converter tool deletes variable arguments

[hasantouma]

I noticed this issue when converting the Icecast code. In the file src/net/sock.c the function:
int sock_write(sock_t sock, const char *fmt, ...) is incorrectly converted to:
int sock_write(int sock, const char *fmt : itype(_Ptr<const char> ) )

I created a small example that highlights the issue:

Original C code var_arg.c:

#include <stdio.h>
#include <stdarg.h>

int fun(int a, ...) {
    // define type of variable
    va_list L;
    int z;

    z = 0;

    va_start(L, a);

    // Loop to adding the int values
    for (int i=0; i < a; i++) {
        z = z + va_arg(L, int);
    }

    va_end(L);

    return z;
}

int main() {
    // Define temporary variables
    int x, y, z;
    int k;

    x = 2;
    y = 3;
    z = 4;

    // calling function
    k = fun(3, x, y, z);

    // displaying message with result
    printf("Total of %d, %d, and %d is %d\n", x, y, z, k);

    return 0;
}

checked-c-convert output:
Note: I added #include <stdio_checked.h> and #include <stdchecked.h> before I ran the tool

#include <stdio_checked.h>
#include <stdarg.h>
#include <stdchecked.h>

int fun(int a) {
    // define type of variable
    va_list L;
    int z;

    z = 0;

    va_start(L, a);

    // Loop to adding the int values
    for (int i=0; i < a; i++) {
        z = z + va_arg(L, int);
    }

    va_end(L);

    return z;
}

int main() {
    // Define temporary variables
    int x, y, z;
    int k;

    x = 2;
    y = 3;
    z = 4;

    // calling function
    k = fun(3, x, y, z);

    // displaying message with result
    printf("Total of %d, %d, and %d is %d\n", x, y, z, k);

    return 0;
}

The tool deletes the variable argument in fun() causing an error when using va_start()

[dtarditi]

The convert tool has been mostly rewritten (see PR #642). Please reopen this issue if it still exists.