[LTP] [PATCH v5 1/2] ptrace05: Refactor the test using new LTP API

[Cyril Hrubis]

Hi!
> +static void print_dbg_sig(int signum)
>  {
> -	fprintf(stderr, "usage: %s [start-signum] [end-signum]\n", argv0);
> -	return 1;
> +	char const *strsig = tst_strsig(signum);
> +
> +	if (strstr(strsig, "???"))
> +		tst_res(TDEBUG, "[child] Sending kill(.., %d)", signum);
> +	else
> +		tst_res(TDEBUG, "[child] Sending kill(.., %s)", strsig);
>  }

This works around the library defficiencies. I would rather see patch
that changes the tst_strsig() return the number if we do not have a
match.

This should work:

diff --git a/lib/tests/tst_strsig.c b/lib/tests/tst_strsig.c
index 9a5ca80aa..ed5be3f00 100644
--- a/lib/tests/tst_strsig.c
+++ b/lib/tests/tst_strsig.c
@@ -29,6 +29,7 @@ int TST_TOTAL = 1;

 int main(void)
 {
+       fprintf(stderr, "0 = %s\n", tst_strsig(0));
        fprintf(stderr, "SIGKILL = %s\n", tst_strsig(SIGKILL));
        fprintf(stderr, "SIGALRM = %s\n", tst_strsig(SIGALRM));
        return 0;
diff --git a/lib/tst_res.c b/lib/tst_res.c
index 7c66d2f6c..90403bc67 100644
--- a/lib/tst_res.c
+++ b/lib/tst_res.c
@@ -141,11 +141,14 @@ struct pair {
 #define PAIR(def) [def] = {.name = #def, .val = def},
 #define STRPAIR(key, value) [key] = {.name = value, .val = key},

-#define PAIR_LOOKUP(pair_arr, idx) do {                       \
-       if (idx < 0 || (size_t)idx >= ARRAY_SIZE(pair_arr) || \
-           pair_arr[idx].name == NULL)                       \
-               return "???";                                 \
-       return pair_arr[idx].name;                            \
+#define PAIR_LOOKUP(pair_arr, idx) do {                                    \
+       static char par_str_buf__[16];                                     \
+       if (idx < 0 || (size_t)idx >= ARRAY_SIZE(pair_arr) ||              \
+           pair_arr[idx].name == NULL) {                                  \
+               snprintf(par_str_buf__, sizeof(par_str_buf__), "%i", idx); \
+               return par_str_buf__;                                      \
+       }                                                                  \
+       return pair_arr[idx].name;                                         \
 } while (0)

-- 
Cyril Hrubis
chrubis@suse.cz