gcc.c (execute): If a subprocess gets a fatal signal...

	* gcc.c (execute): If a subprocess gets a fatal signal, report
	strsignal() of the signal number, and ask for a bug report.
	Do not do this for SIGPIPE if there's already been an error.

	* tradcpp.c: Don't include signal.h.  Don't catch SIGPIPE.
	Delete pipe_closed.

From-SVN: r35006

gcc/gcc.c

@@ -2653,22 +2653,35 @@ execute ()
 	  if (commands[j].pid == pid)
 	    {
 	      i++;
-	      if (status != 0)
+	      if (WIFSIGNALED (status))
 		{
-		  if (WIFSIGNALED (status))
-		    {
-		      fatal ("Internal compiler error: program %s got fatal signal %d",
-			     commands[j].prog, WTERMSIG (status));
-		      signal_count++;
-		      ret_code = -1;
-		    }
-		  else if (WIFEXITED (status)
-			   && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
-		    {
-		      if (WEXITSTATUS (status) > greatest_status)
-			greatest_status = WEXITSTATUS (status);
-		      ret_code = -1;
-		    }
+#ifdef SIGPIPE
+		  /* SIGPIPE is a special case.  It happens in -pipe mode
+		     when the compiler dies before the preprocessor is
+		     done, or the assembler dies before the compiler is
+		     done.  There's generally been an error already, and
+		     this is just fallout.  So don't generate another error
+		     unless we would otherwise have succeeded.  */
+		  if (WTERMSIG (status) == SIGPIPE
+		      && (signal_count || greatest_status >= MIN_FATAL_STATUS))
+		    ;
+		  else
+#endif
+		    fatal ("\
+Internal error: %s (program %s)\n\
+Please submit a full bug report.\n\
+See %s for instructions.",
+			   strsignal (WTERMSIG (status)), commands[j].prog,
+			   GCCBUGURL);
+		  signal_count++;
+		  ret_code = -1;
+		}
+	      else if (WIFEXITED (status)
+		       && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
+		{
+		  if (WEXITSTATUS (status) > greatest_status)
+		    greatest_status = WEXITSTATUS (status);
+		  ret_code = -1;
 		}
 #ifdef HAVE_GETRUSAGE
 	      if (report_times && ut + st != 0)

gcc/tradcpp.c

@@ -28,8 +28,6 @@ Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 #include "version.h"
 #include "cppdefault.h"
 
-#include <signal.h>
-
 typedef unsigned char U_CHAR;
 
 /* Name under which this program was invoked.  */
@@ -387,7 +385,6 @@ U_CHAR *skip_to_end_of_comment PARAMS ((FILE_BUF *, int *));
 U_CHAR *skip_quoted_string     PARAMS ((U_CHAR *, U_CHAR *, int,
 					int *, int *, int *));
 
-void pipe_closed	PARAMS ((int));
 int main		PARAMS ((int, char **));
 
 /* Convenience.  Write U"string" to get an unsigned string constant.  */
@@ -457,15 +454,6 @@ int deps_column;
 /* Nonzero means -I- has been seen,
    so don't look for #include "foo" the source-file directory.  */
 int ignore_srcdir;
-
-/* Handler for SIGPIPE.  */
-
-void
-pipe_closed (dummy)
-     int dummy ATTRIBUTE_UNUSED;
-{
-  exit (FATAL_EXIT_CODE);
-}
 
 int
 main (argc, argv)
@@ -515,8 +503,6 @@ main (argc, argv)
   dump_macros = 0;
   no_output = 0;
 
-  signal (SIGPIPE, pipe_closed);
-
   max_include_len = cpp_GCC_INCLUDE_DIR_len + 7;  /* ??? */
 
   memset (pend_files, 0, argc * sizeof (char *));