Re: [PATCH v5 3/4] test-strcmp-offset: created test for strcmp_offset

> diff --git a/t/helper/test-strcmp-offset.c b/t/helper/test-strcmp-offset.c
> new file mode 100644
> index 0000000..fe01318
> --- /dev/null
> +++ b/t/helper/test-strcmp-offset.c
> @@ -0,0 +1,64 @@
> +#include "cache.h"
> +
> +struct test_data {
> +	const char *s1;
> +	const char *s2;
> +	int first_change;
> +};
> +
> +static struct test_data data[] = {
> +	{ "abc", "abc", 0 },
> +	{ "abc", "def", 0 },
> +
> +	{ "abc", "abz", 2 },
> +
> +	{ "abc", "abcdef", 3 },
> +
> +	{ "abc\xF0zzz", "abc\xFFzzz", 3 },
> +
> +	{ NULL, NULL, 0 }
> +};
> +
> +int try_pair(const char *sa, const char *sb, int first_change)

> +{
> +	int failed = 0;
> +	int offset, r_exp, r_tst;
> +	int r_exp_sign, r_tst_sign;
> +
> +	/*
> +	 * Because differnt CRTs behave differently, only rely on signs