SPV, push_back() , push_front

test.c

#include "spv.h"

void main(){
    SPV test;
    SPVconstruct(3,&test);      //this shows  3 garbage values
    //SPVconstruct(0,&test);    //this works fine


    int i;
    for(i=0;i<3;i++){
        SPVpush_back(&test,999);
        //SPVpush_front(&test,999);
    }
    SPVprint(&test);        //prints some garbage values
}

Output: 3941640 3936056 1684234849 999 999 999
when SPVconstruct(3,&test);

Output: 999 999 999
when SPVconstruct(0,&test);

Works fine when:
SPVconstruct(0,&test);
SPVinsert() is used

But getting garbage when
SPVconstruct(any_size,&test);
SPVinsert() is used

Number of garbage values is varying according to the size passed in SFVconstruct()

Found problem and fixed, my compiler GCC zero initializes malloc by default, but your compiler MingW does not. Now I've updated it to manually zero initialize by default and added another Constructor without zero initialization.

Check it now and let me know.
Added zero initialization and a simple optimization in case compiler already did it.

Thanks a lot for finding this bug.

It is working fine
Zero padded