realloc: document portability problem

* doc/posix-functions/realloc.texi (realloc): Mention pitfalls of
passing 0 size to realloc.

Signed-off-by: Eric Blake <eblake@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 3bc9240738..58f81959cb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2011-03-24  Eric Blake  <eblake@redhat.com>
+
+	realloc: document portability problem
+	* doc/posix-functions/realloc.texi (realloc): Mention pitfalls of
+	passing 0 size to realloc.
+
 2011-03-23  Ben Walton  <bwalton@artsci.utoronto.ca>
 
 	doc: update users.txt