Undefined behaviour fixes

Fixes issues reported in #8120

6 files changed, 24 insertions, 12 deletions

diff --git a/contrib/epee/include/net/levin_base.h b/contrib/epee/include/net/levin_base.h
index df59a6c44..b680691ad 100644
--- a/contrib/epee/include/net/levin_base.h
+++ b/contrib/epee/include/net/levin_base.h
@@ -48,7 +48,7 @@ namespace levin
 	{
 		uint64_t m_signature;
 		uint64_t m_cb;
-		bool     m_have_to_return_data;
+		uint8_t  m_have_to_return_data;
 		uint32_t m_command;
 		int32_t  m_return_code;
 		uint32_t m_reservedA; //probably some flags in future
@@ -63,7 +63,7 @@ namespace levin
   {
     uint64_t m_signature;
     uint64_t m_cb;
-    bool     m_have_to_return_data;
+    uint8_t  m_have_to_return_data;
     uint32_t m_command;
     int32_t  m_return_code;
     uint32_t m_flags;
diff --git a/contrib/epee/include/net/levin_client.inl b/contrib/epee/include/net/levin_client.inl
index 2f048b027..177dd8967 100644
--- a/contrib/epee/include/net/levin_client.inl
+++ b/contrib/epee/include/net/levin_client.inl
@@ -82,7 +82,7 @@ int levin_client_impl::invoke(int command, const epee::span<const uint8_t> in_bu
 	bucket_head head = {0};
 	head.m_signature = SWAP64LE(LEVIN_SIGNATURE);
 	head.m_cb = SWAP64LE(in_buff.size());
-	head.m_have_to_return_data = true;
+	head.m_have_to_return_data = 1;
 	head.m_command = SWAP32LE(command);
 	if(!m_transport.send(&head, sizeof(head)))
 		return -1;
@@ -118,7 +118,7 @@ int levin_client_impl::notify(int command, const std::string& in_buff)
 	bucket_head head = {0};
 	head.m_signature = SWAP64LE(LEVIN_SIGNATURE);
 	head.m_cb = SWAP64LE(in_buff.size());
-	head.m_have_to_return_data = false;
+	head.m_have_to_return_data = 0;
 	head.m_command = SWAP32LE(command);
 	
 	if(!m_transport.send((const char*)&head, sizeof(head)))
@@ -141,7 +141,7 @@ inline
   bucket_head2 head = {0};
   head.m_signature = SWAP64LE(LEVIN_SIGNATURE);
   head.m_cb = SWAP64LE(in_buff.size());
-  head.m_have_to_return_data = true;
+  head.m_have_to_return_data = 1;
   head.m_command = SWAP32LE(command);
   head.m_return_code = SWAP32LE(0);
   head.m_flags = SWAP32LE(LEVIN_PACKET_REQUEST);
@@ -179,7 +179,7 @@ inline
   bucket_head2 head = {0};
   head.m_signature = SWAP64LE(LEVIN_SIGNATURE);
   head.m_cb = SWAP64LE(in_buff.size());
-  head.m_have_to_return_data = false;
+  head.m_have_to_return_data = 0;
   head.m_command = SWAP32LE(command);
   head.m_return_code = SWAP32LE(0);
   head.m_flags = SWAP32LE(LEVIN_PACKET_REQUEST);
diff --git a/contrib/epee/include/net/levin_client_async.h b/contrib/epee/include/net/levin_client_async.h
index ed92f4b95..067707edf 100644
--- a/contrib/epee/include/net/levin_client_async.h
+++ b/contrib/epee/include/net/levin_client_async.h
@@ -242,7 +242,7 @@ namespace levin
 			bucket_head head = {0};
 			head.m_signature = LEVIN_SIGNATURE;
 			head.m_cb = in_buff.size();
-			head.m_have_to_return_data = true;
+			head.m_have_to_return_data = 1;
 			head.m_id = target;
 #ifdef TRACE_LEVIN_PACKETS_BY_GUIDS
 			::UuidCreate(&head.m_id);
@@ -320,7 +320,7 @@ namespace levin
 			bucket_head head = {0};
 			head.m_signature = LEVIN_SIGNATURE;
 			head.m_cb = in_buff.size();
-			head.m_have_to_return_data = false;
+			head.m_have_to_return_data = 0;
 			head.m_id = target;
 #ifdef TRACE_LEVIN_PACKETS_BY_GUIDS
 			::UuidCreate(&head.m_id);
@@ -510,7 +510,7 @@ namespace levin
 
 
 				head.m_cb = return_buff.size();
-				head.m_have_to_return_data = false;
+				head.m_have_to_return_data = 0;
 				head.m_protocol_version = LEVIN_PROTOCOL_VER_1;
 				head.m_flags = LEVIN_PACKET_RESPONSE;
 
diff --git a/contrib/epee/include/net/levin_helper.h b/contrib/epee/include/net/levin_helper.h
index da926a914..541e0948d 100644
--- a/contrib/epee/include/net/levin_helper.h
+++ b/contrib/epee/include/net/levin_helper.h
@@ -46,7 +46,7 @@ namespace levin
 		levin::bucket_head& head = *(levin::bucket_head*)(&buff[0]);
 		head.m_signature = SWAP64LE(LEVIN_SIGNATURE);
 		head.m_cb = 0;
-		head.m_have_to_return_data = true;
+		head.m_have_to_return_data = 1;
 		head.m_command = SWAP32LE(command_id);
 		head.m_return_code = SWAP32LE(1);
 		head.m_reservedA = rand(); //probably some flags in future
@@ -68,7 +68,7 @@ namespace levin
 		levin::bucket_head& head = *(levin::bucket_head*)(&buff[0]);
 		head.m_signature = SWAP64LE(LEVIN_SIGNATURE);
 		head.m_cb = 0;
-		head.m_have_to_return_data = true;
+		head.m_have_to_return_data = 1;
 		head.m_command = SWAP32LE(command_id);
 		head.m_return_code = SWAP32LE(1);
 		head.m_reservedA = rand(); //probably some flags in future
diff --git a/contrib/epee/include/net/levin_protocol_handler.h b/contrib/epee/include/net/levin_protocol_handler.h
index c510cfd79..fa7d1a5ab 100644
--- a/contrib/epee/include/net/levin_protocol_handler.h
+++ b/contrib/epee/include/net/levin_protocol_handler.h
@@ -156,7 +156,7 @@ namespace levin
 						std::string return_buff;
 						m_current_head.m_return_code = m_config.m_pcommands_handler->invoke(m_current_head.m_command, buff_to_invoke, return_buff, m_conn_context);
 						m_current_head.m_cb = return_buff.size();
-						m_current_head.m_have_to_return_data = false;
+						m_current_head.m_have_to_return_data = 0;
 
 						return_buff.insert(0, (const char*)&m_current_head, sizeof(m_current_head));
 						if(!m_psnd_hndlr->do_send(byte_slice{std::move(return_buff)}))
diff --git a/contrib/epee/include/storages/portable_storage_from_bin.h b/contrib/epee/include/storages/portable_storage_from_bin.h
index 9e7b6ec34..6f081dbc7 100644
--- a/contrib/epee/include/storages/portable_storage_from_bin.h
+++ b/contrib/epee/include/storages/portable_storage_from_bin.h
@@ -157,6 +157,18 @@ namespace epee
       pod_val = CONVERT_POD(pod_val);
     }
     
+    template<>
+    void throwable_buffer_reader::read<bool>(bool& pod_val)
+    {
+      RECURSION_LIMITATION();
+      static_assert(std::is_pod<bool>::value, "POD type expected");
+      static_assert(sizeof(bool) == sizeof(uint8_t), "We really shouldn't use bool directly in serialization code. Replace it with uint8_t if this assert triggers!");
+      uint8_t t;
+      read(&t, sizeof(t));
+      CHECK_AND_ASSERT_THROW_MES(t <= 1, "Invalid bool value " << t);
+      pod_val = (t != 0);
+    }
+    
     template<class t_type>
     t_type throwable_buffer_reader::read()
     {