gcc: fix uninitialized constructor warnings

src/cryptonote_basic/cryptonote_basic.h

@@ -77,7 +77,7 @@ namespace cryptonote
   // outputs <= HF_VERSION_VIEW_TAGS
   struct txout_to_key
   {
-    txout_to_key() { }
+    txout_to_key(): key() { }
     txout_to_key(const crypto::public_key &_key) : key(_key) { }
     crypto::public_key key;
   };
@@ -85,7 +85,7 @@ namespace cryptonote
   // outputs >= HF_VERSION_VIEW_TAGS
   struct txout_to_tagged_key
   {
-    txout_to_tagged_key() { }
+    txout_to_tagged_key(): key(), view_tag() { }
     txout_to_tagged_key(const crypto::public_key &_key, const crypto::view_tag &_view_tag) : key(_key), view_tag(_view_tag) { }
     crypto::public_key key;
     crypto::view_tag view_tag; // optimization to reduce scanning time

src/cryptonote_core/blockchain.h

@@ -1609,6 +1609,6 @@ namespace cryptonote
      */
     void send_miner_notifications(uint64_t height, const crypto::hash &seed_hash, const crypto::hash &prev_id, uint64_t already_generated_coins);
 
-    friend class BlockchainAndPool;
+    friend struct BlockchainAndPool;
   };
 }  // namespace cryptonote

src/cryptonote_core/blockchain_and_pool.h

@@ -37,6 +37,7 @@
 
 #include "blockchain.h"
 #include "tx_pool.h"
+#include "warnings.h"
 
 namespace cryptonote
 {
@@ -52,7 +53,10 @@ struct BlockchainAndPool
 {
     Blockchain blockchain;
     tx_memory_pool tx_pool;
-  
+
+PUSH_WARNINGS
+DISABLE_GCC_WARNING(uninitialized)
     BlockchainAndPool(): blockchain(tx_pool), tx_pool(blockchain) {}
+POP_WARNINGS
 };
 }

src/cryptonote_core/tx_pool.h

@@ -676,7 +676,7 @@ private:
     //! Next timestamp that a DB check for relayable txes is allowed
     std::atomic<time_t> m_next_check;
 
-    friend class BlockchainAndPool;
+    friend struct BlockchainAndPool;
   };
 }
 

src/ringct/rctTypes.h

@@ -218,7 +218,7 @@ namespace rct {
       rct::key a, b, t;
 
       Bulletproof():
-        A({}), S({}), T1({}), T2({}), taux({}), mu({}), a({}), b({}), t({}) {}
+        A({}), S({}), T1({}), T2({}), taux({}), mu({}), a({}), b({}), t({}), V({}), L({}), R({}) {}
       Bulletproof(const rct::key &V, const rct::key &A, const rct::key &S, const rct::key &T1, const rct::key &T2, const rct::key &taux, const rct::key &mu, const rct::keyV &L, const rct::keyV &R, const rct::key &a, const rct::key &b, const rct::key &t):
         V({V}), A(A), S(S), T1(T1), T2(T2), taux(taux), mu(mu), L(L), R(R), a(a), b(b), t(t) {}
       Bulletproof(const rct::keyV &V, const rct::key &A, const rct::key &S, const rct::key &T1, const rct::key &T2, const rct::key &taux, const rct::key &mu, const rct::keyV &L, const rct::keyV &R, const rct::key &a, const rct::key &b, const rct::key &t):
@@ -253,7 +253,7 @@ namespace rct {
       rct::key r1, s1, d1;
       rct::keyV L, R;
 
-      BulletproofPlus() {}
+      BulletproofPlus(): V(), A(), A1(), B(), r1(), s1(), d1(), L(), R() {}
       BulletproofPlus(const rct::key &V, const rct::key &A, const rct::key &A1, const rct::key &B, const rct::key &r1, const rct::key &s1, const rct::key &d1, const rct::keyV &L, const rct::keyV &R):
         V({V}), A(A), A1(A1), B(B), r1(r1), s1(s1), d1(d1), L(L), R(R) {}
       BulletproofPlus(const rct::keyV &V, const rct::key &A, const rct::key &A1, const rct::key &B, const rct::key &r1, const rct::key &s1, const rct::key &d1, const rct::keyV &L, const rct::keyV &R):