#include <stdint.h>
#include <memory.h>

extern char buffer[];

extern void getstr1(char *buff, int buflen);
extern void getstr2(char **s);
extern void dosomething(char *s);

void myfn()
{
    char *s, *s1;
    int len;
    
    getstr1(buffer, 128);
    getstr2(&s);

    len = *s + *buffer;
    memcpy(buffer + *buffer + 1, s + 1, (*s) * sizeof(char));
    *buffer = len;
    
    dosomething(buffer);
}

_s$ = -4                                                ; size = 4
void myfn(void) PROC                                 ; myfn, COMDAT
        push    ecx
        push    128                           ; 00000080H
        push    OFFSET char * buffer             ; buffer
        call    void getstr1(char *,int)           ; getstr1
        lea     eax, DWORD PTR _s$[esp+12]
        push    eax
        call    void getstr2(char * *)                    ; getstr2
        mov     eax, DWORD PTR _s$[esp+16]
        push    OFFSET char * buffer             ; buffer
        mov     al, BYTE PTR [eax]
        add     BYTE PTR char * buffer, al
        call    void dosomething(char *)              ; dosomething
        add     esp, 20                             ; 00000014H
        ret     0
void myfn(void) ENDP                                 ; myfn