diff --git a/include/math.c b/include/math.c
index 3ed0649..bbb6126 100644
--- a/include/math.c
+++ b/include/math.c
@@ -125,7 +125,7 @@ float exp(float f)
 	
 	int	fi = (int)ff;
 	
-	union xx {
+	union {
 		float	f;
 		int		i[2];
 	}	x;
@@ -155,7 +155,7 @@ float log(float f)
 	if (f == 0.0)
 		return 1.0;
 
-	union xx {
+	union {
 		float	f;
 		int		i[2];
 	}	x;
@@ -193,7 +193,7 @@ float sqrt(float f)
 {
 	if (f >= 0)
 	{
-		union xx {
+		union {
 			float	f;
 			int		i[2];
 		}	x;
@@ -216,7 +216,7 @@ float sqrt(float f)
 
 bool isinf(float f)
 {
-	union xx {
+	union {
 		float		f;
 		unsigned	i[2];
 	}	x;
@@ -228,7 +228,7 @@ bool isinf(float f)
 
 bool isfinite(float f)
 {
-	union xx {
+	union {
 		float		f;
 		unsigned	i[2];
 	}	x;
diff --git a/oscar64/Declaration.cpp b/oscar64/Declaration.cpp
index 09d00d4..e30d317 100644
--- a/oscar64/Declaration.cpp
+++ b/oscar64/Declaration.cpp
@@ -1301,11 +1301,17 @@ const Ident* Declaration::MangleIdent(void)
 		}
 		else if (mType == DT_TYPE_STRUCT)
 		{
-			mMangleIdent = mQualIdent->PreMangle("struct ");
+			if (mQualIdent)
+				mMangleIdent = mQualIdent->PreMangle("struct ");
+			else
+				mMangleIdent = Ident::Unique("struct");
 		}
 		else if (mType == DT_TYPE_ENUM)
 		{
-			mMangleIdent = mQualIdent->PreMangle("enum ");
+			if (mQualIdent)
+				mMangleIdent = mQualIdent->PreMangle("enum ");
+			else
+				mMangleIdent = Ident::Unique("enum");
 		}
 		else if (mType == DT_TYPE_VOID)
 		{
diff --git a/oscar64/Parser.cpp b/oscar64/Parser.cpp
index ace7eed..af521dc 100644
--- a/oscar64/Parser.cpp
+++ b/oscar64/Parser.cpp
@@ -174,8 +174,10 @@ Declaration* Parser::ParseStructDeclaration(uint64 flags, DecType dt, Declaratio
 			}
 		}
 	}
-	else
-		mErrors->Error(mScanner->mLocation, EERR_UNIMPLEMENTED, "Unnamed structs are not implemented");
+	else if ((mCompilerOptions & COPT_CPLUSPLUS) && mScope->mLevel < SLEVEL_CLASS)
+	{
+		mErrors->Error(mScanner->mLocation, EERR_INVALID_IDENTIFIER, "Invalid unnamed struct on global level");
+	}
 
 	if (!dec->mIdent || !dec->mScope)
 	{