re PR libfortran/77393 (Revision r237735 changed the behavior of F0.0)

2016-08-31  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/77393
	* gfortran.dg/fmt_f0_2.f90: New test.

From-SVN: r239901

gcc/testsuite/ChangeLog

+2016-08-31  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+
+	PR libgfortran/77393
+	* gfortran.dg/fmt_f0_2.f90: New test.
+
 2016-08-31  Marc Glisse  <marc.glisse@inria.fr>
 
 	* gcc.target/i386/pr59539-2.c: Adapt options.

gcc/testsuite/gfortran.dg/fmt_f0_2.f90

+! { dg-do run }
+! PR77393
+program testbigf0 ! Can enormous numbers be printed with F0.0 format?
+  implicit none
+  character(10000) :: str
+  write(str, "(f0.0)") -huge(1.0) 
+  if (len(trim(str)).lt.41) error stop "FAILED AT LINE 7"
+  write(str, "(f0.0)") -huge(1.0_8)
+  if (len(trim(str)).lt.311) error stop "FAILED AT LINE 9"
+  write(str, "(f0.0)") -huge(1.0_10)
+  if (len(trim(str)).lt.4935) error stop "FAILED AT LINE 11"
+  write(str, "(f0.10)") -huge(1.0_16)
+  if (len(trim(str)).lt.4945) error stop "FAILED AT LINE 13"
+end program testbigf0
+