re PR fortran/35036 (illegal E format descriptor produces wrong output)

2008-02-20  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/35036
	* write_float.def (output_float):  Add error checks for zero digits
	after decimal point in E and D format specifiers.

From-SVN: r132510

libgfortran/ChangeLog

+2008-02-20  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+
+	PR libfortran/35036
+	* write_float.def (output_float):  Add error checks for zero digits
+	after decimal point in E and D format specifiers.
+	
 2008-02-10  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR libfortran/35063

libgfortran/io/write_float.def

@@ -167,6 +167,19 @@ output_float (st_parameter_dt *dtp, const fnode *f, char *buffer, size_t size,
     case FMT_E:
     case FMT_D:
       i = dtp->u.p.scale_factor;
+      if (d <= 0 && i == 0)
+	{
+	  generate_error (&dtp->common, LIBERROR_FORMAT, "Precision not "
+			  "greater than zero in format specifier 'E' or 'D'");
+	  return;
+	}
+      if (i <= -d || i >= d + 2)
+	{
+	  generate_error (&dtp->common, LIBERROR_FORMAT, "Scale factor "
+			  "out of range in format specifier 'E' or 'D'");
+	  return;
+	}
+
       if (!zero_flag)
 	e -= i;
       if (i < 0)