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From: "johelegp at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107079] New: ICE initializing lifetime-extended constexpr
 variable that stores its this pointer
Date: Wed, 28 Sep 2022 21:58:23 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: johelegp at gmail dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107079

            Bug ID: 107079
           Summary: ICE initializing lifetime-extended constexpr variable
                    that stores its this pointer
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: johelegp at gmail dot com
                CC: johelegp at gmail dot com
  Target Milestone: ---

See https://godbolt.org/z/5asqcnoMe.

```C++
struct X {
  const X* x =3D this;
};
constexpr const X& x =3D X{};
```

```
<source>:4:26: internal compiler error: in cxx_eval_constant_expression, at
cp/constexpr.cc:7591
    4 | constexpr const X& x =3D X{};
      |                          ^
0x23507de internal_error(char const*, ...)
        ???:0
0xa9ea08 fancy_abort(char const*, int, char const*)
        ???:0
0xd4f2da store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
        ???:0
0xb78f38 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
        ???:0
0xc786f7 c_parse_file()
        ???:0
0xdb4a19 c_common_parse_file()
        ???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1
```=