Fix: GCC9's warnings about deprecated implicit assignment operators

src/3rdparty/squirrel/squirrel/sqfuncproto.h

@@ -20,12 +20,6 @@ struct SQOuterVar
 		_src=src;
 		_type=t;
 	}
-	SQOuterVar(const SQOuterVar &ov)
-	{
-		_type=ov._type;
-		_src=ov._src;
-		_name=ov._name;
-	}
 	SQOuterType _type;
 	SQObjectPtr _name;
 	SQObjectPtr _src;
@@ -34,13 +28,6 @@ struct SQOuterVar
 struct SQLocalVarInfo
 {
 	SQLocalVarInfo():_start_op(0),_end_op(0), _pos(0){}
-	SQLocalVarInfo(const SQLocalVarInfo &lvi)
-	{
-		_name=lvi._name;
-		_start_op=lvi._start_op;
-		_end_op=lvi._end_op;
-		_pos=lvi._pos;
-	}
 	SQObjectPtr _name;
 	SQUnsignedInteger _start_op;
 	SQUnsignedInteger _end_op;

src/3rdparty/squirrel/squirrel/sqvm.h

@@ -12,9 +12,8 @@
 void sq_base_register(HSQUIRRELVM v);
 
 struct SQExceptionTrap{
-	SQExceptionTrap() {}
-	SQExceptionTrap(SQInteger ss, SQInteger stackbase,SQInstruction *ip, SQInteger ex_target){ _stacksize = ss; _stackbase = stackbase; _ip = ip; _extarget = ex_target;}
-	SQExceptionTrap(const SQExceptionTrap &et) { (*this) = et;	}
+	SQExceptionTrap(SQInteger ss, SQInteger stackbase,SQInstruction *ip, SQInteger ex_target)
+		: _stackbase(stackbase), _stacksize(ss), _ip(ip), _extarget(ex_target) {}
 	SQInteger _stackbase;
 	SQInteger _stacksize;
 	SQInstruction *_ip;

src/error_gui.cpp

@@ -72,9 +72,11 @@ static WindowDesc _errmsg_face_desc(
  * Copy the given data into our instance.
  * @param data The data to copy.
  */
-ErrorMessageData::ErrorMessageData(const ErrorMessageData &data)
+ErrorMessageData::ErrorMessageData(const ErrorMessageData &data) :
+	duration(data.duration), textref_stack_grffile(data.textref_stack_grffile), textref_stack_size(data.textref_stack_size),
+	summary_msg(data.summary_msg), detailed_msg(data.detailed_msg), position(data.position), face(data.face)
 {
-	*this = data;
+	memcpy(this->textref_stack, data.textref_stack, sizeof(this->textref_stack));
 	for (size_t i = 0; i < lengthof(this->strings); i++) {
 		if (this->strings[i] != nullptr) {
 			this->strings[i] = stredup(this->strings[i]);

src/network/core/address.h

@@ -91,15 +91,6 @@ public:
 		this->SetPort(port);
 	}
 
-	/**
-	 * Make a clone of another address
-	 * @param address the address to clone
-	 */
-	NetworkAddress(const NetworkAddress &address)
-	{
-		memcpy(this, &address, sizeof(*this));
-	}
-
 	const char *GetHostname();
 	void GetAddressAsString(char *buffer, const char *last, bool with_family = true);
 	const char *GetAddressAsString(bool with_family = true);

src/newgrf_text.cpp

@@ -18,6 +18,10 @@
  */
 
 #include "stdafx.h"
+
+#include <algorithm>
+#include <array>
+
 #include "newgrf.h"
 #include "strings_func.h"
 #include "newgrf_storage.h"
@@ -812,22 +816,14 @@ void CleanUpStrings()
 }
 
 struct TextRefStack {
-	byte stack[0x30];
+	std::array<byte, 0x30> stack;
 	byte position;
 	const GRFFile *grffile;
 	bool used;
 
 	TextRefStack() : position(0), grffile(nullptr), used(false) {}
 
-	TextRefStack(const TextRefStack &stack) :
-		position(stack.position),
-		grffile(stack.grffile),
-		used(stack.used)
-	{
-		memcpy(this->stack, stack.stack, sizeof(this->stack));
-	}
-
-	uint8  PopUnsignedByte()  { assert(this->position < lengthof(this->stack)); return this->stack[this->position++]; }
+	uint8  PopUnsignedByte()  { assert(this->position < this->stack.size()); return this->stack[this->position++]; }
 	int8   PopSignedByte()    { return (int8)this->PopUnsignedByte(); }
 
 	uint16 PopUnsignedWord()
@@ -865,9 +861,8 @@ struct TextRefStack {
 		if (this->position >= 2) {
 			this->position -= 2;
 		} else {
-			for (int i = lengthof(stack) - 1; i >= this->position + 2; i--) {
-				this->stack[i] = this->stack[i - 2];
-			}
+			// Rotate right 2 positions
+			std::rotate(this->stack.rbegin(), this->stack.rbegin() + 2, this->stack.rend());
 		}
 		this->stack[this->position]     = GB(word, 0, 8);
 		this->stack[this->position + 1] = GB(word, 8, 8);
@@ -939,12 +934,12 @@ void StartTextRefStackUsage(const GRFFile *grffile, byte numEntries, const uint3
 
 	_newgrf_textrefstack.ResetStack(grffile);
 
-	byte *p = _newgrf_textrefstack.stack;
+	auto stack_it = _newgrf_textrefstack.stack.begin();
 	for (uint i = 0; i < numEntries; i++) {
 		uint32 value = values != nullptr ? values[i] : _temp_store.GetValue(0x100 + i);
 		for (uint j = 0; j < 32; j += 8) {
-			*p = GB(value, j, 8);
-			p++;
+			*stack_it = GB(value, j, 8);
+			stack_it++;
 		}
 	}
 }

src/pathfinder/yapf/yapf_costrail.hpp

@@ -47,14 +47,6 @@ protected:
 			this->tile_type = GetTileType(tile);
 			this->rail_type = GetTileRailType(tile);
 		}
-
-		TILE(const TILE &src)
-		{
-			tile = src.tile;
-			td = src.td;
-			tile_type = src.tile_type;
-			rail_type = src.rail_type;
-		}
 	};
 
 protected: