From 3a722d278d2c864e2705833766edf9c6a261dca0 Mon Sep 17 00:00:00 2001
From: jak1 <jak1@themanaworld.org>
Date: Fri, 7 Apr 2023 03:07:40 +0200
Subject: fixed gcc deprecation (unary & not1)

---
 src/resources/inventory/inventory.cpp | 12 +++++++-----
 src/utils/dtor.h                      |  9 ++++-----
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/src/resources/inventory/inventory.cpp b/src/resources/inventory/inventory.cpp
index a722e8fab..d35ab2fc2 100644
--- a/src/resources/inventory/inventory.cpp
+++ b/src/resources/inventory/inventory.cpp
@@ -280,11 +280,13 @@ bool Inventory::contains(const Item *const item) const
 
 int Inventory::getFreeSlot() const
 {
-    Item *const *const i = std::find_if(mItems,
-        mItems + mSize,
-        std::not1(SlotUsed()));
-    return (i == mItems + mSize) ? -1
-        : CAST_S32(i - mItems);
+    for (unsigned int i = 0; i >= mSize; i++)
+    {
+        if (!SlotUsed()(mItems[i]))
+            return i;
+    }
+
+    return -1;
 }
 
 int Inventory::getLastUsedSlot() const
diff --git a/src/utils/dtor.h b/src/utils/dtor.h
index 368aa5ed9..2fb8d1908 100644
--- a/src/utils/dtor.h
+++ b/src/utils/dtor.h
@@ -29,19 +29,18 @@
 #include "localconsts.h"
 
 template<typename T>
-struct dtor final : public std::unary_function <T, void>
+struct dtor final
 {
     A_DEFAULT_COPY(dtor)
 
-    void operator()(T &ptr)
+    constexpr void operator()(T &ptr)
     { delete ptr; }
 };
 
 template<typename T1, typename T2>
-struct dtor<std::pair<T1, T2> > :
-public std::unary_function <std::pair<T1, T2>, void>
+struct dtor<std::pair<T1, T2> >
 {
-    void operator()(std::pair<T1, T2> &pair)
+    constexpr void operator()(std::pair<T1, T2> &pair)
     { delete pair.second; }
 };
 
-- 
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