Cleared fall through warnings under GCC 7 (Issue 441)

asn.cpp

@@ -330,7 +330,8 @@ void EncodedObjectFilter::Put(const byte *inString, size_t length)
 			if (!m_queue.Get(m_id))
 				return;
 			m_queue.TransferTo(CurrentTarget(), 1);
-			m_state = LENGTH;	// fall through
+			m_state = LENGTH;
+		// fall through
 		case LENGTH:
 		{
 			byte b;
@@ -356,15 +357,16 @@ void EncodedObjectFilter::Put(const byte *inString, size_t length)
 				m_state = IDENTIFIER;
 				break;
 			}
-			m_state = BODY;		// fall through
+			m_state = BODY;
 		}
+		// fall through
 		case BODY:
 			m_lengthRemaining -= m_queue.TransferTo(CurrentTarget(), m_lengthRemaining);
 
 			if (m_lengthRemaining == 0)
 				m_state = IDENTIFIER;
-
-		case TAIL:			// silence warnings
+		// fall through
+		case TAIL:
 		case ALL_DONE:
 		default: ;;
 		}

fltrimpl.h

@@ -54,6 +54,7 @@
 
 #define FILTER_OUTPUT2_MODIFIABLE(site, statement, output, length, messageEnd)	\
 	{\
+	/* fall through */ \
 	case site:	\
 	statement;	\
 	if (OutputModifiable(site, output, length, messageEnd, blocking))	\
@@ -65,6 +66,7 @@
 
 #define FILTER_OUTPUT2_MAYBE_MODIFIABLE(site, statement, output, length, messageEnd, modifiable)	\
 	{\
+	/* fall through */ \
 	case site:	\
 	statement;	\
 	if (modifiable ? OutputModifiable(site, output, length, messageEnd, blocking) : Output(site, output, length, messageEnd, blocking))	\

siphash.h

@@ -214,21 +214,27 @@ void SipHash_Base<C,D,T_128bit>::TruncatedFinal(byte *digest, size_t digestSize)
 	m_b[0] += m_idx; m_b[0] <<= 56U;
 	switch (m_idx)
 	{
-		// all fall through
 		case 7:
 			m_b[0] |= ((word64)m_acc[6]) << 48;
+			// fall through
 		case 6:
 			m_b[0] |= ((word64)m_acc[5]) << 40;
+			// fall through
 		case 5:
 			m_b[0] |= ((word64)m_acc[4]) << 32;
+			// fall through
 		case 4:
 			m_b[0] |= ((word64)m_acc[3]) << 24;
+			// fall through
 		case 3:
 			m_b[0] |= ((word64)m_acc[2]) << 16;
+			// fall through
 		case 2:
 			m_b[0] |= ((word64)m_acc[1]) << 8;
+			// fall through
 		case 1:
 			m_b[0] |= ((word64)m_acc[0]);
+			// fall through
 		case 0:
 			break;
 	}

twofish.cpp

@@ -37,7 +37,9 @@ inline word32 Twofish::Base::h0(word32 x, const word32 *key, unsigned int kLen)
 	{
 #define Q(a, b, c, d, t) q[a][GETBYTE(t,0)] ^ (q[b][GETBYTE(t,1)] << 8) ^ (q[c][GETBYTE(t,2)] << 16) ^ (q[d][GETBYTE(t,3)] << 24)
 	case 4: x = Q(1, 0, 0, 1, x) ^ key[6];
+	// fall through
 	case 3: x = Q(1, 1, 0, 0, x) ^ key[4];
+	// fall through
 	case 2: x = Q(0, 1, 0, 1, x) ^ key[2];
 			x = Q(0, 0, 1, 1, x) ^ key[0];
 	}