1 files changed, 2 insertions, 1 deletions

diff --git a/qmake/tools/qbitarray.cpp b/qmake/tools/qbitarray.cpp
index 4f4e14b..1aaf963 100644
--- a/qmake/tools/qbitarray.cpp
+++ b/qmake/tools/qbitarray.cpp
@@ -152,97 +152,98 @@ QBitArray::QBitArray() : QByteArray( 0, 0 )
 
     \sa fill()
 */
 
 QBitArray::QBitArray( uint size ) : QByteArray( 0, 0 )
 {
     bitarr_data *x = new bitarr_data;
     Q_CHECK_PTR( x );
     x->nbits = 0;
     setSharedBlock( x );
     resize( size );
 }
 
 /*!
     \fn QBitArray::QBitArray( const QBitArray &a )
 
     Constructs a shallow copy of \a a.
 */
 
 /*!
     \fn QBitArray &QBitArray::operator=( const QBitArray &a )
 
     Assigns a shallow copy of \a a to this bit array and returns a
     reference to this array.
 */
 
 
 /*!
     Pad last byte with 0-bits.
 */
 void QBitArray::pad0()
 {
     uint sz = size();
     if ( sz && sz%8 )
         *(data()+sz/8) &= (1 << (sz%8)) - 1;
 }
 
 
 /*!
     \fn uint QBitArray::size() const
 
     Returns the bit array's size (number of bits).
 
     \sa resize()
 */
 
 /*!
     Resizes the bit array to \a size bits and returns TRUE if the bit
-    array could be resized; otherwise returns FALSE.
+    array could be resized; otherwise returns FALSE. The array becomes
+    a null array if \a size == 0.
 
     If the array is expanded, the new bits are set to 0.
 
     \sa size()
 */
 
 bool QBitArray::resize( uint size )
 {
     uint s = this->size();
     if ( !QByteArray::resize( (size+7)/8 ) )
                 return FALSE;                   // cannot resize
     SHBLOCK->nbits = size;
             if ( size != 0 ) {                  // not null array
         int ds = (int)(size+7)/8 - (int)(s+7)/8;// number of bytes difference
                 if ( ds > 0 )                   // expanding array
                     memset( data() + (s+7)/8, 0, ds );//   reset new data
     }
     return TRUE;
 }
 
 
 /*!
     Fills the bit array with \a v (1's if \a v is TRUE, or 0's if \a v
     is FALSE).
 
     fill() resizes the bit array to \a size bits if \a size is
     nonnegative.
 
     Returns FALSE if a nonnegative \e size was specified and the bit
     array could not be resized; otherwise returns TRUE.
 
     \sa resize()
 */
 
 bool QBitArray::fill( bool v, int size )
 {
             if ( size >= 0 ) {                  // resize first
         if ( !resize( size ) )
                     return FALSE;               // cannot resize
     } else {
         size = this->size();
     }
     if ( size > 0 )
         memset( data(), v ? 0xff : 0, (size + 7) / 8 );
     if ( v )
         pad0();
     return TRUE;
 }