From 639ce9e55edce0999061bd323b21d4c39d7265e9 Mon Sep 17 00:00:00 2001
From: Thiago Macieira <thiago.macieira@intel.com>
Date: Thu, 8 Mar 2018 16:26:28 -0800
Subject: Add nullptr comparison to Q{Explicitly,}SharedDataPointer

[ChangeLog][QtCore][QSharedDataPointer] Added operator== for nullptr.

[ChangeLog][QtCore][QExplicitlySharedDataPointer] Added operator== for
nullptr.

Task-number: QTBUG-66635
Task-number: QTBUG-66946
Change-Id: I72f5230ad59948f784eafffd151a18e34384d844
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
---
 src/corelib/tools/qshareddata.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'src/corelib/tools/qshareddata.h')

diff --git a/src/corelib/tools/qshareddata.h b/src/corelib/tools/qshareddata.h
index dbf0907a0f..f5572f3a00 100644
--- a/src/corelib/tools/qshareddata.h
+++ b/src/corelib/tools/qshareddata.h
@@ -132,6 +132,18 @@ private:
     T *d;
 };
 
+template <class T> inline bool operator==(std::nullptr_t p1, const QSharedDataPointer<T> &p2)
+{
+    Q_UNUSED(p1);
+    return !p2;
+}
+
+template <class T> inline bool operator==(const QSharedDataPointer<T> &p1, std::nullptr_t p2)
+{
+    Q_UNUSED(p2);
+    return !p1;
+}
+
 template <class T> class QExplicitlySharedDataPointer
 {
 public:
@@ -263,6 +275,18 @@ Q_INLINE_TEMPLATE QExplicitlySharedDataPointer<T>::QExplicitlySharedDataPointer(
     : d(adata)
 { if (d) d->ref.ref(); }
 
+template <class T> inline bool operator==(std::nullptr_t p1, const QExplicitlySharedDataPointer<T> &p2)
+{
+    Q_UNUSED(p1);
+    return !p2;
+}
+
+template <class T> inline bool operator==(const QExplicitlySharedDataPointer<T> &p1, std::nullptr_t p2)
+{
+    Q_UNUSED(p2);
+    return !p1;
+}
+
 template <class T>
 Q_INLINE_TEMPLATE void qSwap(QSharedDataPointer<T> &p1, QSharedDataPointer<T> &p2)
 { p1.swap(p2); }
-- 
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