diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index 7e9dadb1f8..6ae3ce61e1 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,3 +1,11 @@
+May 20, 2006 (Changes by Graf Zahl)
+- Fixed: The automap code had the check for rotation reversed.
+- Changed type PClass::FreeIndices to TArray<unsigned int> because that's
+  the type of the indices.
+- Fixed: makewad.c needs __cdecl for non-Windows builds.
+- Fixed: FinishThingdef didn't check whether the WeaponClass pointer in
+  AWeaponPiece was a valid name.
+
 May 19, 2006
 - Fixed: FloorAndCeiling_Raise/Lower did not work with slopes because they
   used ZatPointDist instead of PointToDist to calculate the destination
diff --git a/src/am_map.cpp b/src/am_map.cpp
index 058aee3538..3aae69d637 100644
--- a/src/am_map.cpp
+++ b/src/am_map.cpp
@@ -496,7 +496,7 @@ static void AM_ClipRotatedExtents ()
 {
 	fixed_t rmin_x, rmin_y, rmax_x, rmax_y;
 
-	if (am_rotate == 1 || (am_rotate == 2 && viewactive))
+	if (am_rotate == 0 || (am_rotate == 2 && !viewactive))
 	{
 		rmin_x = min_x;
 		rmin_y = min_y;
diff --git a/src/dobject.cpp b/src/dobject.cpp
index e460045d73..04a37b3617 100644
--- a/src/dobject.cpp
+++ b/src/dobject.cpp
@@ -343,7 +343,7 @@ CCMD (dumpclasses)
 }
 
 TArray<DObject *> DObject::Objects (TArray<DObject *>::NoInit);
-TArray<size_t> DObject::FreeIndices (TArray<size_t>::NoInit);
+TArray<unsigned int> DObject::FreeIndices (TArray<unsigned int>::NoInit);
 TArray<DObject *> DObject::ToDestroy (TArray<DObject *>::NoInit);
 bool DObject::Inactive;
 
diff --git a/src/thingdef.cpp b/src/thingdef.cpp
index 6892426255..05ce24d9c4 100644
--- a/src/thingdef.cpp
+++ b/src/thingdef.cpp
@@ -3632,7 +3632,7 @@ void FinishThingdef()
 			v = defaults->AmmoType1;
 			if (v != NAME_None && v.IsValidName())
 			{
-				defaults->AmmoType1 = PClass::FindClass(v.GetChars());
+				defaults->AmmoType1 = PClass::FindClass(v);
 				if (!defaults->AmmoType1)
 				{
 					SC_ScriptError("Unknown ammo type '%s' in '%s'\n", v.GetChars(), ti->TypeName.GetChars());
@@ -3646,7 +3646,7 @@ void FinishThingdef()
 			v = defaults->AmmoType2;
 			if (v != NAME_None && v.IsValidName())
 			{
-				defaults->AmmoType2 = PClass::FindClass(v.GetChars());
+				defaults->AmmoType2 = PClass::FindClass(v);
 				if (!defaults->AmmoType2)
 				{
 					SC_ScriptError("Unknown ammo type '%s' in '%s'\n", v.GetChars(), ti->TypeName.GetChars());
@@ -3660,7 +3660,7 @@ void FinishThingdef()
 			v = defaults->SisterWeaponType;
 			if (v != NAME_None && v.IsValidName())
 			{
-				defaults->SisterWeaponType = PClass::FindClass(v.GetChars());
+				defaults->SisterWeaponType = PClass::FindClass(v);
 				if (!defaults->SisterWeaponType)
 				{
 					SC_ScriptError("Unknown sister weapon type '%s' in '%s'\n", v.GetChars(), ti->TypeName.GetChars());
@@ -3689,14 +3689,14 @@ void FinishThingdef()
 			fuglyname v;
 
 			v = defaults->WeaponClass;
-			if (v != NAME_None)
+			if (v != NAME_None && v.IsValidName())
 			{
-				defaults->WeaponClass = PClass::FindClass(v.GetChars());
+				defaults->WeaponClass = PClass::FindClass(v);
 				if (!defaults->WeaponClass)
 				{
 					SC_ScriptError("Unknown weapon type '%s' in '%s'\n", v.GetChars(), ti->TypeName.GetChars());
 				}
-				else if (defaults->WeaponClass->ParentClass != RUNTIME_CLASS(AWeapon))
+				else if (!defaults->WeaponClass->IsDescendantOf(RUNTIME_CLASS(AWeapon)))
 				{
 					SC_ScriptError("Invalid weapon type '%s' in '%s'\n", v.GetChars(), ti->TypeName.GetChars());
 				}
diff --git a/tools/makewad/makewad.c b/tools/makewad/makewad.c
index b4d05827bf..8e0540460d 100644
--- a/tools/makewad/makewad.c
+++ b/tools/makewad/makewad.c
@@ -450,6 +450,10 @@ int buildwad (FILE *listfile, char *listfilename, char *makecmd, char *makefile)
 	return ret;
 }
 
+#if !defined(_MSC_VER)
+#define __cdecl
+#endif
+
 int __cdecl main (int argc, char **argv)
 {
 	FILE *listfile = NULL;