re PR fortran/69455 ([F08] Assembler error(s) when using intrinsic modules in two BLOCK)

2019-10-18  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/69455
	* trans-decl.c (generate_local_decl): Avoid misconstructed
	intrinsic modules in a BLOCK construct.

2019-10-18  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/69455
	* gfortran.dg/pr69455_1.f90: New test.
	* gfortran.dg/pr69455_2.f90: Ditto.

From-SVN: r277158

gcc/fortran/ChangeLog

+2019-10-18  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/69455
+	* trans-decl.c (generate_local_decl): Avoid misconstructed
+	intrinsic modules in a BLOCK construct.
+
 2019-10-18  Tobias Burnus  <tobias@codesourcery.com>
 
 	PR fortran/91586

gcc/fortran/trans-decl.c

@@ -5987,7 +5987,14 @@ generate_local_decl (gfc_symbol * sym)
 
       if (sym->ns && sym->ns->construct_entities)
 	{
-	  if (sym->attr.referenced)
+	  /* Construction of the intrinsic modules within a BLOCK
+	     construct, where ONLY and RENAMED entities are included,
+	     seems to be bogus.  This is a workaround that can be removed
+	     if someone ever takes on the task to creating full-fledge
+	     modules.  See PR 69455.  */
+	  if (sym->attr.referenced
+	      && sym->from_intmod != INTMOD_ISO_C_BINDING
+	      && sym->from_intmod != INTMOD_ISO_FORTRAN_ENV)
 	    gfc_get_symbol_decl (sym);
 	  sym->mark = 1;
 	}

gcc/testsuite/ChangeLog

+2019-10-18  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/69455
+	* gfortran.dg/pr69455_1.f90: New test.
+	* gfortran.dg/pr69455_2.f90: Ditto.
+
 2019-10-18  Andre Vieira  <andre.simoesdiasvieira@arm.com>
 
 	* gcc.target/arm/multilib.exp: Add extra tests.

gcc/testsuite/gfortran.dg/pr69455_1.f90

+! { dg-do run }
+program foo
+   block
+      use, intrinsic :: iso_c_binding, only: wp => c_float, ik => c_int
+      if (ik /= 4) stop 1
+      if (wp /= 4) stop 2
+   end block
+   block
+      use, intrinsic :: iso_c_binding, only: wp => c_double, ik => c_int64_t
+      if (ik /= 8) stop 3
+      if (wp /= 8) stop 4
+   end block
+end program foo
+

gcc/testsuite/gfortran.dg/pr69455_2.f90

+! { dg-do run }
+program foo
+   block
+      use, intrinsic :: ISO_FORTRAN_ENV, only: wp => REAL32, ik => INT32
+      if (ik /= 4) stop 1
+      if (wp /= 4) stop 2
+   end block
+   block
+      use, intrinsic :: ISO_FORTRAN_ENV, only: wp => REAL64, ik => INT64
+      if (ik /= 8) stop 3
+      if (wp /= 8) stop 4
+   end block
+end program foo