c-decl.c (store_parm_decls_oldstyle): Let diagnostic machinery decide if the warning will be printed.

* c-decl.c (store_parm_decls_oldstyle): Let diagnostic machinery
decide if the warning will be printed.
* calls.c (expand_call): Likewise.
* function.c (init-function_start): Likewise.

* common.opt (-fdiagnostics-show-option): New.
* opts.c (option_enabled): Accept the option index instead of a
pointer to the option descriptor.
* opts.h (option_enabled): Likewise.
* toplev.c (print_switch_values): Pass option index, not option
descriptor.
* diagnostic.h (diagnostic_info): Add option_index.
* diagnostic.c: Include opts.h.
(diagnostic_set_info): Initialize option_index.
(diagnostic_report_diagnostic): Amend option name if appropriate.
(warning): Check to see if the specified warning is enabled.
Store option index.
* doc/invoke.texi (-fdiagnostics-show-options): Document.

From-SVN: r99169

1 files changed, 2 insertions, 1 deletions

diff --git a/gcc/opts.c b/gcc/opts.c
index 5c09450..4311f4c 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -1400,8 +1400,9 @@ wrap_help (const char *help, const char *item, unsigned int item_width)
    a simple on-off switch.  */
 
 int
-option_enabled (const struct cl_option *option)
+option_enabled (int opt_idx)
 {
+  const struct cl_option *option = &(cl_options[opt_idx]);
   if (option->flag_var)
     switch (option->var_cond)
       {