https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94339

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |10.0
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
           Keywords|                            |needs-bisection
   Last reconfirmed|                            |2020-03-26
            Version|unknown                     |10.0

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
An easy fix would be to use if (TREE_OVERFLOW_P (result)) clearly the code
fails to check that result is INTEGER_CST.  Probably latent and only an
unrelated change changes the input to this function.

Testcase?

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