re PR preprocessor/51303 (-Wmissing-include-dirs warnings reported as [enabled by default])

gcc/ChangeLog:

2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	PR preprocessor/51303
	* incpath.c (remove_duplicates): Use cpp_warning.

gcc/c-family/ChangeLog:

2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	PR preprocessor/51303
	* c-common.c (struct reason_option_codes_t option_codes):
	Add CPP_W_MISSING_INCLUDE_DIRS. Sort alphabetically.

gcc/testsuite/ChangeLog:

2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	PR preprocessor/51303
	* gcc.dg/cpp/Wmissingdirs.c: Test for the warning option.

From-SVN: r214201

gcc/ChangeLog

 2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>
 
+	PR preprocessor/51303
+	* incpath.c (remove_duplicates): Use cpp_warning.
+
+2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
 	PR c/60975
 	PR c/53063
 	* doc/options.texi (CPP): Document it.

gcc/c-family/ChangeLog

 2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>
 
+	PR preprocessor/51303
+	* c-common.c (struct reason_option_codes_t option_codes):
+	Add CPP_W_MISSING_INCLUDE_DIRS. Sort alphabetically.
+
+2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
 	PR c/60975
 	PR c/53063
 	* c.opt (Wvariadic-macros): Use CPP and LangEnabledBy.

gcc/c-family/c-common.c

@@ -9680,23 +9680,24 @@ struct reason_option_codes_t
 };
 
 static const struct reason_option_codes_t option_codes[] = {
-  {CPP_W_DEPRECATED,			OPT_Wdeprecated},
+  {CPP_W_BUILTIN_MACRO_REDEFINED,	OPT_Wbuiltin_macro_redefined},
   {CPP_W_COMMENTS,			OPT_Wcomment},
-  {CPP_W_TRIGRAPHS,			OPT_Wtrigraphs},
+  {CPP_W_CXX_OPERATOR_NAMES,		OPT_Wc___compat},
+  {CPP_W_DATE_TIME,			OPT_Wdate_time},
+  {CPP_W_DEPRECATED,			OPT_Wdeprecated},
+  {CPP_W_ENDIF_LABELS,			OPT_Wendif_labels},
+  {CPP_W_INVALID_PCH,			OPT_Winvalid_pch},
+  {CPP_W_LITERAL_SUFFIX,		OPT_Wliteral_suffix},
+  {CPP_W_LONG_LONG,			OPT_Wlong_long},
+  {CPP_W_MISSING_INCLUDE_DIRS,          OPT_Wmissing_include_dirs},
   {CPP_W_MULTICHAR,			OPT_Wmultichar},
+  {CPP_W_NORMALIZE,			OPT_Wnormalized_},
   {CPP_W_TRADITIONAL,			OPT_Wtraditional},
-  {CPP_W_LONG_LONG,			OPT_Wlong_long},
-  {CPP_W_ENDIF_LABELS,			OPT_Wendif_labels},
-  {CPP_W_VARIADIC_MACROS,		OPT_Wvariadic_macros},
-  {CPP_W_BUILTIN_MACRO_REDEFINED,	OPT_Wbuiltin_macro_redefined},
+  {CPP_W_TRIGRAPHS,			OPT_Wtrigraphs},
   {CPP_W_UNDEF,				OPT_Wundef},
   {CPP_W_UNUSED_MACROS,			OPT_Wunused_macros},
-  {CPP_W_CXX_OPERATOR_NAMES,		OPT_Wc___compat},
-  {CPP_W_NORMALIZE,			OPT_Wnormalized_},
-  {CPP_W_INVALID_PCH,			OPT_Winvalid_pch},
+  {CPP_W_VARIADIC_MACROS,		OPT_Wvariadic_macros},
   {CPP_W_WARNING_DIRECTIVE,		OPT_Wcpp},
-  {CPP_W_LITERAL_SUFFIX,		OPT_Wliteral_suffix},
-  {CPP_W_DATE_TIME,			OPT_Wdate_time},
   {CPP_W_NONE,				0}
 };
 

gcc/incpath.c

@@ -263,7 +263,8 @@ remove_duplicates (cpp_reader *pfile, struct cpp_dir *head,
 	      /* If -Wmissing-include-dirs is given, warn.  */
 	      cpp_options *opts = cpp_get_options (pfile);
 	      if (opts->warn_missing_include_dirs && cur->user_supplied_p)
-		cpp_errno (pfile, CPP_DL_WARNING, cur->name);
+		cpp_warning (pfile, CPP_W_MISSING_INCLUDE_DIRS, "%s: %s",
+			     cur->name, xstrerror (errno));
 	      reason = REASON_NOENT;
 	    }
 	}

gcc/testsuite/ChangeLog

 2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>
 
+	PR preprocessor/51303
+	* gcc.dg/cpp/Wmissingdirs.c: Test for the warning option.
+
+2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
 	PR c/60975
 	PR c/53063
 	* gcc.dg/cpp/Wvariadic-1p.c: New test.

gcc/testsuite/gcc.dg/cpp/Wmissingdirs.c

@@ -4,4 +4,4 @@
 /* Test that -Wmissing-include-dirs issues a warning when a specified
    directory does not exist.  Source Ben Elliston, 2004-05-13.  */
 
-/* { dg-warning "No such file or directory" "-Wmissing-include-dirs" { target *-*-* } 0 } */
+/* { dg-warning "No such file or directory.*Wmissing-include-dirs" "-Wmissing-include-dirs" { target *-*-* } 0 } */