[Bug c++/97191] ICE In expand_expr_real_1, at expr.c:10234

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97191

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|                            |2020-09-24
             Status|UNCONFIRMED                 |NEW
      Known to fail|                            |10.2.1, 11.0

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.

10238         gcc_assert (!exp
10239                     || SCOPE_FILE_SCOPE_P (context)
10240                     || context == current_function_decl
10241                     || TREE_STATIC (exp)
10242                     || DECL_EXTERNAL (exp)
(gdb) l
10243                     /* ??? C++ creates functions that are not
TREE_STATIC.  */
10244                     || TREE_CODE (exp) == FUNCTION_DECL);
(gdb) p exp
$1 = <var_decl 0x7ffff697e120 a>
(gdb) p current_function_decl 
$2 = <function_decl 0x7ffff696dc00 __ct_base >
(gdb) p exp->decl_minimal.context 
$3 = <function_decl 0x7ffff696d400 __ct >

but the underlying reason may be a stale VLA reference due to a missing
DECL_EXPR.