https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92701
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-11-27
CC| |burnus at gcc dot gnu.org,
| |pault at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> ---
No regression as 'select rank' is new.
In gfc_check_vardef_context, assoc->variable == NULL and
assoc->target == NULL [this one causes the segfault] and
assoc->st->name == "__tmp_class___class_a_R_15_0t_rank_1"
On the other hand, e->symtree->n.sym->assoc->target exists and
e->symtree->n.sym->assoc->target->symtree == assoc->st.
assoc gets set (ll. 6213–6219) as:
gfc_expr* t = sym->assoc->target;
gcc_assert (t->expr_type == EXPR_VARIABLE);
name = t->symtree->name;
if (t->symtree->n.sym->assoc)
assoc = t->symtree->n.sym->assoc;
else
assoc = sym->assoc;
That's sufficient for:
gcc_assert (name && assoc);
But then it fails when doing:
assoc->target->expr_type
(That's for !assoc->variable – but also the else branch assumes that
assoc->target != NULL.)
