1 files changed, 44 insertions, 23 deletions
diff --git a/src/corelib/kernel/qcore_mac_objc.mm b/src/corelib/kernel/qcore_mac_objc.mm
index 73f8296021..8ac062a154 100644
--- a/src/corelib/kernel/qcore_mac_objc.mm
+++ b/src/corelib/kernel/qcore_mac_objc.mm
@@ -1,6 +1,7 @@
 /****************************************************************************
  **
- ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+ ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+ ** Copyright (C) 2014 Petroules Corporation.
  ** Contact: http://www.qt-project.org/legal
  **
  ** This file is part of the QtCore module of the Qt Toolkit.
@@ -47,6 +48,8 @@
 
 QT_BEGIN_NAMESPACE
 
+typedef qint16 (*GestaltFunction)(quint32 selector, qint32 *response);
+
 NSString *QCFString::toNSString(const QString &string)
 {
     // The const cast below is safe: CfStringRef is immutable and so is NSString.
@@ -58,31 +61,49 @@ QString QCFString::toQString(const NSString *nsstr)
     return toQString(reinterpret_cast<CFStringRef>(nsstr));
 }
 
-#ifdef Q_OS_IOS
-QSysInfo::MacVersion qt_ios_version()
+QAppleOperatingSystemVersion qt_apple_os_version()
 {
-    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
-
-    int major = 0, minor = 0;
-    NSArray *components = [[UIDevice currentDevice].systemVersion componentsSeparatedByString:@"."];
-    switch ([components count]) {
-    case 3:
-        // We don't care about the patch version
-    case 2:
-        minor = [[components objectAtIndex:1] intValue];
-        // fall through
-    case 1:
-        major = [[components objectAtIndex:0] intValue];
-        break;
-    default:
-        Q_UNREACHABLE();
+    QAppleOperatingSystemVersion v = {0, 0, 0};
+#if QT_MAC_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_10, __IPHONE_8_0)
+    if ([NSProcessInfo instancesRespondToSelector:@selector(operatingSystemVersion)]) {
+        NSOperatingSystemVersion osv = NSProcessInfo.processInfo.operatingSystemVersion;
+        v.major = osv.majorVersion;
+        v.minor = osv.minorVersion;
+        v.patch = osv.patchVersion;
+        return v;
     }
-
-    [pool release];
-
-    return QSysInfo::MacVersion(Q_MV_IOS(major, minor));
-}
 #endif
+    // Use temporary variables so we can return 0.0.0 (unknown version)
+    // in case of an error partway through determining the OS version
+    qint32 major = 0, minor = 0, patch = 0;
+#if defined(Q_OS_IOS)
+    @autoreleasepool {
+        NSArray *parts = [UIDevice.currentDevice.systemVersion componentsSeparatedByString:@"."];
+        major = parts.count > 0 ? [[parts objectAtIndex:0] intValue] : 0;
+        minor = parts.count > 1 ? [[parts objectAtIndex:1] intValue] : 0;
+        patch = parts.count > 2 ? [[parts objectAtIndex:2] intValue] : 0;
+    }
+#elif defined(Q_OS_OSX)
+    static GestaltFunction pGestalt = 0;
+    if (!pGestalt) {
+        CFBundleRef b = CFBundleGetBundleWithIdentifier(CFSTR("com.apple.CoreServices"));
+        pGestalt = reinterpret_cast<GestaltFunction>(CFBundleGetFunctionPointerForName(b,
+                                                     CFSTR("Gestalt")));
+    }
+    if (!pGestalt)
+        return v;
+    if (pGestalt('sys1', &major) != 0)
+        return v;
+    if (pGestalt('sys2', &minor) != 0)
+        return v;
+    if (pGestalt('sys3', &patch) != 0)
+        return v;
+#endif
+    v.major = major;
+    v.minor = minor;
+    v.patch = patch;
+    return v;
+}
 
 QT_END_NAMESPACE