https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64666
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-10-10
Ever confirmed|0 |1
--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> ---
Ah, true. There's a comment in the parser that says
/* Although the grammar says "conditional-expression", we parse an
"assignment-expression", which also permits "throw-expression"
and the use of assignment operators. In the case that
ALLOW_NON_CONSTANT_P is false, we get better errors than we would
otherwise. In the case that ALLOW_NON_CONSTANT_P is true, it is
actually essential that we look for an assignment-expression.
For example, cp_parser_initializer_clauses uses this function to
determine whether a particular assignment-expression is in fact
constant. */
but with constexpr it seems that we need to be stricter.
