diff --git a/cfg/gnu.cfg b/cfg/gnu.cfg
index 2be2d520a..e568c0aad 100644
--- a/cfg/gnu.cfg
+++ b/cfg/gnu.cfg
@@ -185,6 +185,21 @@
       <not-null/>
     </arg>
   </function>
+  <!-- https://man7.org/linux/man-pages/man3/getpw.3.html -->
+  <!-- int getpw(uid_t uid, char *buf); -->
+    <function name="getpw">
+    <returnValue type="int"/>
+    <noreturn>false</noreturn>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+      <not-bool/>
+    </arg>
+    <arg nr="2" direction="out">
+      <not-null/>
+      <not-bool/>
+    </arg>
+    <warn severity="style" reason="Obsolescent" alternatives="getpwnam"/>
+  </function>
   <!-- void timeradd(struct timeval *a, struct timeval *b, struct timeval *res);-->
   <!-- void timersub(struct timeval *a, struct timeval *b, struct timeval *res);-->
   <function name="timeradd,timersub">
diff --git a/test/cfg/gnu.c b/test/cfg/gnu.c
index 2305a1400..864c8eb07 100644
--- a/test/cfg/gnu.c
+++ b/test/cfg/gnu.c
@@ -13,11 +13,23 @@
 #include <stdio.h>
 #include <stdarg.h>
 #include <sys/time.h>
+#include <sys/types.h>
+#include <pwd.h>
 #include <sys/mman.h>
 #ifndef __CYGWIN__
 #include <sys/epoll.h>
 #endif
 
+int uninitvar_getpw(uid_t uid, char *buf)
+{
+    uid_t someUid;
+    // cppcheck-suppress getpwCalled
+    (void)getpw(uid, buf);
+    // cppcheck-suppress getpwCalled
+    // cppcheck-suppress uninitvar
+    return getpw(someUid, buf);
+}
+
 // #9323, #9331
 void syntaxError_timercmp(struct timeval t)
 {