re PR fortran/71862 (ICE in gfc_add_component_ref, at fortran/class.c:241)

2016-07-22  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/71862
	* class.c: Remove assert.  Iterate over component only if non-null.

2016-07-22  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/71862
	* gfortran.dg/pr71862.f90: New test.

From-SVN: r238774

diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index b056e0e86e87a098ea2384ae6a1587d3f609ed07..0847e64fc5f04ae34707bfd1b3eacf04b9f7e8ac 100644 (file)
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,8 @@
+2016-07-26  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+       PR fortran/71862
+       * class.c: Remove assert.  Iterate over component only if non-null.
+
 2016-07-22  Steven G. Kargl  <kargl@gcc.gnu.org>
 
        PR fortran/71935

diff --git a/gcc/fortran/class.c b/gcc/fortran/class.c
index a627448529e32734fbb98a65198fd75d02ba8ee4..6d324a612426cb3ed2e5c8edf2d05caf02ca0073 100644 (file)
--- a/gcc/fortran/class.c
+++ b/gcc/fortran/class.c
@@ -238,12 +238,14 @@ gfc_add_component_ref (gfc_expr *e, const char *name)
     /* Avoid losing memory.  */
     gfc_free_ref_list (*tail);
   c = gfc_find_component (derived, name, true, true, tail);
-  gcc_assert (c);
-  for (ref = *tail; ref->next; ref = ref->next)
-    ;
-  ref->next = next;
-  if (!next)
-    e->ts = c->ts;
+
+  if (c) {
+    for (ref = *tail; ref->next; ref = ref->next)
+      ;
+    ref->next = next;
+    if (!next)
+      e->ts = c->ts;
+  }
 }
 
 

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 23a30625ccf2e028fa3ba0ebb1372494be0939f3..3c335c6eb424f41a85a3e7a1af524349a586a9e8 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2016-07-26  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+       PR fortran/71862
+       * gfortran.dg/pr71862.f90: New test.
+
 2016-07-26  Martin Sebor  <msebor@redhat.com>
 
        * gcc.dg/atomic/pr71675.c: Replace the unsupported c11 target

diff --git a/gcc/testsuite/gfortran.dg/pr71862.f90 b/gcc/testsuite/gfortran.dg/pr71862.f90
new file mode 100644 (file)
index 0000000..411bfc2
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr71862.f90
@@ -0,0 +1,16 @@
+! { dg-do compile }
+program p
+   type t
+      integer :: n = 0
+      integer, pointer :: q => null()
+   end type
+   type(t) :: x
+   print *, associated(x%q)
+   x = f()
+   print *, associated(x%q)
+contains
+   function f() result (z)    ! { dg-error "must be dummy, allocatable or pointer" }
+      class(t) :: z
+      print *, associated(z%q)
+   end
+end