Add extra reporting to push_spenders.

Author: evoskuil

include/bitcoin/database/error.hpp

@@ -51,6 +51,9 @@ enum error_t : uint8_t
     integrity12,
     integrity13,
     integrity14,
+    integrity15,
+    integrity16,
+    integrity17,
 
     /// memory map
     open_open,

include/bitcoin/database/impl/query/consensus.ipp

@@ -205,17 +205,25 @@ code CLASS::push_spenders(tx_links& out, const point& point,
     auto it = store_.point.it(table::point::compose(point));
     if (!it)
     {
+        const auto key1 = it.key();
+        const auto link1 = it.self();
+        const auto get1 = it.get();
         it.reset();
 
-        table::point::record get{};
-        if (!store_.point.get(self, get))
+        if (key1 != table::point::compose(point))
             return error::integrity12;
-
-        if (get.hash != point.hash())
+        if (!link1.is_terminal())
             return error::integrity13;
+        if (is_null(get1))
+            return error::integrity14;
 
+        table::point::record get{};
+        if (!store_.point.get(self, get))
+            return error::integrity15;
+        if (get.hash != point.hash())
+            return error::integrity16;
         if (get.index != point.index())
-            return error::integrity14;
+            return error::integrity17;
 
         return error::integrity4;
     }

src/error.cpp

@@ -44,6 +44,9 @@ DEFINE_ERROR_T_MESSAGE_MAP(error)
     { integrity12, "store corrupted12" },
     { integrity13, "store corrupted13" },
     { integrity14, "store corrupted14" },
+    { integrity15, "store corrupted15" },
+    { integrity16, "store corrupted16" },
+    { integrity17, "store corrupted17" },
 
     // memory map
     { open_open, "opening open file" },