https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106981
--- Comment #6 from Tobias Burnus <burnus at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #5)
> The fix could be either partially backport what C++ FE did in
> --- gcc/c/c-typeck.cc.jj 2022-09-23 09:02:56.525318361 +0200
> +++ gcc/c/c-typeck.cc 2022-09-23 10:33:06.596467788 +0200
> + if (CONSTANT_CLASS_P (t1) && !comptypes (TREE_TYPE (t1), TREE_TYPE (t2)))
> + return false;
Maybe. Though I think we still need something like my:
+ if (n > TREE_OPERAND_LENGTH (t2))
+ return false;
(With ">" not ">=" as I accidentally had.)
Given that
if (!c_tree_equal (TREE_OPERAND (t1, i), TREE_OPERAND (t2, i)))
does not make sense when exceeding the operand length!
Nonetheless, ...
> Now, wonder what will break if I just strip same type casts and
> for others like in C++ require same type.
sounds like a reasonable approach,.
