[Bug fortran/103717] ICE in doloop_code, at fortran/frontend-passes.c:2656

[anlauf at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103717

anlauf at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-12-14
                 CC|                            |anlauf at gcc dot gnu.org
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
           Priority|P3                          |P4

--- Comment #1 from anlauf at gcc dot gnu.org ---
Confirmed.

NULL pointer dereference:


diff --git a/gcc/fortran/frontend-passes.c b/gcc/fortran/frontend-passes.c
index c106ee0957a..6ffe072b185 100644
--- a/gcc/fortran/frontend-passes.c
+++ b/gcc/fortran/frontend-passes.c
@@ -2653,7 +2653,7 @@ doloop_code (gfc_code **c, int *walk_subtrees
ATTRIBUTE_UNUSED,

              do_sym = cl->ext.iterator->var->symtree->n.sym;

-             if (a->expr && a->expr->symtree
+             if (a->expr && a->expr->symtree && f->sym
                  && a->expr->symtree->n.sym == do_sym)
                {
                  if (f->sym->attr.intent == INTENT_OUT)