opt: fix gcc -O3 warnings.

[ccan] / ccan / opt / test / utils.c

diff --git a/ccan/opt/test/utils.c b/ccan/opt/test/utils.c
index a012d40b8e5958456a415f414a78b6514228c357..802b15381042b0dc63a26f440e54bb8c0f2b7f0c 100644 (file)
--- a/ccan/opt/test/utils.c
+++ b/ccan/opt/test/utils.c
@@ -35,7 +35,9 @@ static void save_err_output(const char *fmt, ...)
        char *p;
 
        va_start(ap, fmt);
-       vasprintf(&p, fmt, ap);
+       /* Check return, for fascist gcc */
+       if (vasprintf(&p, fmt, ap) == -1)
+               p = NULL;
        va_end(ap);
 
        if (err_output) {
@@ -70,33 +72,33 @@ bool parse_args(int *argc, char ***argv, ...)
 
 struct opt_table short_table[] = {
        /* Short opts, different args. */
-       { OPT_WITHOUT_ARG(NULL, 'a', test_noarg, "a"), "Description of a" },
-       { OPT_WITH_ARG(NULL, 'b', test_arg, show_arg, "b"), "Description of b" },
+       OPT_WITHOUT_ARG("-a", test_noarg, "a", "Description of a"),
+       OPT_WITH_ARG("-b", test_arg, show_arg, "b", "Description of b"),
        OPT_ENDTABLE
 };
 
 struct opt_table long_table[] = {
        /* Long opts, different args. */
-       { OPT_WITHOUT_ARG("ddd", 0, test_noarg, "ddd"), "Description of ddd" },
-       { OPT_WITH_ARG("eee", 0, test_arg, show_arg, "eee"), },
+       OPT_WITHOUT_ARG("--ddd", test_noarg, "ddd", "Description of ddd"),
+       OPT_WITH_ARG("--eee <filename>", test_arg, show_arg, "eee", ""),
        OPT_ENDTABLE
 };
 
 struct opt_table long_and_short_table[] = {
        /* Short and long, different args. */
-       { OPT_WITHOUT_ARG("ggg", 'g', test_noarg, "ggg"),
-         "Description of ggg" },
-       { OPT_WITH_ARG("hhh", 'h', test_arg, NULL, "hhh"),
-         "Description of hhh"},
+       OPT_WITHOUT_ARG("--ggg|-g", test_noarg, "ggg", "Description of ggg"),
+       OPT_WITH_ARG("-h|--hhh", test_arg, NULL, "hhh", "Description of hhh"),
        OPT_ENDTABLE
 };
 
 /* Sub-table test. */
 struct opt_table subtables[] = {
-       /* Short and long, no description */
-       { OPT_WITH_ARG("jjj", 'j', test_arg, show_arg, "jjj") },
+       /* Two short, and two long long, no description */
+       OPT_WITH_ARG("--jjj|-j|--lll|-l", test_arg, show_arg, "jjj", ""),
+       /* Hidden option */
+       OPT_WITH_ARG("--mmm|-m", test_arg, show_arg, "mmm", opt_hidden),
        OPT_SUBTABLE(short_table, NULL),
        OPT_SUBTABLE(long_table, "long table options"),
-       OPT_SUBTABLE(long_and_short_table, opt_table_hidden),
+       OPT_SUBTABLE(long_and_short_table, NULL),
        OPT_ENDTABLE
 };