Add other integer overloads to QFlag's constructor

This avoids "change of sign" warnings as found by ICC when the high
bit is set. This often happens when you do
    X & ~Y

as ~Y probably has bit 31 on. If the enum is unsigned, then there's a sign conversion.

Change-Id: Ia5f221d928ac0155f4504a70c4046e60c25fbf3b
Reviewed-by: Kurt Pattyn <pattyn.kurt@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/src/corelib/global/qflags.h b/src/corelib/global/qflags.h
index dd4222b89f..9e97724fec 100644
--- a/src/corelib/global/qflags.h
+++ b/src/corelib/global/qflags.h
@@ -53,13 +53,19 @@ class QFlag
 {
     int i;
 public:
-    Q_DECL_CONSTEXPR inline QFlag(int i);
+#if !defined(__LP64__) && !defined(Q_QDOC)
+    Q_DECL_CONSTEXPR inline QFlag(long ai) : i(int(ai)) {}
+    Q_DECL_CONSTEXPR inline QFlag(ulong ai) : i(int(long(ai))) {}
+#endif
+    Q_DECL_CONSTEXPR inline QFlag(int ai) : i(ai) {}
+    Q_DECL_CONSTEXPR inline QFlag(uint ai) : i(int(ai)) {}
+    Q_DECL_CONSTEXPR inline QFlag(short ai) : i(int(ai)) {}
+    Q_DECL_CONSTEXPR inline QFlag(ushort ai) : i(int(uint(ai))) {}
     Q_DECL_CONSTEXPR inline operator int() const { return i; }
+    Q_DECL_CONSTEXPR inline operator uint() const { return uint(i); }
 };
 Q_DECLARE_TYPEINFO(QFlag, Q_PRIMITIVE_TYPE);
 
-Q_DECL_CONSTEXPR inline QFlag::QFlag(int ai) : i(ai) {}
-
 class QIncompatibleFlag
 {
     int i;