File: main2.cpp

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llvm-toolchain-19 1%3A19.1.7-3~deb12u1
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#include <stdio.h>
#include <stdlib.h>

int a(int);
int b(int);
int c(int);

int a(int val)
{
    if (val <= 1)
        return b(val);
    else if (val >= 3)
        return c(val);

    return val;
}

int b(int val)
{
    int rc = c(val);
    void *ptr = malloc(1024); // thread step-out of malloc into function b.
    if (!ptr)
        return -1;
    else
        printf("ptr=%p\n", ptr);
    return rc;                // we should reach here after 3 step-over's.
}

int c(int val)
{
    return val + 3;
}

int main (int argc, char const *argv[])
{
    int A1 = a(1);
    printf("a(1) returns %d\n", A1);
    
    int B2 = b(2);
    printf("b(2) returns %d\n", B2);
    
    int A3 = a(3);
    printf("a(3) returns %d\n", A3);
    
    return 0;
}