From d9cd88309313fabdb6437443b1319c1a813b8dcc Mon Sep 17 00:00:00 2001
From: David Lawrence Ramsey <dolorous@users.sourceforge.net>
Date: Thu, 24 Sep 2009 09:10:54 -0500
Subject: Backport fix for [2865661] to 0.5.

---
 crawl-ref/source/dungeon.cc  |  3 ++-
 crawl-ref/source/mon-util.cc | 39 ++++++++++++++++-----------------------
 2 files changed, 18 insertions(+), 24 deletions(-)

diff --git a/crawl-ref/source/dungeon.cc b/crawl-ref/source/dungeon.cc
index 93418cf7eb..a260e77785 100644
--- a/crawl-ref/source/dungeon.cc
+++ b/crawl-ref/source/dungeon.cc
@@ -4566,7 +4566,8 @@ static void _dgn_give_mon_spec_items(mons_spec &mspec,
         if (item_made != NON_ITEM && item_made != -1)
         {
             item_def &item(mitm[item_made]);
-            mon.pickup_item(item, 0, true);
+            if (!mon.pickup_item(item, 0, true))
+                destroy_item(item_made, true);
         }
     }
 }
diff --git a/crawl-ref/source/mon-util.cc b/crawl-ref/source/mon-util.cc
index d2996b26e8..f7b617d780 100644
--- a/crawl-ref/source/mon-util.cc
+++ b/crawl-ref/source/mon-util.cc
@@ -3875,7 +3875,7 @@ item_def *monsters::weapon(int which_attack)
         return NULL;
 
     // Even/odd attacks use main/offhand weapon
-    if ( which_attack > 1 )
+    if (which_attack > 1)
         which_attack &= 1;
 
     // This randomly picks one of the wielded weapons for monsters that can use
@@ -5115,17 +5115,6 @@ bool monsters::pickup_potion(item_def &item, int near)
     if (!this->can_drink_potion(ptype))
         return (false);
 
-    switch (ptype)
-    {
-    case POT_SPEED:
-    case POT_INVISIBILITY:
-        // If there are any item using monsters that are permanently
-        // invisible, this might have to be restricted.
-        break;
-    default:
-        return (false);
-    }
-
     return (pickup(item, MSLOT_POTION, near));
 }
 
@@ -8035,16 +8024,18 @@ bool monsters::can_drink_potion(potion_type ptype) const
     if (mons_class_is_stationary(this->type))
         return (false);
 
-    if (mons_itemuse(this) >= MONUSE_STARTING_EQUIPMENT)
+    if (mons_itemuse(this) < MONUSE_STARTING_EQUIPMENT)
+        return (false);
+
+    // These monsters cannot drink.
+    if (mons_is_skeletal(type) || mons_is_insubstantial(type)
+        || mons_species() == MONS_LICH || mons_genus(type) == MONS_MUMMY)
     {
-        if (mons_is_skeletal(type) || mons_is_insubstantial(type)
-            || mons_species() == MONS_LICH || mons_genus(type) == MONS_MUMMY)
-        {
-            return (false);
-        }
+        return (false);
+    }
 
-        switch (ptype)
-        {
+    switch (ptype)
+    {
         case POT_HEALING:
         case POT_HEAL_WOUNDS:
             return (holiness() != MH_NONLIVING
@@ -8052,11 +8043,13 @@ bool monsters::can_drink_potion(potion_type ptype) const
         case POT_BLOOD:
         case POT_BLOOD_COAGULATED:
             return (mons_species() == MONS_VAMPIRE);
+        case POT_SPEED:
+        case POT_INVISIBILITY:
+            // If there are any item using monsters that are permanently
+            // invisible, this might have to be restricted.
+            return (true);
         default:
             break;
-        }
-
-        return (true);
     }
 
     return (false);
-- 
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