re PR libfortran/20755 (gfortran - prints the same number with 1p4G12.3 two different ways)

	PR libfortran/20755
	* write.c (write_float): A G edit descriptor may locally change
	the scale factor, but it needs to be restored afterwards.

	* gfortran.dg/pr20755.f: New test.

From-SVN: r97627

gcc/testsuite/ChangeLog

+2005-04-05  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
+
+	PR libfortran/20755
+	* gfortran.dg/pr20755.f: New test.
+
 2005-04-05  Feng Wang  <fengwang@nudt.edu.cn>
 
 	* gfortran.dg/pr15959.f90: New test.

gcc/testsuite/gfortran.dg/pr20755.f

+! PR libfortran/20755
+! { dg-do run }
+      character*30 s
+      
+      write (s,2000) 0.0, 0.02
+      if (s .ne. "    0.00       2.000E-02") call abort
+      write (s,2000) 0.01, 0.02
+      if (s .ne. "   1.000E-02   2.000E-02") call abort
+ 2000 format (1P2G12.3)
+      end

libgfortran/ChangeLog

+2005-04-05  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
+
+	PR libfortran/20755
+	* write.c (write_float): A G edit descriptor may locally change
+	the scale factor, but it needs to be restored afterwards.
+
 2005-04-03  Dale Ranta  <dir@lanl.gov>
             Francois-Xavier Coudert  <coudert@clipper.ens.fr>
 

libgfortran/io/write.c

@@ -674,7 +674,7 @@ static void
 write_float (fnode *f, const char *source, int len)
 {
   double n;
-  int nb =0, res;
+  int nb =0, res, save_scale_factor;
   char * p, fin;
   fnode *f2 = NULL;
 
@@ -723,8 +723,10 @@ write_float (fnode *f, const char *source, int len)
     }
   else
     {
+      save_scale_factor = g.scale_factor;
       f2 = calculate_G_format(f, n, len, &nb);
       output_float (f2, n, len);
+      g.scale_factor = save_scale_factor;
       if (f2 != NULL)
         free_mem(f2);