https://llvm.org/bugs/show_bug.cgi?id=26741
George Burgess <george.burgess...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |WONTFIX
--- Comment #3 from George Burgess <george.burgess...@gmail.com> ---
So, I abandoned the revision for a few reasons:
- Having this detection would reduce our accuracy
- GCC 4.8 acts just as we do, and there hasn't seemed to be a problem with that
yet
- There's a reasonably straightforward workaround if you do encounter this
behavior [1] (...and I doubt it would be encountered often)
If you strongly disagree, feel free to reopen this bug+code review. :)
[1] -
void test3() {
struct A { int i; char buf[1]; };
struct B : A {};
struct C { int i; B bs[1]; } *c;
// Delegates to @llvm.objectsize on trunk, because you've casted to an A*.
gi = __builtin_object_size(&((A*)&c->bs)->buf[0], 1);
}
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