[LTP] [PATCH v1 3/3] syscalls/mallinfo03: Add an overflow test when setting 2G size

[Yang Xu <xuyang2018.jy@cn.fujitsu.com>]

Hi Li
> Hi Xu,
>
>     +void test_mallinfo(void)
>     +{
>     + struct mallinfo info;
>     + char *buf;
>     + size_t size = 2UL * 1024UL * 1024UL * 1024UL;
>     +
>     + buf = SAFE_MALLOC(size);
>     + info = mallinfo();
>     + if (info.hblkhd < 0) {
>     + print_mallinfo("Test malloc 2G", &info);
>     + tst_res(TFAIL, "The member of struct mallinfo overflow, we should
>     use mallinfo2");
>
> TPASS?
>
>     + } else {
>     + /*We will never get here*/
>     + tst_res(TPASS, "The member of struct mallinfo doesn't overflow");
>
>
> TFAIL?
>
>     + }
>     + free(buf);
>     +}

It is a "always" fail test.  We should use mallinfo2 in the future. I 
guess failure may attract user's attention than pass.

>
>
>
> --
> Regards,
> Li Wang