From c17d3a10220cf4afbf751712e88895e2989d0b46 Mon Sep 17 00:00:00 2001
From: orbitcowboy <orbitcowboy@web.de>
Date: Wed, 20 Apr 2022 17:52:38 +0200
Subject: [PATCH] posix.cfg: Ensure null pointer input is correctly handled for
 stpcpy().

---
 test/cfg/posix.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/test/cfg/posix.c b/test/cfg/posix.c
index a94aaa8d3..ef1ecb546 100644
--- a/test/cfg/posix.c
+++ b/test/cfg/posix.c
@@ -216,6 +216,16 @@ char * overlappingWriteFunction_stpcpy(char *src, char *dest)
     return stpcpy(src, src);
 }
 
+char * nullPointer_stpcpy(char *src, char *dest)
+{
+    // No warning shall be shown:
+    (void) stpcpy(dest, src);
+    // cppcheck-suppress nullPointer
+    (void) stpcpy(dest, NULL);
+    // cppcheck-suppress nullPointer
+    return stpcpy(NULL, src);
+}
+
 void overlappingWriteFunction_bcopy(char *buf, const size_t count)
 {
     // No warning shall be shown: