https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103830
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think the recent modref change made the function const.
And no, we shouldn't DSE any volatile store and generally we don't. It's
probably some side-effect of modref that we do. Using -fno-ipa-pure-const
"fixes" this bug with -Og:
local analysis of void MyClass::call()/1
NULL memory access; terminating BB
Function is locally const.
callgraph:
so it's caused by the recent change to mitigate path-isolation damage to
modref.
