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-rw-r--r--storage/xtradb/include/ut0mem.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/storage/xtradb/include/ut0mem.h b/storage/xtradb/include/ut0mem.h
index f14606be966..57dfb08f41c 100644
--- a/storage/xtradb/include/ut0mem.h
+++ b/storage/xtradb/include/ut0mem.h
@@ -119,7 +119,7 @@ UNIV_INTERN
void
ut_free(
/*====*/
- void* ptr); /*!< in, own: memory block */
+ void* ptr); /*!< in, own: memory block, can be NULL */
#ifndef UNIV_HOTBACKUP
/**********************************************************************//**
Implements realloc. This is needed by /pars/lexyy.c. Otherwise, you should not