Add QByteArray overload for the QLatin1String ctor.

This increases source compatibility when QT_NO_CAST_FROM_BYTEARRAY
is used.

Change-Id: Ie1a1cfa8acac2fa91aa8f217d91e22289be8b38f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

2 files changed, 12 insertions, 0 deletions

diff --git a/src/corelib/tools/qstring.cpp b/src/corelib/tools/qstring.cpp
index 79e3577727..584502f713 100644
--- a/src/corelib/tools/qstring.cpp
+++ b/src/corelib/tools/qstring.cpp
@@ -7164,6 +7164,17 @@ QString &QString::setRawData(const QChar *unicode, int size)
     \sa latin1()
 */
 
+/*! \fn QLatin1String::QLatin1String(const QByteArray &str)
+
+    Constructs a QLatin1String object that stores \a str.
+
+    The string data is \e not copied. The caller must be able to
+    guarantee that \a str will not be deleted or modified as long as
+    the QLatin1String object exists.
+
+    \sa latin1()
+*/
+
 /*! \fn const char *QLatin1String::latin1() const
 
     Returns the Latin-1 string stored in this object.
diff --git a/src/corelib/tools/qstring.h b/src/corelib/tools/qstring.h
index 26959d81f3..b71484f4cb 100644
--- a/src/corelib/tools/qstring.h
+++ b/src/corelib/tools/qstring.h
@@ -647,6 +647,7 @@ class QLatin1String
 public:
     Q_DECL_CONSTEXPR inline explicit QLatin1String(const char *s) : m_size(s ? int(strlen(s)) : 0), m_data(s) {}
     Q_DECL_CONSTEXPR inline explicit QLatin1String(const char *s, int sz) : m_size(sz), m_data(s) {}
+    Q_DECL_CONSTEXPR inline explicit QLatin1String(const QByteArray &s) : m_size(strlen(s.constData())), m_data(s.constData()) {}
 
     inline const char *latin1() const { return m_data; }
     inline int size() const { return m_size; }