[Bug sanitizer/66343] "Error: .Lubsan_type3 already defined" with UBSan and precompiled headers

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66343

--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 6.3+ as well.