* genattr.c, gencheck.c, gencodes.c, genconfig.c, genflags.c,

	gengenrtl.c:  Wrap generated header in multiple-include guard.
	Improve error checking.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@41006 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 12 insertions, 6 deletions

diff --git a/gcc/genattr.c b/gcc/genattr.c
index bb7ccbf7c59..4fff3a100f8 100644
--- a/gcc/genattr.c
+++ b/gcc/genattr.c
@@ -213,14 +213,16 @@ main (argc, argv)
   if (init_md_reader (argv[1]) != SUCCESS_EXIT_CODE)
     return (FATAL_EXIT_CODE);
 
-  printf ("/* Generated automatically by the program `genattr'\n\
-from the machine description file `md'.  */\n\n");
+  puts ("/* Generated automatically by the program `genattr'");
+  puts ("   from the machine description file `md'.  */\n");
+  puts ("#ifndef GCC_INSN_ATTR_H");
+  puts ("#define GCC_INSN_ATTR_H\n");
 
   /* For compatibility, define the attribute `alternative', which is just
      a reference to the variable `which_alternative'.  */
 
-  printf ("#define HAVE_ATTR_alternative\n");
-  printf ("#define get_attr_alternative(insn) which_alternative\n");
+  puts ("#define HAVE_ATTR_alternative");
+  puts ("#define get_attr_alternative(insn) which_alternative");
      
   /* Read the machine description.  */
 
@@ -359,8 +361,12 @@ from the machine description file `md'.  */\n\n");
   printf("#define ATTR_FLAG_unlikely\t0x10\n");
   printf("#define ATTR_FLAG_very_unlikely\t0x20\n");
 
-  fflush (stdout);
-  return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
+  puts("\n#endif /* GCC_INSN_ATTR_H */");
+
+  if (ferror (stdout) || fflush (stdout) || fclose (stdout))
+    return FATAL_EXIT_CODE;
+
+  return SUCCESS_EXIT_CODE;
 }
 
 /* Define this so we can link with print-rtl.o to get debug_rtx function.  */