From 02adb60f089dc5679b9833544c228ba650029229 Mon Sep 17 00:00:00 2001
From: orbitcowboy <orbitcowboy@web.de>
Date: Mon, 11 Nov 2019 09:29:16 +0100
Subject: [PATCH] test std.cfg: Added a regression test for std::vsprintf().
 The first argument is allowed to be a null pointer.

---
 test/cfg/std.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/test/cfg/std.cpp b/test/cfg/std.cpp
index 91e6cedd1..5019c887d 100644
--- a/test/cfg/std.cpp
+++ b/test/cfg/std.cpp
@@ -2900,6 +2900,14 @@ void uninitvar_vsprintf(void)
     (void)std::vsprintf(s,format,arg);
 }
 
+void nullPointer_vsprintf(va_list arg,const char *format)
+{
+    char *s = NULL;
+    (void)std::vsprintf(s,format,arg); // Its allowed to provide 's' as NULL pointer
+    // cppcheck-suppress nullPointer
+    (void)std::vsprintf(s,NULL,arg);
+}
+
 void uninitvar_vswprintf(void)
 {
     wchar_t *s;