Alpha 1.0.21: Fix more compilation bugs.

Telegram/SourceFiles/core/utils.h

@@ -53,6 +53,24 @@ inline void t_assert_fail(const char *message, const char *file, int32 line) {
 #define Ensures(condition) t_assert_full(condition, "\"" #condition "\"", __FILE__, __LINE__)
 #endif // Ensures
 
+// Define specializations for QByteArray for Qt 5.3.2, because
+// QByteArray in Qt 5.3.2 doesn't declare "pointer" subtype.
+#ifdef OS_MAC_OLD
+namespace gsl {
+
+template <>
+inline span<char> make_span<QByteArray>(QByteArray &cont) {
+	return span<char>(cont.data(), cont.size());
+}
+
+template <>
+inline span<const char> make_span(const QByteArray &cont) {
+	return span<const char>(cont.constData(), cont.size());
+}
+
+} // namespace gsl
+#endif // OS_MAC_OLD
+
 namespace base {
 
 template <typename T, size_t N>