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diff --git a/lib/strpbrk.c b/lib/strpbrk.c
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+/* Copyright (C) 1991, 1994, 2000, 2002-2003, 2006, 2009-2023 Free Software
+ Foundation, Inc.
+
+ NOTE: The canonical source of this file is maintained with the GNU C Library.
+ Bugs can be reported to bug-glibc@prep.ai.mit.edu.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+#include <stddef.h>
+#include <string.h>
+
+#if _LIBC
+# undef strpbrk
+#endif
+
+/* Find the first occurrence in S of any character in ACCEPT. */
+char *
+strpbrk (const char *s, const char *accept)
+{
+ while (*s != '\0')
+ {
+ const char *a = accept;
+ while (*a != '\0')
+ if (*a++ == *s)
+ return (char *) s;
+ ++s;
+ }
+
+ return NULL;
+}