[Bug lto/114574] [14 regression] ICE when building curl with LTO (fld_incomplete_type_of, at ipa-free-lang-data.cc:257) since r14-9763

[uecker at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114574

--- Comment #6 from uecker at gcc dot gnu.org ---
Hm, this is enough:

const struct S * x;
struct S {};
void f(const struct S **);

The TYPE_CANONICAL of the pointer type depends on TYPE_CANONICAL of the target.
So it seems if I set it for completed types the new pointer get a new
TYPE_CANONICAL while old pointers to the incomplete struct are not updated
which then somehow triggers the assertion  (and is wrong).