8 files changed, 8 insertions, 32 deletions

diff --git a/src/Blocks/BlockButton.h b/src/Blocks/BlockButton.h
index 2b646c6e8..ed4e12482 100644
--- a/src/Blocks/BlockButton.h
+++ b/src/Blocks/BlockButton.h
@@ -92,10 +92,7 @@ public:
 				return 0x0;
 			}
 		}
-		#if !defined(__clang__)
-			ASSERT(!"Unknown BLOCK_FACE");
-			return 0;
-		#endif
+		UNREACHABLE("Unsupported block face");
 	}
 
 	inline static eBlockFace BlockMetaDataToBlockFace(NIBBLETYPE a_Meta)
diff --git a/src/Blocks/BlockCocoaPod.h b/src/Blocks/BlockCocoaPod.h
index 035cc2f4f..4a1fb8c10 100644
--- a/src/Blocks/BlockCocoaPod.h
+++ b/src/Blocks/BlockCocoaPod.h
@@ -82,10 +82,7 @@ public:
 				return 0;
 			}
 		}
-		#if !defined(__clang__)
-			ASSERT(!"Unknown BLOCK_FACE");
-			return 0;
-		#endif
+		UNREACHABLE("Unsupported block face");
 	}
 
 	virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
diff --git a/src/Blocks/BlockLadder.h b/src/Blocks/BlockLadder.h
index a17cfc1a1..29c0cf2b7 100644
--- a/src/Blocks/BlockLadder.h
+++ b/src/Blocks/BlockLadder.h
@@ -60,10 +60,7 @@ public:
 				return 0x2;
 			}
 		}
-		#if !defined(__clang__)
-			ASSERT(!"Unknown BLOCK_FACE");
-			return 0;
-		#endif
+		UNREACHABLE("Unsupported block face");
 	}
 
 	static eBlockFace MetaDataToDirection(NIBBLETYPE a_MetaData)
diff --git a/src/Blocks/BlockLever.h b/src/Blocks/BlockLever.h
index 6750649ae..6cb80222e 100644
--- a/src/Blocks/BlockLever.h
+++ b/src/Blocks/BlockLever.h
@@ -65,10 +65,7 @@ public:
 			case BLOCK_FACE_YM:   return 0x0;
 			case BLOCK_FACE_NONE: return 0x6;
 		}
-		#if !defined(__clang__)
-			ASSERT(!"Unknown BLOCK_FACE");
-			return 0;
-		#endif
+		UNREACHABLE("Unsupported block face");
 	}
 
 	inline static eBlockFace BlockMetaDataToBlockFace(NIBBLETYPE a_Meta)
diff --git a/src/Blocks/BlockQuartz.h b/src/Blocks/BlockQuartz.h
index c2435cd5e..c87240cf1 100644
--- a/src/Blocks/BlockQuartz.h
+++ b/src/Blocks/BlockQuartz.h
@@ -63,10 +63,7 @@ public:
 				return a_QuartzMeta;  // No idea, give a special meta (all sides the same)
 			}
 		}
-		#if !defined(__clang__)
-			ASSERT(!"Unknown BLOCK_FACE");
-			return 0;
-		#endif
+		UNREACHABLE("Unsupported block face");
 	}
 
 	virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
diff --git a/src/Blocks/BlockSideways.h b/src/Blocks/BlockSideways.h
index df94b6ac3..5bc7874b4 100644
--- a/src/Blocks/BlockSideways.h
+++ b/src/Blocks/BlockSideways.h
@@ -64,10 +64,7 @@ public:
 				return a_Meta | 0xC;  // No idea, give a special meta
 			}
 		}
-		#if !defined(__clang__)
-			ASSERT(!"Unknown BLOCK_FACE");
-			return 0;
-		#endif
+		UNREACHABLE("Unsupported block face");
 	}
 } ;
 
diff --git a/src/Blocks/BlockTrapdoor.h b/src/Blocks/BlockTrapdoor.h
index b3703299f..f8e5df09a 100644
--- a/src/Blocks/BlockTrapdoor.h
+++ b/src/Blocks/BlockTrapdoor.h
@@ -83,10 +83,7 @@ public:
 				return 0;
 			}
 		}
-		#if !defined(__clang__)
-			ASSERT(!"Unknown BLOCK_FACE");
-			return 0;
-		#endif
+		UNREACHABLE("Unsupported block face");
 	}
 
 	inline static eBlockFace BlockMetaDataToBlockFace(NIBBLETYPE a_Meta)
diff --git a/src/Blocks/BlockTripwireHook.h b/src/Blocks/BlockTripwireHook.h
index f0f6ff722..d544fff86 100644
--- a/src/Blocks/BlockTripwireHook.h
+++ b/src/Blocks/BlockTripwireHook.h
@@ -45,10 +45,7 @@ public:
 				return 0x0;
 			}
 		}
-		#if !defined(__clang__)
-			ASSERT(!"Unknown BLOCK_FACE");
-			return 0;
-		#endif
+		UNREACHABLE("Unsupported block face");
 	}
 
 	inline static eBlockFace MetadataToDirection(NIBBLETYPE a_Meta)