From 3d5bff624aa23bdf6521d15449b385558fff5a8d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sl=C3=A1vek=20Banko?= <slavek.banko@axis.cz>
Date: Fri, 12 Apr 2024 15:23:05 +0200
Subject: Fix compatibility with C++17.
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Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
---
 kmail/keyresolver.cpp | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

(limited to 'kmail/keyresolver.cpp')

diff --git a/kmail/keyresolver.cpp b/kmail/keyresolver.cpp
index 68187d2a2..c0b0cf692 100644
--- a/kmail/keyresolver.cpp
+++ b/kmail/keyresolver.cpp
@@ -335,7 +335,7 @@ static std::vector<GpgME::Key> trustedOrConfirmed( const std::vector<GpgME::Key>
 }
 
 namespace {
-  struct IsNotForFormat : public std::unary_function<GpgME::Key,bool> {
+  struct IsNotForFormat : public std::function<bool(GpgME::Key)> {
     IsNotForFormat( Kleo::CryptoMessageFormat f ) : format( f ) {}
 
     bool operator()( const GpgME::Key & key ) const {
@@ -347,7 +347,7 @@ namespace {
     const Kleo::CryptoMessageFormat format;
   };
 
-  struct IsForFormat : std::unary_function<GpgME::Key,bool> {
+  struct IsForFormat : std::function<bool(GpgME::Key)> {
     explicit IsForFormat( Kleo::CryptoMessageFormat f )
       : protocol( isOpenPGP( f ) ? GpgME::Context::OpenPGP :
                   isSMIME( f )   ? GpgME::Context::CMS     :
@@ -364,7 +364,7 @@ namespace {
 
 
 
-class Kleo::KeyResolver::SigningPreferenceCounter : public std::unary_function<Kleo::KeyResolver::Item,void> {
+class Kleo::KeyResolver::SigningPreferenceCounter : public std::function<void(Kleo::KeyResolver::Item)> {
 public:
   SigningPreferenceCounter()
     : mTotal( 0 ),
@@ -409,7 +409,7 @@ void Kleo::KeyResolver::SigningPreferenceCounter::operator()( const Kleo::KeyRes
 
 
 
-class Kleo::KeyResolver::EncryptionPreferenceCounter : public std::unary_function<Item,void> {
+class Kleo::KeyResolver::EncryptionPreferenceCounter : public std::function<void(Item)> {
   const Kleo::KeyResolver * _this;
 public:
   EncryptionPreferenceCounter( const Kleo::KeyResolver * kr, EncryptionPreference defaultPreference )
@@ -476,7 +476,7 @@ void Kleo::KeyResolver::EncryptionPreferenceCounter::operator()( Item & item ) {
 
 namespace {
 
-  class FormatPreferenceCounterBase : public std::unary_function<Kleo::KeyResolver::Item,void> {
+  class FormatPreferenceCounterBase : public std::function<void(Kleo::KeyResolver::Item)> {
   public:
     FormatPreferenceCounterBase()
       : mTotal( 0 ),
-- 
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