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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/107595] ICE in ix86_push_argument, at
 config/i386/i386.cc:4335
Date: Thu, 17 Nov 2022 21:29:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107595

anlauf at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |anlauf at gcc dot gnu.org

--- Comment #6 from anlauf at gcc dot gnu.org ---
Slight reduction of the testcase:

program p
  type t
     integer, pointer :: b
  end type
! type(t) :: x =3D t(null())   ! OK
  type(t)    x  /t(null())/  ! ICE
  if (associated (x%b)) stop
end

Comparing the -fdump-fortran-original for both variants:

@@ -15,7 +15,7 @@
     result: associated
   symtree: 'null'        || symbol: 'null'=20=20=20=20=20=20=20=20=20
     type spec : (INTEGER 4)
-    attributes: (PROCEDURE INTRINSIC-PROC  FUNCTION IMPLICIT-TYPE
ARRAY-OUTER-DEPENDENCY)
+    attributes: (PROCEDURE  FUNCTION IMPLICIT-TYPE ARRAY-OUTER-DEPENDENCY)
     result: null
   symtree: 'p'           || symbol: 'p'=20=20=20=20=20=20=20=20=20=20=20=20
     type spec : (UNKNOWN 0)
@@ -27,8 +27,8 @@
     result: t
   symtree: 'x'           || symbol: 'x'=20=20=20=20=20=20=20=20=20=20=20=20
     type spec : (DERIVED t)
-    attributes: (VARIABLE IMPLICIT-SAVE)
-    value: t(NULL())
+    attributes: (VARIABLE  DATA)
+    value: t(null[()])

   code:
   IF _gfortran_associated[[((p:x % b) ((arg not-present)))]]


Are we just missing the resolution of NULL() in the failing case early enou=
gh?=