QHostInfo: simplify assignment operator

The d_ptr is never nullptr. If it could be, then other's d_ptr could
also be nullptr, and we would dereference the null pointer.

Guarding against self-assignment is nevertheless a good practice.

Fixes static analyzer warning
5fc3780532e30c6350a0aa1ad2188a4c.

Change-Id: I07ff808e4c4f5bf07b4d6663f1fb4a3301a0fec7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
(cherry picked from commit 6e334a85a82f1fedc39f54511a9d1b0c7b512d5b)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 5 insertions, 4 deletions

diff --git a/src/network/kernel/qhostinfo.cpp b/src/network/kernel/qhostinfo.cpp
index b3d6844e43..fbc3248815 100644
--- a/src/network/kernel/qhostinfo.cpp
+++ b/src/network/kernel/qhostinfo.cpp
@@ -609,10 +609,11 @@ QHostInfo::QHostInfo(const QHostInfo &other)
 */
 QHostInfo &QHostInfo::operator=(const QHostInfo &other)
 {
-    if (d_ptr)
-        *d_ptr = *other.d_ptr;
-    else
-        d_ptr = new QHostInfoPrivate(*other.d_ptr);
+    if (this == &other)
+      return *this;
+
+    Q_ASSERT(d_ptr && other.d_ptr);
+    *d_ptr = *other.d_ptr;
     return *this;
 }