From 725adcd9f006401d5839dc1cc946002f7ee0573d Mon Sep 17 00:00:00 2001
From: Ramesh Nair <ram@hiddentao.com>
Date: Fri, 11 Oct 2019 16:14:33 +0900
Subject: [PATCH] Check calls to _hide() in more places

This simply fortifies the logic by checking the return value of calls to `_hide()` in more places.
---
 src/matching_market.sol | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/matching_market.sol b/src/matching_market.sol
index d98a612..46fd8b2 100644
--- a/src/matching_market.sol
+++ b/src/matching_market.sol
@@ -187,7 +187,7 @@ contract MatchingMarket is MatchingEvents, ExpiringMarket, DSNote {
         require(!isOfferSorted(id));    //make sure offers[id] is not yet sorted
         require(isActive(id));          //make sure offers[id] is active
 
-        _hide(id);                      //remove offer from unsorted offers list
+        require(_hide(id));                      //remove offer from unsorted offers list
         _sort(id, pos);                 //put offer into the sorted offers list
         LogInsert(msg.sender, id);
         return true;
@@ -399,7 +399,7 @@ contract MatchingMarket is MatchingEvents, ExpiringMarket, DSNote {
                 //offers[id] must be removed from sorted list because all of it is bought
                 _unsort(id);
             }else{
-                _hide(id);
+                require(_hide(id));
             }
         }
         require(super.buy(id, amount));