std.cfg: Improved configuration of qsort().

cfg/std.cfg

@@ -4340,6 +4340,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="1" direction="inout">
       <not-null/>
       <not-uninit/>
+      <minsize type="argvalue" arg="2"/>
     </arg>
     <arg nr="2" direction="in">
       <not-uninit/>
@@ -4352,6 +4353,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <arg nr="4" direction="in">
       <not-null/>
       <not-uninit/>
+      <not-bool/>
     </arg>
   </function>
   <!-- int putc(int c, FILE *stream); -->

test/cfg/std.c

@@ -26,6 +26,19 @@
 #include <inttypes.h>
 #include <float.h>
 
+
+int qsort_cmpfunc (const void * a, const void * b) {
+    return (*(int*)a - *(int*)b);
+}
+void nullPointer_qsort(void *base, size_t n, size_t size, int (*cmp)(const void *, const void *))
+{
+    // cppcheck-suppress nullPointer
+    qsort(NULL, n, size, qsort_cmpfunc);
+    // cppcheck-suppress nullPointer
+    qsort(base, n, size, NULL);
+    qsort(base, n, size, qsort_cmpfunc);
+}
+
 // As with all bounds-checked functions, localtime_s is only guaranteed to be available if __STDC_LIB_EXT1__ is defined by the implementation and if the user defines __STDC_WANT_LIB_EXT1__ to the integer constant 1 before including time.h.
 #ifdef __STDC_LIB_EXT1__
 void uninitvar_localtime_s(const time_t *restrict time, struct tm *restrict result)

test/cfg/std.cpp

@@ -32,6 +32,18 @@
 #include <iterator>
 #include <vector>
 
+int qsort_cmpfunc (const void * a, const void * b) {
+    return (*static_cast<const int*>(a) - *static_cast<const int*>(b));
+}
+void nullPointer_qsort(void *base, std::size_t n, std::size_t size, int (*cmp)(const void *, const void *))
+{
+    // cppcheck-suppress nullPointer
+    std::qsort(nullptr, n, size, qsort_cmpfunc);
+    // cppcheck-suppress nullPointer
+    std::qsort(base, n, size, nullptr);
+    std::qsort(base, n, size, qsort_cmpfunc);
+}
+
 void *bufferAccessOutOfBounds_memchr(void *s, int c, size_t n)
 {
     char buf[42]={0};