Add [[falltrhough]] for gcc 7

2 files changed, 12 insertions, 11 deletions

diff --git a/vespalib/src/vespa/vespalib/data/slime/json_format.cpp b/vespalib/src/vespa/vespalib/data/slime/json_format.cpp
index 856f9f654c2..88b99725302 100644
--- a/vespalib/src/vespa/vespalib/data/slime/json_format.cpp
+++ b/vespalib/src/vespa/vespalib/data/slime/json_format.cpp
@@ -426,6 +426,7 @@ JsonDecoder::decodeNumber(Inserter &inserter)
         switch (c) {
         case '+': case '-': case '.': case 'e': case 'E':
             isLong = false;
+            [[fallthrough]];
         case '0': case '1': case '2': case '3': case '4':
         case '5': case '6': case '7': case '8': case '9':
             value.push_back(c);
diff --git a/vespalib/src/vespa/vespalib/util/bobhash.h b/vespalib/src/vespa/vespalib/util/bobhash.h
index 332e5b88cea..6c92896e538 100644
--- a/vespalib/src/vespa/vespalib/util/bobhash.h
+++ b/vespalib/src/vespa/vespalib/util/bobhash.h
@@ -135,18 +135,18 @@ public:
         c += length;
         switch(len)              /* all the case statements fall through */
         {
-        case 11: c += (static_cast<uint32_t>(k[10]) << 24);
-        case 10: c += (static_cast<uint32_t>(k[9]) << 16);
-        case 9 : c += (static_cast<uint32_t>(k[8]) << 8);
+        case 11: c += (static_cast<uint32_t>(k[10]) << 24); [[fallthrough]];
+        case 10: c += (static_cast<uint32_t>(k[9]) << 16); [[fallthrough]];
+        case 9 : c += (static_cast<uint32_t>(k[8]) << 8); [[fallthrough]];
             /* the first byte of c is reserved for the length */
-        case 8 : b += (static_cast<uint32_t>(k[7]) << 24);
-        case 7 : b += (static_cast<uint32_t>(k[6]) << 16);
-        case 6 : b += (static_cast<uint32_t>(k[5]) << 8);
-        case 5 : b += k[4];
-        case 4 : a += (static_cast<uint32_t>(k[3]) << 24);
-        case 3 : a += (static_cast<uint32_t>(k[2]) << 16);
-        case 2 : a += (static_cast<uint32_t>(k[1]) << 8);
-        case 1 : a += k[0];
+        case 8 : b += (static_cast<uint32_t>(k[7]) << 24); [[fallthrough]];
+        case 7 : b += (static_cast<uint32_t>(k[6]) << 16); [[fallthrough]];
+        case 6 : b += (static_cast<uint32_t>(k[5]) << 8); [[fallthrough]];
+        case 5 : b += k[4]; [[fallthrough]];
+        case 4 : a += (static_cast<uint32_t>(k[3]) << 24); [[fallthrough]];
+        case 3 : a += (static_cast<uint32_t>(k[2]) << 16); [[fallthrough]];
+        case 2 : a += (static_cast<uint32_t>(k[1]) << 8); [[fallthrough]];
+        case 1 : a += k[0]; [[fallthrough]];
             /* case 0: nothing left to add */
         }
         bobhash_mix(a,b,c);