cppinit.c (COMMAND_LINE_OPTIONS): Give all relevant -W options their own entries.

	* cppinit.c (COMMAND_LINE_OPTIONS): Give all relevant -W
	options their own entries.
	(parse_option): Clarify comment.
	(cpp_handle_option): Remove 'ignore' parameter and OPT_W
	special case.  Replace if/strcmp chain for -W options with
	use of new OPT_* entries for them.
	(cpp_handle_options): Update to match.
	* cpplib.h: Remove last parameter to cpp_handle_option from prototype.
	* c-decl.c, cp/decl2.c: Update call to cpp_handle_option.

From-SVN: r54352

1 files changed, 85 insertions, 59 deletions

diff --git a/gcc/cppinit.c b/gcc/cppinit.c
index 9d6a105852a..1bb323f9988 100644
--- a/gcc/cppinit.c
+++ b/gcc/cppinit.c
@@ -1152,7 +1152,25 @@ new_pending_directive (pend, text, handler)
   DEF_OPT("MT",                       no_tgt, OPT_MT)                         \
   DEF_OPT("P",                        0,      OPT_P)                          \
   DEF_OPT("U",                        no_mac, OPT_U)                          \
-  DEF_OPT("W",                        no_arg, OPT_W)  /* arg optional */      \
+  DEF_OPT("Wall",                     0,      OPT_Wall)                       \
+  DEF_OPT("Wcomment",                 0,      OPT_Wcomment)                   \
+  DEF_OPT("Wcomments",                0,      OPT_Wcomments)                  \
+  DEF_OPT("Wendif-labels",            0,      OPT_Wendif_labels)              \
+  DEF_OPT("Werror",                   0,      OPT_Werror)                     \
+  DEF_OPT("Wimport",                  0,      OPT_Wimport)                    \
+  DEF_OPT("Wno-comment",              0,      OPT_Wno_comment)                \
+  DEF_OPT("Wno-comments",             0,      OPT_Wno_comments)               \
+  DEF_OPT("Wno-endif-labels",         0,      OPT_Wno_endif_labels)           \
+  DEF_OPT("Wno-error",                0,      OPT_Wno_error)                  \
+  DEF_OPT("Wno-import",               0,      OPT_Wno_import)                 \
+  DEF_OPT("Wno-system-headers",       0,      OPT_Wno_system_headers)         \
+  DEF_OPT("Wno-traditional",          0,      OPT_Wno_traditional)            \
+  DEF_OPT("Wno-trigraphs",            0,      OPT_Wno_trigraphs)              \
+  DEF_OPT("Wno-undef",                0,      OPT_Wno_undef)                  \
+  DEF_OPT("Wsystem-headers",          0,      OPT_Wsystem_headers)            \
+  DEF_OPT("Wtraditional",             0,      OPT_Wtraditional)               \
+  DEF_OPT("Wtrigraphs",               0,      OPT_Wtrigraphs)                 \
+  DEF_OPT("Wundef",                   0,      OPT_Wundef)                     \
   DEF_OPT("d",                        no_arg, OPT_d)                          \
   DEF_OPT("fno-operator-names",       0,      OPT_fno_operator_names)         \
   DEF_OPT("fno-preprocessed",         0,      OPT_fno_preprocessed)           \
@@ -1228,10 +1246,7 @@ static const struct cl_option cl_options[] =
    command-line matches.  Returns its index in the option array,
    negative on failure.  Complications arise since some options can be
    suffixed with an argument, and multiple complete matches can occur,
-   e.g. -iwithprefix and -iwithprefixbefore.  Moreover, we need to
-   accept options beginning with -W that we do not recognise, but not
-   to swallow any subsequent command line argument; this is handled as
-   special cases in cpp_handle_option.  */
+   e.g. -pedantic and -pedantic-errors.  */
 static int
 parse_option (input)
      const char *input;
@@ -1290,14 +1305,12 @@ parse_option (input)
 
 /* Handle one command-line option in (argc, argv).
    Can be called multiple times, to handle multiple sets of options.
-   If ignore is non-zero, this will ignore unrecognized -W* options.
    Returns number of strings consumed.  */
 int
-cpp_handle_option (pfile, argc, argv, ignore)
+cpp_handle_option (pfile, argc, argv)
      cpp_reader *pfile;
      int argc;
      char **argv;
-     int ignore;
 {
   int i = 0;
   struct cpp_pending *pend = CPP_OPTION (pfile, pending);
@@ -1329,11 +1342,7 @@ cpp_handle_option (pfile, argc, argv, ignore)
       if (cl_options[opt_index].msg)
 	{
 	  arg = &argv[i][cl_options[opt_index].opt_len + 1];
-
-	  /* Yuk. Special case for -W as it must not swallow
-	     up any following argument.  If this becomes common, add
-	     another field to the cl_options table.  */
-	  if (arg[0] == '\0' && opt_code != OPT_W)
+	  if (arg[0] == '\0')
 	    {
 	      arg = argv[++i];
 	      if (!arg)
@@ -1665,51 +1674,68 @@ cpp_handle_option (pfile, argc, argv, ignore)
 	  /* Add directory to end of path for includes.  */
 	  append_include_chain (pfile, xstrdup (arg), AFTER, 0);
 	  break;
-	case OPT_W:
-	  /* Silently ignore unrecognised options.  */
-	  if (!strcmp (argv[i], "-Wall"))
-	    {
-	      CPP_OPTION (pfile, warn_trigraphs) = 1;
-	      CPP_OPTION (pfile, warn_comments) = 1;
-	    }
-	  else if (!strcmp (argv[i], "-Wtraditional"))
-	    CPP_OPTION (pfile, warn_traditional) = 1;
-	  else if (!strcmp (argv[i], "-Wtrigraphs"))
-	    CPP_OPTION (pfile, warn_trigraphs) = 1;
-	  else if (!strcmp (argv[i], "-Wcomment"))
-	    CPP_OPTION (pfile, warn_comments) = 1;
-	  else if (!strcmp (argv[i], "-Wcomments"))
-	    CPP_OPTION (pfile, warn_comments) = 1;
-	  else if (!strcmp (argv[i], "-Wundef"))
-	    CPP_OPTION (pfile, warn_undef) = 1;
-	  else if (!strcmp (argv[i], "-Wimport"))
-	    CPP_OPTION (pfile, warn_import) = 1;
-	  else if (!strcmp (argv[i], "-Werror"))
-	    CPP_OPTION (pfile, warnings_are_errors) = 1;
-	  else if (!strcmp (argv[i], "-Wsystem-headers"))
-	    CPP_OPTION (pfile, warn_system_headers) = 1;
-	  else if (!strcmp (argv[i], "-Wendif-labels"))
-	    CPP_OPTION (pfile, warn_endif_labels) = 1;
-	  else if (!strcmp (argv[i], "-Wno-traditional"))
-	    CPP_OPTION (pfile, warn_traditional) = 0;
-	  else if (!strcmp (argv[i], "-Wno-trigraphs"))
-	    CPP_OPTION (pfile, warn_trigraphs) = 0;
-	  else if (!strcmp (argv[i], "-Wno-comment"))
-	    CPP_OPTION (pfile, warn_comments) = 0;
-	  else if (!strcmp (argv[i], "-Wno-comments"))
-	    CPP_OPTION (pfile, warn_comments) = 0;
-	  else if (!strcmp (argv[i], "-Wno-undef"))
-	    CPP_OPTION (pfile, warn_undef) = 0;
-	  else if (!strcmp (argv[i], "-Wno-import"))
-	    CPP_OPTION (pfile, warn_import) = 0;
-	  else if (!strcmp (argv[i], "-Wno-error"))
-	    CPP_OPTION (pfile, warnings_are_errors) = 0;
-	  else if (!strcmp (argv[i], "-Wno-system-headers"))
-	    CPP_OPTION (pfile, warn_system_headers) = 0;
-	  else if (!strcmp (argv[i], "-Wno-endif-labels"))
-	    CPP_OPTION (pfile, warn_endif_labels) = 0;
-	  else if (! ignore)
-	    return i;
+
+	case OPT_Wall:
+	  CPP_OPTION (pfile, warn_trigraphs) = 1;
+	  CPP_OPTION (pfile, warn_comments) = 1;
+	  break;
+
+	case OPT_Wtraditional:
+	  CPP_OPTION (pfile, warn_traditional) = 1;
+	  break;
+	case OPT_Wno_traditional:
+	  CPP_OPTION (pfile, warn_traditional) = 0;
+	  break;
+
+	case OPT_Wtrigraphs:
+	  CPP_OPTION (pfile, warn_trigraphs) = 1;
+	  break;
+	case OPT_Wno_trigraphs:
+	  CPP_OPTION (pfile, warn_trigraphs) = 0;
+	  break;
+
+	case OPT_Wcomment:
+	case OPT_Wcomments:
+	  CPP_OPTION (pfile, warn_comments) = 1;
+	  break;
+	case OPT_Wno_comment:
+	case OPT_Wno_comments:
+	  CPP_OPTION (pfile, warn_comments) = 0;
+	  break;
+
+	case OPT_Wundef:
+	  CPP_OPTION (pfile, warn_undef) = 1;
+	  break;
+	case OPT_Wno_undef:
+	  CPP_OPTION (pfile, warn_undef) = 0;
+	  break;
+
+	case OPT_Wimport:
+	  CPP_OPTION (pfile, warn_import) = 1;
+	  break;
+	case OPT_Wno_import:
+	  CPP_OPTION (pfile, warn_import) = 0;
+	  break;
+
+	case OPT_Wendif_labels:
+	  CPP_OPTION (pfile, warn_endif_labels) = 1;
+	  break;
+	case OPT_Wno_endif_labels:
+	  CPP_OPTION (pfile, warn_endif_labels) = 0;
+	  break;
+
+	case OPT_Werror:
+	  CPP_OPTION (pfile, warnings_are_errors) = 1;
+	  break;
+	case OPT_Wno_error:
+	  CPP_OPTION (pfile, warnings_are_errors) = 0;
+	  break;
+
+	case OPT_Wsystem_headers:
+	  CPP_OPTION (pfile, warn_system_headers) = 1;
+	  break;
+	case OPT_Wno_system_headers:
+	  CPP_OPTION (pfile, warn_system_headers) = 0;
 	  break;
 	}
     }
@@ -1731,7 +1757,7 @@ cpp_handle_options (pfile, argc, argv)
 
   for (i = 0; i < argc; i += strings_processed)
     {
-      strings_processed = cpp_handle_option (pfile, argc - i, argv + i, 1);
+      strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
       if (strings_processed == 0)
 	break;
     }