re PR fortran/50619 (Surprising interaction between -finit-real=NAN and the associate construct)

2012-06-04  Tobias Burnus  <burnus@net-b.de>

        PR fortran/50619
        * resolve.c (build_default_init_expr): Don't initialize
        ASSOCIATE names.

2012-06-04  Tobias Burnus  <burnus@net-b.de>

        PR fortran/50619
        * gfortran.dg/init_flag_10.f90: New.

From-SVN: r188208

gcc/fortran/ChangeLog

+2012-06-04  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/50619
+	* resolve.c (build_default_init_expr): Don't initialize
+	ASSOCIATE names.
+
 2012-06-03  Alessandro Fanfarillo  <fanfarillo.gcc@gmail.com>
 	    Tobias Burnus  <burnus@net-b.de>
 

gcc/fortran/resolve.c

@@ -10103,7 +10103,8 @@ build_default_init_expr (gfc_symbol *sym)
       || sym->attr.data
       || sym->module
       || sym->attr.cray_pointee
-      || sym->attr.cray_pointer)
+      || sym->attr.cray_pointer
+      || sym->assoc)
     return NULL;
 
   /* Now we'll try to build an initializer expression.  */

gcc/testsuite/ChangeLog

+2012-06-04  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/50619
+	* gfortran.dg/init_flag_10.f90: New.
+
 2012-06-04  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/53524

gcc/testsuite/gfortran.dg/init_flag_10.f90

+! { dg-do run }
+! { dg-options "-finit-real=NAN" }
+! { dg-add-options ieee }
+! { dg-skip-if "NaN not supported" { spu-*-* } { "*" } { "" } }
+!
+! PR fortran/50619
+!
+! Contributed by Fred Krogh
+!
+! The NaN initialization used to set the associate name to NaN!
+!
+
+module testa2
+type, public ::  test_ty
+  real :: rmult = 1.0e0
+end type test_ty
+
+contains
+  subroutine test(e, var1)
+    type(test_ty) :: e
+    real :: var1, var2 ! Should get NaN initialized
+
+    ! Should be the default value
+    if (e%rmult /= 1.0) call abort ()
+
+    ! Check that NaN initialization is really turned on
+    if (var1 == var1) call abort () 
+    if (var2 == var2) call abort () 
+
+    ! The following was failing:
+    associate (rmult=>e%rmult)
+      if (e%rmult /= 1.0) call abort ()
+    end associate
+  end subroutine test
+end module testa2
+
+program testa1
+  use testa2
+  type(test_ty) :: e
+  real :: var1 ! Should get NaN initialized
+  call test(e, var1)
+  stop
+end program testa1