[trivial] Add end of namespace comments

Author: practicalswift

doc/developer-notes.md

@@ -45,7 +45,7 @@ class Class
         return true;
     }
 }
-}
+} // namespace foo
 ```
 
 Doxygen comments
@@ -408,6 +408,21 @@ Source code organization
 
   - *Rationale*: Avoids symbol conflicts
 
+- Terminate namespaces with a comment (`// namespace mynamespace`). The comment
+  should be placed on the same line as the brace closing the namespace, e.g.
+
+```c++
+namespace mynamespace {
+    ...
+} // namespace mynamespace
+
+namespace {
+    ...
+} // namespace
+```
+
+  - *Rationale*: Avoids confusion about the namespace context
+
 GUI
 -----
 

src/base58.cpp

@@ -225,7 +225,7 @@ class CBitcoinAddressVisitor : public boost::static_visitor<bool>
     bool operator()(const CNoDestination& no) const { return false; }
 };
 
-} // anon namespace
+} // namespace
 
 bool CBitcoinAddress::Set(const CKeyID& id)
 {

src/bench/checkblock.cpp

@@ -11,7 +11,7 @@
 
 namespace block_bench {
 #include "bench/data/block413567.raw.h"
-}
+} // namespace block_bench
 
 // These are the two major time-sinks which happen after we have fully received
 // a block off the wire, but before we can relay the block on to peers using

src/compat/glibc_sanity.cpp

@@ -56,7 +56,7 @@ bool sanity_test_fdelt()
 }
 #endif
 
-} // anon namespace
+} // namespace
 
 bool glibc_sanity_test()
 {

src/compat/glibcxx_sanity.cpp

@@ -38,7 +38,7 @@ bool sanity_test_list(unsigned int size)
     return true;
 }
 
-} // anon namespace
+} // namespace
 
 // trigger: string::at(x) on an empty string to trigger __throw_out_of_range_fmt.
 // test: force std::string to throw an out_of_range exception. Verify that

src/dbwrapper.cpp

@@ -209,4 +209,4 @@ const std::vector<unsigned char>& GetObfuscateKey(const CDBWrapper &w)
     return w.obfuscate_key;
 }
 
-};
+} // namespace dbwrapper_private

src/init.cpp

@@ -809,7 +809,7 @@ int nUserMaxConnections;
 int nFD;
 ServiceFlags nLocalServices = NODE_NETWORK;
 
-}
+} // namespace
 
 [[noreturn]] static void new_handler_terminate()
 {

src/net_processing.cpp

@@ -122,7 +122,7 @@ namespace {
     MapRelay mapRelay;
     /** Expiration-time ordered list of (expire time, relay map entry) pairs, protected by cs_main). */
     std::deque<std::pair<int64_t, MapRelay::iterator>> vRelayExpiration;
-} // anon namespace
+} // namespace
 
 //////////////////////////////////////////////////////////////////////////////
 //
@@ -555,7 +555,7 @@ void FindNextBlocksToDownload(NodeId nodeid, unsigned int count, std::vector<con
     }
 }
 
-} // anon namespace
+} // namespace
 
 bool GetNodeStateStats(NodeId nodeid, CNodeStateStats &stats) {
     LOCK(cs_main);

src/protocol.cpp

@@ -39,7 +39,7 @@ const char *SENDCMPCT="sendcmpct";
 const char *CMPCTBLOCK="cmpctblock";
 const char *GETBLOCKTXN="getblocktxn";
 const char *BLOCKTXN="blocktxn";
-};
+} // namespace NetMsgType
 
 /** All known message types. Keep this in the same order as the list of
  * messages above and in protocol.h.

src/pubkey.cpp

@@ -11,7 +11,7 @@ namespace
 {
 /* Global secp256k1_context object used for verification. */
 secp256k1_context* secp256k1_context_verify = NULL;
-}
+} // namespace
 
 /** This function is taken from the libsecp256k1 distribution and implements
  *  DER parsing for ECDSA signatures, while supporting an arbitrary subset of