diff -r 3dc9075df822 -r eb9e7bd40a8e src/cx/buffer.h
--- a/src/cx/buffer.h	Sat Jan 29 14:32:04 2022 +0100
+++ b/src/cx/buffer.h	Sun Jan 30 14:19:00 2022 +0100
@@ -100,7 +100,7 @@
 /**
  * UCX buffer.
  */
-typedef cx_buffer_s *CxBuffer;
+typedef cx_buffer_s CxBuffer;
 
 /**
  * Creates a new buffer.
@@ -115,7 +115,7 @@
  * @param flags buffer features (see cx_buffer_s.flags)
  * @return the new buffer
  */
-CxBuffer cxBufferCreate(
+CxBuffer *cxBufferCreate(
         void *space,
         size_t capacity,
         int flags
@@ -129,7 +129,7 @@
  *
  * @param buffer the buffer to destroy
  */
-void cxBufferDestroy(CxBuffer buffer);
+void cxBufferDestroy(CxBuffer *buffer);
 
 /**
  * Creates a new buffer and fills it with content copied from another buffer.
@@ -142,8 +142,8 @@
  * @param flags features for the new buffer (#CX_BUFFER_FREE_CONTENTS will always be enabled)
  * @return a new buffer containing the extraction
  */
-CxBuffer cxBufferExtract(
-        CxBuffer src,
+CxBuffer *cxBufferExtract(
+        CxBuffer *src,
         size_t start,
         size_t length,
         int flags
@@ -193,7 +193,7 @@
  * @return 0 on success, non-zero if a required auto-extension fails
  */
 int cxBufferShift(
-        CxBuffer buffer,
+        CxBuffer *buffer,
         off_t shift
 );
 
@@ -207,7 +207,7 @@
  * @see cxBufferShift()
  */
 int cxBufferShiftRight(
-        CxBuffer buffer,
+        CxBuffer *buffer,
         size_t shift
 );
 
@@ -224,7 +224,7 @@
  * @see cxBufferShift()
  */
 int cxBufferShiftLeft(
-        CxBuffer buffer,
+        CxBuffer *buffer,
         size_t shift
 );
 
@@ -249,7 +249,7 @@
  *
  */
 int cxBufferSeek(
-        CxBuffer buffer,
+        CxBuffer *buffer,
         off_t offset,
         int whence
 );
@@ -271,7 +271,7 @@
  * @return non-zero, if the current buffer position has exceeded the last
  * available byte of the buffer.
  */
-int cxBufferEof(CxBuffer buffer);
+int cxBufferEof(CxBuffer *buffer);
 
 
 /**
@@ -284,7 +284,7 @@
  * @return 0 on success or a non-zero value on failure
  */
 int cxBufferMinimumCapacity(
-        CxBuffer buffer,
+        CxBuffer *buffer,
         size_t capacity
 );
 
@@ -305,7 +305,7 @@
         void const *ptr,
         size_t size,
         size_t nitems,
-        CxBuffer buffer
+        CxBuffer *buffer
 );
 
 /**
@@ -325,7 +325,7 @@
         void *ptr,
         size_t size,
         size_t nitems,
-        CxBuffer buffer
+        CxBuffer *buffer
 );
 
 /**
@@ -344,7 +344,7 @@
  * reached and automatic extension is not enabled or not possible
  */
 int cxBufferPut(
-        CxBuffer buffer,
+        CxBuffer *buffer,
         int c
 );
 
@@ -356,7 +356,7 @@
  * @param buffer the buffer to read from
  * @return the character or \c EOF, if the end of the buffer is reached
  */
-int cxBufferGet(CxBuffer buffer);
+int cxBufferGet(CxBuffer *buffer);
 
 /**
  * Writes a string to a buffer.
@@ -366,7 +366,7 @@
  * @return the number of bytes written
  */
 size_t cxBufferPutString(
-        CxBuffer buffer,
+        CxBuffer *buffer,
         const char *str
 );