Fixed account api based on testing.

contracts/eoslib/account.h

@@ -14,10 +14,11 @@
 
 extern "C" {
    /**
-    * @brief Return the balance for the provided account
+    * @brief Retrieve the balance for the provided account
     *
     * @param balance -  a pointer to a range of memory to store balance data
     * @param len     -  length of the range of memory to store balance data
+    * @ret true if account information is retrieved
     *
     * @pre data is a valid pointer to a range of memory at least datalen bytes long
     * @pre data is a pointer to a balance object
@@ -31,6 +32,6 @@ extern "C" {
     *  @endcode
     */
 
-   void account_balance_get( void* balance, uint32_t len );
+   bool account_balance_get( void* balance, uint32_t len );
    ///@ } accountcapi
 }

contracts/eoslib/account.hpp

@@ -5,7 +5,7 @@
 *
 */
 #pragma once
-#include <eoslib/math.hpp>
+#include <eoslib/account.h>
 #include <eoslib/print.hpp>
 
 
@@ -75,7 +75,7 @@ struct PACKED (account_balance) {
 
 bool get(account_balance& b)
 {
-   return account_balance(&b, sizeof(account_balance));
+   return account_balance_get(&b, sizeof(account_balance));
 }
 
 } }

libraries/chain/wasm_interface.cpp

@@ -735,6 +735,8 @@ DEFINE_INTRINSIC_FUNCTION2(env,account_balance_get,account_balance_get,i32,i32,c
 
   account_balance& total_balance = memoryRef<account_balance>( mem, charptr );
 
+  wasm.current_apply_context->require_scope(total_balance.account);
+
   auto& db = wasm.current_apply_context->db;
   auto* balance        = db.find< balance_object,by_owner_name >( total_balance.account );
   auto* staked_balance = db.find<staked_balance_object,by_owner_name>( total_balance.account );