Initialize fields to suppress gcc warnings.

Author: paulhuggett

demo/ci_create_discovery/ci_create_discovery.cpp

@@ -26,13 +26,16 @@ int main() {
   constexpr std::size_t buffer_size = 256;
   constexpr midi2::ci::header header{
       .device_id = 0_b7, .version = 2_b7, .remote_muid = my_muid, .local_muid = midi2::ci::broadcast_muid};
-  constexpr midi2::ci::discovery_reply discovery{.manufacturer = {0x12_b7, 0x23_b7, 0x34_b7},
-                                                 .family = 0x1779_b14,
-                                                 .model = 0x2B5D_b14,
-                                                 .version = {0x01_b7, 0x00_b7, 0x00_b7, 0x00_b7},
-                                                 .capability = 0x7F_b7,
-                                                 .max_sysex_size = midi2::ci::b28{buffer_size},
-                                                 .output_path_id = 0_b7};
+  constexpr midi2::ci::discovery_reply discovery{
+      .manufacturer = {0x12_b7, 0x23_b7, 0x34_b7},
+      .family = 0x1779_b14,
+      .model = 0x2B5D_b14,
+      .version = {0x01_b7, 0x00_b7, 0x00_b7, 0x00_b7},
+      .capability = 0x7F_b7,
+      .max_sysex_size = midi2::ci::b28{buffer_size},
+      .output_path_id = 0_b7,
+      .function_block = 0_b7,
+  };
   std::array<std::byte, buffer_size> message{};
   // NOLINTNEXTLINE(llvm-qualified-auto,readability-qualified-auto)
   auto const first = std::begin(message);

include/midi2/ci_types.hpp

@@ -1225,7 +1225,11 @@ struct capabilities {
 };
 
 constexpr capabilities capabilities::make(packed::capabilities_v1 const &other) noexcept {
-  return {.num_simultaneous = b7{to_underlying(other.num_simultaneous)}};
+  return {
+      .num_simultaneous = b7{to_underlying(other.num_simultaneous)},
+      .major_version = b7{},
+      .minor_version = b7{},
+  };
 }
 constexpr capabilities capabilities::make(packed::capabilities_v2 const &other) noexcept {
   return {
@@ -1289,6 +1293,8 @@ struct capabilities_reply {
 constexpr capabilities_reply capabilities_reply::make(packed::capabilities_reply_v1 const &other) noexcept {
   return {
       .num_simultaneous = b7{to_underlying(other.num_simultaneous)},
+      .major_version = b7{},
+      .minor_version = b7{},
   };
 }
 constexpr capabilities_reply capabilities_reply::make(packed::capabilities_reply_v2 const &other) noexcept {