buildroot/package/ell/0001-build-Add-rawmemchr-to-missing.h.patch

From 3916c1cc32be205e185a8a56de5cde1b9ec60e81 Mon Sep 17 00:00:00 2001
From: Denis Kenzior <denkenz@gmail.com>
Date: Mon, 30 Nov 2020 13:00:11 -0600
Subject: [PATCH] build: Add rawmemchr to missing.h

For those systems (i.e. musl) that do not support this

[Upstream: https://git.kernel.org/pub/scm/libs/ell/ell.git/patch/?id=3916c1cc32be205e185a8a56de5cde1b9ec60e81]
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
---
 configure.ac  |  1 +
 ell/missing.h | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/configure.ac b/configure.ac
index 1e5ead9..f34add1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -98,6 +98,7 @@ AC_ARG_ENABLE(ubsan, AC_HELP_STRING([--enable-ubsan],
 ])
 
 AC_CHECK_FUNCS(explicit_bzero)
+AC_CHECK_FUNCS(rawmemchr)
 
 AC_CHECK_FUNC(signalfd, dummy=yes,
 			AC_MSG_ERROR(signalfd support is required))
diff --git a/ell/missing.h b/ell/missing.h
index 6b9b0fd..2a3e647 100644
--- a/ell/missing.h
+++ b/ell/missing.h
@@ -67,3 +67,13 @@ static inline void explicit_bzero(void *s, size_t n)
 #ifndef SO_BINDTOIFINDEX
 #define SO_BINDTOIFINDEX 62
 #endif
+
+#ifndef HAVE_RAWMEMCHR
+static inline void *rawmemchr(const void *s, int c)
+{
+_Pragma("GCC diagnostic push")
+_Pragma("GCC diagnostic ignored \"-Wstringop-overflow=\"")
+	return memchr(s, c, (size_t) -1);
+_Pragma("GCC diagnostic pop")
+}
+#endif
-- 
2.29.2