genattr.c, [...]: Wrap generated header in multiple-include guard.

	* genattr.c, gencheck.c, gencodes.c, genconfig.c, genflags.c,
	gengenrtl.c:  Wrap generated header in multiple-include guard.
	Improve error checking.

From-SVN: r41006

1 files changed, 9 insertions, 7 deletions

diff --git a/gcc/gencodes.c b/gcc/gencodes.c
index 3e14f39b8db..7e4f9644263 100644
--- a/gcc/gencodes.c
+++ b/gcc/gencodes.c
@@ -88,10 +88,10 @@ main (argc, argv)
   if (init_md_reader (argv[1]) != SUCCESS_EXIT_CODE)
     return (FATAL_EXIT_CODE);
 
-  printf ("/* Generated automatically by the program `gencodes'\n\
-from the machine description file `md'.  */\n\n");
-
-  printf ("#ifndef MAX_INSN_CODE\n\n");
+  puts ("/* Generated automatically by the program `gencodes'");
+  puts ("   from the machine description file `md'.  */\n");
+  puts ("#ifndef GCC_INSN_CODES_H");
+  puts ("#define GCC_INSN_CODES_H\n");
 
   /* Read the machine description.  */
 
@@ -118,10 +118,12 @@ from the machine description file `md'.  */\n\n");
 
   output_predicate_decls ();
 
-  printf ("\n#endif /* MAX_INSN_CODE */\n");
+  puts("\n#endif /* GCC_INSN_CODES_H */");
+
+  if (ferror (stdout) || fflush (stdout) || fclose (stdout))
+    return FATAL_EXIT_CODE;
 
-  fflush (stdout);
-  return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
+  return SUCCESS_EXIT_CODE;
 }
 
 /* Define this so we can link with print-rtl.o to get debug_rtx function.  */