[PATCH] explicit_bzero: add poison

[Paul Eggert]

* m4/string_h.m4 (gl_STRING_H): Poison explicit_bzero.
This was inadvertently omitted when explicit_bzero was added.
---
 ChangeLog      | 6 ++++++
 m4/string_h.m4 | 3 ++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 5436871fea..14283da87e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2022-11-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+       explicit_bzero: add poison
+       * m4/string_h.m4 (gl_STRING_H): Poison explicit_bzero.
+       This was inadvertently omitted when explicit_bzero was added.
+
 2022-11-27  Arsen Arsenović  <arsen@aarsen.me>
 
        bootstrap: Fix --help output.
diff --git a/m4/string_h.m4 b/m4/string_h.m4
index 9e09b96e16..df44e85e59 100644
--- a/m4/string_h.m4
+++ b/m4/string_h.m4
@@ -21,7 +21,8 @@ AC_DEFUN_ONCE([gl_STRING_H],
   dnl guaranteed by C89.
   gl_WARN_ON_USE_PREPARE([[#include <string.h>
     ]],
-    [ffsl ffsll memmem mempcpy memrchr rawmemchr stpcpy stpncpy strchrnul
+    [explicit_bzero ffsl ffsll memmem mempcpy memrchr
+     rawmemchr stpcpy stpncpy strchrnul
      strdup strncat strndup strnlen strpbrk strsep strcasestr strtok_r
      strerror_r strerrorname_np sigabbrev_np sigdescr_np strsignal strverscmp])
 
-- 
2.37.2