re PR driver/28528 (C language extensions override -x in C++ driver)

	PR driver/28528
	* g++spec.c (lang_specific_driver): Always check if we need to
	swallow a space-separated  arg to '-x'.
	* lang-specs.h: Don't create ouput files for '-xc++-header'
	if -fsyntax-only.

From-SVN: r116392

gcc/cp/ChangeLog

+2006-08-24  Danny Smith   <dannysmith@users.sourceforge.net>
+
+	PR driver/28528
+	* g++spec.c (lang_specific_driver): Always check if we need to
+	swallow a space-separated  arg to '-x'.
+	* lang-specs.h: Don't create ouput files for '-xc++-header'
+	if -fsyntax-only.
+
 2006-08-23  Jason Merrill  <jason@redhat.com>
 
 	PR c++/27714

gcc/cp/g++spec.c

@@ -149,19 +149,19 @@ lang_specific_driver (int *in_argc, const char *const **in_argv,
 	    saw_verbose_flag = 1;
 	  else if (strncmp (argv[i], "-x", 2) == 0)
 	    {
-	      if (library == 0)
-		{
-		  const char * arg;
-		  if (argv[i][2] != '\0')
-		    arg = argv[i]+2;
-		  else if (argv[i+1] != NULL)
-		    arg = argv[i+1];
-		  else  /* Error condition, message will be printed later.  */
-		    arg = "";
-		  if (strcmp (arg, "c++") == 0
-		      || strcmp (arg, "c++-cpp-output") == 0)
-		    library = 1;
-		}
+	      const char * arg;
+	      if (argv[i][2] != '\0')
+		arg = argv[i]+2;
+	      else if ((argv[i+1]) != NULL)
+		/* We need to swallow arg on next loop.  */
+		quote = arg = argv[i+1];
+  	      else  /* Error condition, message will be printed later.  */
+		arg = "";
+	      if (library == 0
+		  && (strcmp (arg, "c++") == 0
+		      || strcmp (arg, "c++-cpp-output") == 0))
+		library = 1;
+		
 	      saw_speclang = 1;
 	    }
 	  /* Arguments that go directly to the linker might be .o files,

gcc/cp/lang-specs.h

@@ -43,7 +43,7 @@ Boston, MA 02110-1301, USA.  */
       cc1plus %{save-temps|no-integrated-cpp:-fpreprocessed %{save-temps:%b.ii} %{!save-temps:%g.ii}}\
 	      %{!save-temps:%{!no-integrated-cpp:%(cpp_unique_options)}}\
 	%(cc1_options) %2 %{+e1*}\
-	-o %g.s %{!o*:--output-pch=%i.gch} %W{o*:--output-pch=%*}%V}}}",
+	%{!fsyntax-only:-o %g.s %{!o*:--output-pch=%i.gch} %W{o*:--output-pch=%*}%V}}}}",
      CPLUSPLUS_CPP_SPEC, 0, 0},
   {"@c++",
     "%{E|M|MM:cc1plus -E %(cpp_options) %2 %(cpp_debug_options)}\