[Bug c++/118396] [15 regression] -O1+ leads to reading uninitialized data when virtual destructor is present since r15-6369-gfa99002538bc91

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118396

--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This difference seems to be the problem:

-    vector::vector (&items_, (const struct Data &) &TARGET_EXPR <D.2996, <<<
Unknown tree: void_cst >>>>) >>>>>;
+    vector::vector (&items_, (const struct Data &) &TARGET_EXPR <D.2994,
(void) (D.2994 = {.status=0, .data={._vptr.Foo=&_ZTV3Foo + 16}})>) >>>>>;