diff --git a/cfg/std.cfg b/cfg/std.cfg
index 441e44378..249e57ba4 100644
--- a/cfg/std.cfg
+++ b/cfg/std.cfg
@@ -1893,6 +1893,7 @@
     <arg nr="3" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int fprintf(FILE *stream, const char *format, ...); -->
@@ -1909,6 +1910,7 @@
       <formatstr/>
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int vfprintf(FILE *stream, const char *format, va_list arg); -->
@@ -1924,6 +1926,7 @@
       <not-null/>
       <not-uninit/>
       <formatstr/>
+      <strz/>
     </arg>
     <arg nr="3" direction="in"/>
   </function>
@@ -1940,6 +1943,7 @@
       <not-null/>
       <not-uninit/>
       <formatstr/>
+      <strz/>
     </arg>
     <arg nr="3" direction="in"/>
   </function>
@@ -2043,6 +2047,7 @@
     <arg nr="2" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="3" direction="inout">
       <not-null/>
@@ -2059,10 +2064,12 @@
     </arg>
     <arg nr="2" direction="in">
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="3" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="4">
       <not-null/>
@@ -2163,6 +2170,7 @@
     <arg nr="2" direction="in">
       <formatstr/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int vfscanf(FILE *stream, const char * format, va_list arg); -->
@@ -2175,6 +2183,7 @@
     </arg>
     <arg nr="2" direction="in">
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="3"/>
   </function>
@@ -2189,6 +2198,7 @@
     <arg nr="2" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="3"/>
   </function>
@@ -2316,6 +2326,7 @@
     <leak-ignore/>
     <arg nr="1" direction="in">
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="2" direction="in">
       <not-uninit/>
@@ -2391,6 +2402,7 @@
     <arg nr="2" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="3" direction="in">
       <not-uninit/>
@@ -3411,6 +3423,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="1" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- float nanf(const char *tagp); -->
@@ -3423,6 +3436,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="1" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- long double nanl(const char *tagp); -->
@@ -3435,6 +3449,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="1" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int isnan(double x); -->
@@ -4101,6 +4116,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <leak-ignore/>
     <arg nr="1" direction="in">
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- double pow(double x, double y); -->
@@ -4320,6 +4336,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="1" direction="in">
       <formatstr/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int vprintf(const char *format, va_list arg); -->
@@ -4330,6 +4347,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="1" direction="in">
       <not-uninit/>
       <formatstr/>
+      <strz/>
     </arg>
     <arg nr="2"/>
   </function>
@@ -4340,6 +4358,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <leak-ignore/>
     <arg nr="1" direction="in">
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="2"/>
   </function>
@@ -4667,6 +4686,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
       <formatstr/>
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int vsscanf(const char *s, const char *format, va_list arg); -->
@@ -4677,10 +4697,12 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="1" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="2" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="3"/>
   </function>
@@ -4707,6 +4729,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="1" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="2"/>
   </function>
@@ -4717,6 +4740,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <leak-ignore/>
     <arg nr="1" direction="in">
       <not-null/>
+      <strz/>
     </arg>
     <arg nr="2"/>
   </function>
@@ -4921,6 +4945,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
       <not-null/>
       <not-uninit/>
       <formatstr/>
+      <strz/>
     </arg>
     <arg nr="4" direction="in">
       <not-null/>
@@ -4954,6 +4979,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="2" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="3" direction="in">
       <not-uninit/>
@@ -4979,6 +5005,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
       <not-null/>
       <not-uninit/>
       <minsize type="argvalue" arg="4"/>
+      <strz/>
     </arg>
     <arg nr="4" direction="in">
       <not-uninit/>
@@ -4998,6 +5025,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="2" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- char * strncat(char *ct, const char *s, size_t n); -->
@@ -5015,6 +5043,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="2" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="3" direction="in">
       <not-uninit/>
@@ -5041,6 +5070,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="3" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- errno_t strncat_s(char *restrict dest, rsize_t destsz, const char *restrict src, rsize_t count); // since C11 -->
@@ -5061,6 +5091,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
       <not-null/>
       <not-uninit/>
       <minsize type="argvalue" arg="4"/>
+      <strz/>
     </arg>
     <arg nr="4" direction="in">
       <not-uninit/>
@@ -5292,10 +5323,12 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="1" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="2" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- size_t wcscspn(const wchar_t *cs, const wchar_t *ct); -->
@@ -5357,10 +5390,12 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="1" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
     <arg nr="2" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int wcscoll(const wchar_t *s1, const wchar_t *s2); -->
@@ -5441,6 +5476,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="2" direction="in">
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- float strtof(const char *s, char **endp); -->
@@ -6053,6 +6089,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
       <formatstr/>
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int sprintf_s(char *restrict buffer, rsize_t bufsz, const char *restrict format, ...); // since C11 // TODO: conflicts with the Windows functions where it is overloaded for C++ also -->
@@ -6108,6 +6145,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
       <not-null/>
       <not-uninit/>
       <formatstr/>
+      <strz/>
     </arg>
     <arg nr="3"/>
   </function>
@@ -6164,6 +6202,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
       <formatstr/>
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int vsnprintf(char *s, size_t n, const char *format, va_list arg); -->
@@ -6183,6 +6222,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
       <not-null/>
       <not-uninit/>
       <formatstr/>
+      <strz/>
     </arg>
     <arg nr="4"/>
   </function>
@@ -6205,12 +6245,14 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <leak-ignore/>
     <arg nr="1" direction="in">
       <not-uninit/>
+      <strz/>
     </arg>
     <formatstr scan="true"/>
     <arg nr="2" direction="in">
       <formatstr/>
       <not-null/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int fwscanf(FILE* stream, const wchar_t* format, ...); -->
@@ -6225,6 +6267,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="2" direction="in">
       <formatstr/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int swscanf(const wchar_t *string, const wchar_t *format, ...); -->
@@ -6234,11 +6277,13 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <leak-ignore/>
     <arg nr="1" direction="in">
       <not-uninit/>
+      <strz/>
     </arg>
     <formatstr scan="true"/>
     <arg nr="2" direction="in">
       <formatstr/>
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- int system(const char *command); -->
@@ -6249,6 +6294,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="1" direction="in">
       <!-- If a null pointer is given, command processor is checked for existence -->
       <not-uninit/>
+      <strz/>
     </arg>
   </function>
   <!-- /*unspecified*/ setw(int n); -->
@@ -8093,6 +8139,7 @@ initializer list (7) string& replace (const_iterator i1, const_iterator i2, init
       <not-null/>
       <not-uninit/>
       <not-bool/>
+      <strz/>
     </arg>
   </function>  
   <!-- int mtx_init( mtx_t* mutex, int type ); // since C11 -->
diff --git a/test/cfg/std.cpp b/test/cfg/std.cpp
index 927c865c3..88263c671 100644
--- a/test/cfg/std.cpp
+++ b/test/cfg/std.cpp
@@ -36,6 +36,14 @@
 #include <iterator>
 #include <vector>
 
+void invalidFunctionArgStr_fprintf(FILE *stream, const char *format)
+{
+    const char formatBuf[] = {'%','d'};
+    // cppcheck-suppress invalidFunctionArgStr
+    (void)fprintf(stream,formatBuf,42);
+    (void)fprintf(stream,format,42);
+}
+
 void invalidFunctionArgStr_fopen(const char * const fileName, const char * const mode)
 {
     const char fileNameBuf[] = {'f','i','l','e'};