diff --git a/cmake/CompileFlags.cmake b/cmake/CompileFlags.cmake
index a85a915c3b..8da4be8bab 100644
--- a/cmake/CompileFlags.cmake
+++ b/cmake/CompileFlags.cmake
@@ -74,12 +74,6 @@ macro(compile_flags)
 
             # We use 'ABCD' multichar for SaveLoad chunks identifiers
             -Wno-multichar
-
-            # Compilers complains about that we break strict-aliasing.
-            #  On most places we don't see how to fix it, and it doesn't
-            #  break anything. So disable strict-aliasing to make the
-            #  compiler all happy.
-            -fno-strict-aliasing
         )
 
         # Ninja processes the output so the output from the compiler
diff --git a/src/3rdparty/squirrel/squirrel/sqcompiler.cpp b/src/3rdparty/squirrel/squirrel/sqcompiler.cpp
index 6f67796839..560edfc66b 100644
--- a/src/3rdparty/squirrel/squirrel/sqcompiler.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqcompiler.cpp
@@ -650,8 +650,7 @@ public:
 							_fs->AddInstruction(_OP_LOADINT, _exst._deref,_integer(constval));
 						}
 						else if(ctype == OT_FLOAT && sizeof(SQFloat) == sizeof(SQInt32)) {
-							SQFloat f = _float(constval);
-							_fs->AddInstruction(_OP_LOADFLOAT, _exst._deref,*((SQInt32 *)&f));
+							_fs->AddInstruction(_OP_LOADFLOAT, _exst._deref, std::bit_cast<SQInt32>(_float(constval)));
 						}
 						else {
 							_fs->AddInstruction(_OP_LOAD, _exst._deref, _fs->GetConstant(constval));
@@ -697,7 +696,7 @@ public:
 			break;
 		case TK_FLOAT:
 			if(sizeof(SQFloat) == sizeof(SQInt32)) {
-				_fs->AddInstruction(_OP_LOADFLOAT, _fs->PushTarget(),*((SQInt32 *)&_lex._fvalue));
+				_fs->AddInstruction(_OP_LOADFLOAT, _fs->PushTarget(), std::bit_cast<SQInt32>(_lex._fvalue));
 			}
 			else {
 				_fs->AddInstruction(_OP_LOAD, _fs->PushTarget(), _fs->GetNumericConstant(_lex._fvalue));
diff --git a/src/3rdparty/squirrel/squirrel/sqfuncstate.cpp b/src/3rdparty/squirrel/squirrel/sqfuncstate.cpp
index e6e64ba81a..54744292a9 100644
--- a/src/3rdparty/squirrel/squirrel/sqfuncstate.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqfuncstate.cpp
@@ -199,7 +199,7 @@ void SQFuncState::Dump(SQFunctionProto *func)
 			}
 		}
 		else if(inst.op==_OP_LOADFLOAT) {
-			printf("[%03d] %15s %d %f %d %d\n",n,g_InstrDesc[inst.op].name,inst._arg0,*((SQFloat*)&inst._arg1),inst._arg2,inst._arg3);
+			printf("[%03d] %15s %d %f %d %d\n",n,g_InstrDesc[inst.op].name,inst._arg0,std::bit_cast<SQFloat>(inst._arg1),inst._arg2,inst._arg3);
 		}
 		else if(inst.op==_OP_ARITH){
 			printf("[%03d] %15s %d %d %d %c\n",n,g_InstrDesc[inst.op].name,inst._arg0,inst._arg1,inst._arg2,inst._arg3);
@@ -242,19 +242,20 @@ SQInteger SQFuncState::GetConstant(const SQObject &cons)
 
 void SQFuncState::SetIntructionParams(SQInteger pos,SQInteger arg0,SQInteger arg1,SQInteger arg2,SQInteger arg3)
 {
-	_instructions[pos]._arg0=(unsigned char)*((SQUnsignedInteger *)&arg0);
-	_instructions[pos]._arg1=(SQInt32)*((SQUnsignedInteger *)&arg1);
-	_instructions[pos]._arg2=(unsigned char)*((SQUnsignedInteger *)&arg2);
-	_instructions[pos]._arg3=(unsigned char)*((SQUnsignedInteger *)&arg3);
+	_instructions[pos]._arg0 = (unsigned char)std::bit_cast<SQUnsignedInteger>(arg0);
+	_instructions[pos]._arg1 = (SQInt32)std::bit_cast<SQUnsignedInteger>(arg1);
+	_instructions[pos]._arg2 = (unsigned char)std::bit_cast<SQUnsignedInteger>(arg2);
+	_instructions[pos]._arg3 = (unsigned char)std::bit_cast<SQUnsignedInteger>(arg3);
 }
 
 void SQFuncState::SetIntructionParam(SQInteger pos,SQInteger arg,SQInteger val)
 {
 	switch(arg){
-		case 0:_instructions[pos]._arg0=(unsigned char)*((SQUnsignedInteger *)&val);break;
-		case 1:case 4:_instructions[pos]._arg1=(SQInt32)*((SQUnsignedInteger *)&val);break;
-		case 2:_instructions[pos]._arg2=(unsigned char)*((SQUnsignedInteger *)&val);break;
-		case 3:_instructions[pos]._arg3=(unsigned char)*((SQUnsignedInteger *)&val);break;
+		case 0: _instructions[pos]._arg0 = (unsigned char)std::bit_cast<SQUnsignedInteger>(val); break;
+		case 1:
+		case 4: _instructions[pos]._arg1 = (SQInt32)std::bit_cast<SQUnsignedInteger>(val); break;
+		case 2: _instructions[pos]._arg2 = (unsigned char)std::bit_cast<SQUnsignedInteger>(val); break;
+		case 3: _instructions[pos]._arg3 = (unsigned char)std::bit_cast<SQUnsignedInteger>(val); break;
 	};
 }
 
diff --git a/src/3rdparty/squirrel/squirrel/sqvm.cpp b/src/3rdparty/squirrel/squirrel/sqvm.cpp
index 02dbc1625d..52a4dfe85c 100644
--- a/src/3rdparty/squirrel/squirrel/sqvm.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqvm.cpp
@@ -51,7 +51,7 @@ bool SQVM::BW_OP(SQUnsignedInteger op,SQObjectPtr &trg,const SQObjectPtr &o1,con
 			case BW_XOR:	res = i1 ^ i2; break;
 			case BW_SHIFTL:	res = i1 << i2; break;
 			case BW_SHIFTR:	res = i1 >> i2; break;
-			case BW_USHIFTR:res = (SQInteger)(*((SQUnsignedInteger*)&i1) >> i2); break;
+			case BW_USHIFTR:res = (SQInteger)(std::bit_cast<SQUnsignedInteger>(i1) >> i2); break;
 			default: { Raise_Error("internal vm error bitwise op failed"); return false; }
 		}
 	}
@@ -472,10 +472,10 @@ bool SQVM::DerefInc(SQInteger op,SQObjectPtr &target, SQObjectPtr &self, SQObjec
 
 #define arg0 (_i_._arg0)
 #define arg1 (_i_._arg1)
-#define sarg1 (*(const_cast<SQInt32 *>(&_i_._arg1)))
+#define sarg1 (std::bit_cast<SQInt32>(_i_._arg1))
 #define arg2 (_i_._arg2)
 #define arg3 (_i_._arg3)
-#define sarg3 ((SQInteger)*((const signed char *)&_i_._arg3))
+#define sarg3 ((SQInteger)std::bit_cast<char>(_i_._arg3))
 
 SQRESULT SQVM::Suspend()
 {
@@ -764,7 +764,7 @@ exception_restore:
 				continue;
 			case _OP_LOAD: TARGET = ci->_literals[arg1]; continue;
 			case _OP_LOADINT: TARGET = (SQInteger)arg1; continue;
-			case _OP_LOADFLOAT: TARGET = *((const SQFloat *)&arg1); continue;
+			case _OP_LOADFLOAT: TARGET = std::bit_cast<SQFloat>(arg1); continue;
 			case _OP_DLOAD: TARGET = ci->_literals[arg1]; STK(arg2) = ci->_literals[arg3];continue;
 			case _OP_TAILCALL:
 				temp_reg = STK(arg1);