diff -r 2e8878770de0 -r 8aea65ae1eaf src/cx/allocator.h
--- a/src/cx/allocator.h	Sun Mar 06 13:57:36 2022 +0100
+++ b/src/cx/allocator.h	Sat Apr 09 16:37:43 2022 +0200
@@ -124,7 +124,7 @@
  * @return a pointer to the allocated memory
  */
 void *cxMalloc(
-        CxAllocator *allocator,
+        CxAllocator const *allocator,
         size_t n
 )
 __attribute__((__malloc__))
@@ -143,7 +143,7 @@
  * @return a pointer to the re-allocated memory
  */
 void *cxRealloc(
-        CxAllocator *allocator,
+        CxAllocator const *allocator,
         void *mem,
         size_t n
 )
@@ -166,7 +166,7 @@
  * @return zero on success, non-zero on failure
  */
 int cxReallocate(
-        CxAllocator *allocator,
+        CxAllocator const *allocator,
         void **mem,
         size_t n
 )
@@ -181,7 +181,7 @@
  * @return a pointer to the allocated memory
  */
 void *cxCalloc(
-        CxAllocator *allocator,
+        CxAllocator const *allocator,
         size_t nelem,
         size_t n
 )
@@ -197,7 +197,7 @@
  * @param mem a pointer to the block to free
  */
 void cxFree(
-        CxAllocator *allocator,
+        CxAllocator const *allocator,
         void *mem
 )
 __attribute__((__nonnull__));