This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Sanity check for switch array
Joseph S. Myers wrote:-
> A --enable-checking test at startup that the array _is_ sorted would be a
> good idea.
I've applied this.
Neil.
* c-opts.c (c_common_init_options): Check option array is
sorted if checking enabled.
Index: c-opts.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/c-opts.c,v
retrieving revision 1.9
diff -u -p -r1.9 c-opts.c
--- c-opts.c 12 Aug 2002 22:44:29 -0000 1.9
+++ c-opts.c 13 Aug 2002 06:47:47 -0000
@@ -495,6 +495,14 @@ c_common_init_options (lang)
runtime. */
qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
#endif
+#if ENABLE_CHECKING
+ size_t i;
+
+ for (i = 1; i < N_OPTS; i++)
+ if (strcmp (cl_options[i - 1].opt_text, cl_options[i].opt_text) >= 0)
+ error ("options array incorrectly sorted: %s is before %s",
+ cl_options[i - 1].opt_text, cl_options[i].opt_text);
+#endif
c_language = lang;
parse_in = cpp_create_reader (lang == clk_c ? CLK_GNUC89 : CLK_GNUCXX);