* 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, 10 insertions, 3 deletions

diff --git a/gcc/gengenrtl.c b/gcc/gengenrtl.c
index d656b4aca3c..21f46df1461 100644
--- a/gcc/gengenrtl.c
+++ b/gcc/gengenrtl.c
@@ -351,7 +351,10 @@ genheader ()
 {
   int i;
   const char **fmt;
-  
+
+  puts ("#ifndef GCC_GENRTL_H");
+  puts ("#define GCC_GENRTL_H\n");
+
   for (fmt = formats; *fmt; ++fmt)
     gendecl (*fmt);
 
@@ -360,6 +363,8 @@ genheader ()
   for (i = 0; i < NUM_RTX_CODE; i++)
     if (! special_format (defs[i].format))
       genmacro (i);
+
+  puts ("\n#endif /* GCC_GENRTL_H */");
 }
 
 /* Generate the text of the code file we write, genrtl.c.  */
@@ -420,6 +425,8 @@ main (argc, argv)
   else
     gencode ();
 
-  fflush (stdout);
-  return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
+  if (ferror (stdout) || fflush (stdout) || fclose (stdout))
+    return FATAL_EXIT_CODE;
+
+  return SUCCESS_EXIT_CODE;
 }