a packet to the dumper.
-	 *
-	 * @param pkt The packet to record.
-	 */
-	bool Record(const Packet* pkt);
-
 	// PktDumper interface for derived classes to implement.
 
 	/**
diff --git a/src/iosource/PktSrc.h b/src/iosource/PktSrc.h
index 25a743dc53..f2f14aa9c2 100644
--- a/src/iosource/PktSrc.h
+++ b/src/iosource/PktSrc.h
@@ -92,11 +92,6 @@ public:
 	 */
 	const char* ErrorMsg() const;
 
-	/**
-	 * Returns the size of the link-layer header for this source.
-	 */
-	int HdrSize() const;
-
 	/**
 	 * In pseudo-realtime mode, returns the logical timestamp of the
 	 * current packet. Undefined if not running pseudo-realtime mode.
diff --git a/src/logging/Manager.h b/src/logging/Manager.h
index 56626f39d3..ad526ec915 100644
--- a/src/logging/Manager.h
+++ b/src/logging/Manager.h
@@ -275,7 +275,6 @@ private:
 	void RemoveDisabledWriters(Stream* stream);
 	void InstallRotationTimer(WriterInfo* winfo);
 	void Rotate(WriterInfo* info);
-	Filter* FindFilter(EnumVal* id, StringVal* filter);
 	WriterInfo* FindWriter(WriterFrontend* writer);
 	bool CompareFields(const Filter* filter, const WriterFrontend* writer);
 	bool CheckFilterWriterConflict(const WriterInfo* winfo, const Filter* filter);
diff --git a/src/logging/WriterFrontend.h b/src/logging/WriterFrontend.h
index ae37613261..9228aeac45 100644
--- a/src/logging/WriterFrontend.h
+++ b/src/logging/WriterFrontend.h
@@ -138,19 +138,6 @@ public:
 	 */
 	void Rotate(const char* rotated_path, double open, double close, bool terminating);
 
-	/**
-	 * Finalizes writing to this tream.
-	 *
-	 * This method generates a message to the backend writer and triggers
-	 * the corresponding message there. If the backend method fails, it
-	 * sends a message back that will asynchronously call Disable().
-	 *
-	 * This method must only be called from the main thread.
-	 *
-	 * @param network_time The network time when the finish was triggered.
-	 */
-	void Finish(double network_time);
-
 	/**
 	 * Explicitly triggers a transfer of all potentially buffered Write()
 	 * operations over to the backend.