[gcc/devel/gccgo] Fix fortran/93686 -- ICE matching data statements with derived-type pointers.

[gcc/devel/gccgo] Fix fortran/93686 -- ICE matching data statements with derived-type pointers.

[Ian Lance Taylor]

https://gcc.gnu.org/g:d42a2e465d821517819a54f4f613bb6e6443dc05

commit d42a2e465d821517819a54f4f613bb6e6443dc05
Author: Fritz Reese <foreese@gcc.gnu.org>
Date:   Mon Apr 6 16:14:29 2020 -0400

    Fix fortran/93686 -- ICE matching data statements with derived-type pointers.
    
    gcc/fortran/ChangeLog:
    
    2020-04-06  Steven G. Kargl  <kargl@gcc.gnu.org>
    
            PR fortran/93686
            * decl.c (gfc_match_data): Handle data matching for derived type
            pointers.
    
    gcc/testsuite/ChangeLog:
    
    2020-04-06  Steven G. Kargl  <kargl@gcc.gnu.org>
    
            PR fortran/93686
            * gfortran.dg/pr93686_1.f90: New test.
            * gfortran.dg/pr93686_2.f90: Likewise.
            * gfortran.dg/pr93686_3.f90: Likewise.
            * gfortran.dg/pr93686_4.f90: Likewise.

Diff:
---
 gcc/fortran/ChangeLog                   |  6 ++++++
 gcc/fortran/decl.c                      |  4 ++++
 gcc/testsuite/ChangeLog                 |  8 ++++++++
 gcc/testsuite/gfortran.dg/pr93686_1.f90 | 10 ++++++++++
 gcc/testsuite/gfortran.dg/pr93686_2.f90 | 10 ++++++++++
 gcc/testsuite/gfortran.dg/pr93686_3.f90 |  9 +++++++++
 gcc/testsuite/gfortran.dg/pr93686_4.f90 |  8 ++++++++
 7 files changed, 55 insertions(+)

diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 8c4ace7cdfa..435f93d0d9e 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,9 @@
+2020-04-06  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/93686
+	* decl.c (gfc_match_data): Handle data matching for derived type
+	pointers.
+
 2020-04-02  Tobias Burnus  <tobias@codesourcery.com>
 
 	* gfortran.h (gfc_resolve_formal_arglist): Add prototype.
diff --git a/gcc/fortran/decl.c b/gcc/fortran/decl.c
index ea309089ac9..b3ed63c97cc 100644
--- a/gcc/fortran/decl.c
+++ b/gcc/fortran/decl.c
@@ -696,6 +696,10 @@ gfc_match_data (void)
 	  /* F2008:C567 (R536) A data-i-do-object or a variable that appears
 	     as a data-stmt-object shall not be an object designator in which
 	     a pointer appears other than as the entire rightmost part-ref.  */
+	  if (!e->ref && e->ts.type == BT_DERIVED
+	      && e->symtree->n.sym->attr.pointer)
+	    goto partref;
+
 	  ref = e->ref;
 	  if (e->symtree->n.sym->ts.type == BT_DERIVED
 	      && e->symtree->n.sym->attr.pointer
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 2198e18198b..ef5e0cf527c 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2020-04-06  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/93686
+	* gfortran.dg/pr93686_1.f90: New test.
+	* gfortran.dg/pr93686_2.f90: Likewise.
+	* gfortran.dg/pr93686_3.f90: Likewise.
+	* gfortran.dg/pr93686_4.f90: Likewise.
+
 2020-04-06  Joel Brobecker  <brobecker@adacore.com>
 
 	* gcc.target/arm/div64-unwinding.c: Skip on vxworks_kernel targets.
diff --git a/gcc/testsuite/gfortran.dg/pr93686_1.f90 b/gcc/testsuite/gfortran.dg/pr93686_1.f90
new file mode 100644
index 00000000000..0e7560a5c17
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr93686_1.f90
@@ -0,0 +1,10 @@
+! { dg-do compile }
+! PR fortran/93686
+
+program p
+   type t
+      integer :: a
+   end type
+   type(t), pointer :: x
+   data x /t(2)/ ! { dg-error "part-ref with pointer attribute near ... is not rightmost part-ref of data-stmt-object" }
+end
diff --git a/gcc/testsuite/gfortran.dg/pr93686_2.f90 b/gcc/testsuite/gfortran.dg/pr93686_2.f90
new file mode 100644
index 00000000000..aac4d9138ee
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr93686_2.f90
@@ -0,0 +1,10 @@
+! { dg-do compile }
+! PR fortran/93686
+
+program p
+   type t
+      integer :: a = 1
+   end type
+   type(t), pointer :: x
+   data x /t(2)/ ! { dg-error "part-ref with pointer attribute near ... is not rightmost part-ref of data-stmt-object" }
+end
diff --git a/gcc/testsuite/gfortran.dg/pr93686_3.f90 b/gcc/testsuite/gfortran.dg/pr93686_3.f90
new file mode 100644
index 00000000000..5b570407f8f
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr93686_3.f90
@@ -0,0 +1,9 @@
+! { dg-do compile }
+! PR fortran/93686
+
+program p
+   type t
+   end type
+   type(t), pointer :: x
+   data x /t()/ ! { dg-error "part-ref with pointer attribute near ... is not rightmost part-ref of data-stmt-object" }
+end
diff --git a/gcc/testsuite/gfortran.dg/pr93686_4.f90 b/gcc/testsuite/gfortran.dg/pr93686_4.f90
new file mode 100644
index 00000000000..ff3ae764ab7
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr93686_4.f90
@@ -0,0 +1,8 @@
+! { dg-do compile }
+! PR fortran/93686
+
+type t
+end type
+type(t), pointer :: x
+data x / ! { dg-error "part-ref with pointer attribute near ... is not rightmost part-ref of data-stmt-object" }
+end