[Bug ipa/70348] [6 Regression][openacc] ICE in visit_ref_for_mod_analysis, at ipa-prop.c

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70348

--- Comment #5 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
the intended current implementation is to treat 'sum' as firstprivate. 
however, putting in an explicit firstprivate causes another different ICE (in 
lower_oacc_reductions) -- regardless of whether 'sum' is a parameter, or a
local (initialized) variable.  Clearly at least two other bugs lurk.