False positive: danglingLifetime, double pointer

[Geongu.Park]

I write this code and run the cppcheck.

#include <stdio.h>
#include <stdlib.h>

static int sink;

void foo()
{
    int **pp = NULL;
    int *p = NULL;
    int a = 20;
    int ret;
    p = &a;
    pp = &p;
    ret = **pp; /*Tool should not detect this line as error*/ /*No ERROR:Uninitialized pointer*/
    sink = ret;
}

int main()
{
    foo();
    return 0;
}

And I get the danglingLifetime error. I think this case is not error. What do you think?

Checking E:\test2\test2\test.cpp ...
E:\test2\test2\test.cpp:15:2: error: Non-local variable 'sink' will use object that points to local variable 'a'. [danglingLifetime]
sink = ret;
^
E:\test2\test2\test.cpp:12:6: note: Address of variable taken here.
p = &a;
^
E:\test2\test2\test.cpp:10:6: note: Variable created here.
int a = 20;
^
E:\test2\test2\test.cpp:15:2: note: Non-local variable 'sink' will use object that points to local variable 'a'.
sink = ret;
^

[CHR]

Thanks for the report, I have created a ticket here: https://trac.cppcheck.net/ticket/10406