1 files changed, 6 insertions, 6 deletions

diff --git a/src/corelib/tools/qringbuffer.cpp b/src/corelib/tools/qringbuffer.cpp
index db2004dfd9..4a2dfdec2b 100644
--- a/src/corelib/tools/qringbuffer.cpp
+++ b/src/corelib/tools/qringbuffer.cpp
@@ -74,14 +74,14 @@ void QRingBuffer::free(qint64 bytes)
     Q_ASSERT(bytes <= bufferSize);
 
     while (bytes > 0) {
-        const qint64 blockSize = buffers.first().size() - head;
+        const qint64 blockSize = buffers.constFirst().size() - head;
 
         if (tailBuffer == 0 || blockSize > bytes) {
             // keep a single block around if it does not exceed
             // the basic block size, to avoid repeated allocations
             // between uses of the buffer
             if (bufferSize <= bytes) {
-                if (buffers.first().size() <= basicBlockSize) {
+                if (buffers.constFirst().size() <= basicBlockSize) {
                     bufferSize = 0;
                     head = tail = 0;
                 } else {
@@ -114,8 +114,8 @@ char *QRingBuffer::reserve(qint64 bytes)
     } else {
         const qint64 newSize = bytes + tail;
         // if need buffer reallocation
-        if (newSize > buffers.last().size()) {
-            if (newSize > buffers.last().capacity() && (tail >= basicBlockSize
+        if (newSize > buffers.constLast().size()) {
+            if (newSize > buffers.constLast().capacity() && (tail >= basicBlockSize
                     || newSize >= MaxByteArraySize)) {
                 // shrink this buffer to its current size
                 buffers.last().resize(tail);
@@ -180,7 +180,7 @@ void QRingBuffer::chop(qint64 bytes)
             // the basic block size, to avoid repeated allocations
             // between uses of the buffer
             if (bufferSize <= bytes) {
-                if (buffers.first().size() <= basicBlockSize) {
+                if (buffers.constFirst().size() <= basicBlockSize) {
                     bufferSize = 0;
                     head = tail = 0;
                 } else {
@@ -198,7 +198,7 @@ void QRingBuffer::chop(qint64 bytes)
         bytes -= tail;
         buffers.removeLast();
         --tailBuffer;
-        tail = buffers.last().size();
+        tail = buffers.constLast().size();
     }
 }