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#include "stdio.h"
#include "limits.h"
 
typedef struct TempStruct TempStruct;
 
struct TempStruct
{
    int a;
    TempStruct *next;
};
 
int function1(TempStruct *param)
{
    return param == NULL;
}
 
int function2(TempStruct **param)
{
    if(function1(param))
    {
        return INT_MIN;
    }
    *param = (*param)->next;
    return 0;
}
 
int main()
{
    TempStruct *tempStructObj = NULL;
    function2(&tempStructObj);
    printf("Does not reach here!!!");
    return 0;
}

prog.c: In function 'function2':
prog.c:19:18: error: passing argument 1 of 'function1' from incompatible pointer type [-Werror=incompatible-pointer-types]
     if(function1(param))
                  ^
prog.c:12:5: note: expected 'TempStruct * {aka struct TempStruct *}' but argument is of type 'TempStruct ** {aka struct TempStruct **}'
 int function1(TempStruct *param)
     ^
cc1: all warnings being treated as errors

Standard output is empty