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-rw-r--r--doc/developer/memtypes.rst7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/developer/memtypes.rst b/doc/developer/memtypes.rst
index e04049001d..952b316ea0 100644
--- a/doc/developer/memtypes.rst
+++ b/doc/developer/memtypes.rst
@@ -131,3 +131,10 @@ Usage
- if ptr is NULL, no operation is performed (as is guaranteed by system
implementations.) Do not surround XFREE with ``if (ptr != NULL)``
checks.
+
+.. c:function:: void XCOUNTFREE(struct memtype *mtype, void *ptr)
+
+ This macro is used to count the ``ptr`` as freed without actually freeing
+ it. This may be needed in some very specific cases, for example, when the
+ ``ptr`` was allocated using any of the above wrappers and will be freed
+ by some external library using simple ``free()``.