Prevent going into an infinite loop upon encountering an enuterminated comment.

From-SVN: r19082

gcc/ChangeLog

+Fri Apr 10 13:40:20 1998  Nick Clifton  <nickc@cygnus.com>
+
+	* rtl.c (read_skip_spaces): Prevent infinite loops upon
+	encountering unterminated comments.
+
 Fri Apr 10 10:43:41 1998  Jeffrey A Law  (law@cygnus.com)
 
 	* emit-rtl.c (operand_subword): Properly handle CONST_INTs for

gcc/rtl.c

@@ -496,7 +496,8 @@ read_skip_spaces (infile)
 	;
       else if (c == ';')
 	{
-	  while ((c = getc (infile)) && c != '\n') ;
+	  while ((c = getc (infile)) && c != '\n' && c != EOF)
+	    ;
 	}
       else if (c == '/')
 	{
@@ -506,7 +507,7 @@ read_skip_spaces (infile)
 	    dump_and_abort ('*', c, infile);
 	  
 	  prevc = 0;
-	  while ((c = getc (infile)))
+	  while ((c = getc (infile)) && c != EOF)
 	    {
 	      if (prevc == '*' && c == '/')
 		break;