[Bug fortran/107679] [13 Regression] ICE in maybe_register_def, at tree-into-ssa.cc:1914

[anlauf at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107679

--- Comment #2 from anlauf at gcc dot gnu.org ---
Interesting.  Adding a line

  print *, z

after the call

  call s1(z)

make the ICE go away.

Is it the CLOBBER that confuses us?