[Bug tree-optimization/96672] Missing -Wclobbered diagnostic, or: __attribute__((returns_twice)) does not inhibit constant folding across call site

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96672

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
           Keywords|                            |wrong-code
   Last reconfirmed|                            |2020-08-25

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
abnormal edges are "rebuilt" during RTL expansion, we have a duplicate
somewhere for this correctness bug.