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Subject: [Bug c++/104533] New: [12 Regression] ICE in
 update_vtable_references, at ipa-visibility.cc:383
Date: Mon, 14 Feb 2022 19:55:11 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104533

            Bug ID: 104533
           Summary: [12 Regression] ICE in update_vtable_references, at
                    ipa-visibility.cc:383
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Started between 20211114 and 20211121 :


$ cat z1.cc
struct B {
  virtual ~B();
};
__attribute__((target_clones("avx")))
B::~B() =3D default;


$ cat z2.cc
struct B {
  virtual ~B();
};
__attribute__((target_clones("sse","avx")))
B::~B() =3D default;


$ g++-12-20220213 -c z1.cc -fPIC -Ofast
during IPA pass: visibility
z1.cc:5:18: internal compiler error: Segmentation fault
    5 | B::~B() =3D default;
      |                  ^
0xda1fdf crash_signal
        ../../gcc/toplev.cc:322
0x19be64f update_vtable_references
        ../../gcc/ipa-visibility.cc:383
0x1029952 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
        ../../gcc/tree.cc:11070
0x1029b9c walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
        ../../gcc/tree.cc:11157
0x19bf549 function_and_variable_visibility
        ../../gcc/ipa-visibility.cc:868=