[Bug other/63426] [meta-bug] Issues found with -fsanitize=undefined

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63426
Bug 63426 depends on bug 115967, which changed state.

Bug 115967 Summary: ubsan: shift exponent 64 is too large for 64-bit type HOST_WIDE_INT in ext-dce.cc on line 600 since r15-1901-g98914f9eba5f19
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115967

           What    |Removed                     |Added
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             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |DUPLICATE