[Bug middle-end/90779] Fortran array initialization in offload regions

[ams at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90779

--- Comment #6 from Andrew Stubbs <ams at gcc dot gnu.org> ---
There's not observable difference. I don't quite follow what the patch is
trying to achieve, but seems like adding the variable to the offload variables
does not address the issue here.

I've added a hack to mkoffload to force the variables listed in the
offload_var_table to be declared "global". This is sufficient to run the small
testcase correctly. (My larger testcase now has a memory fault, but that could
easily be unrelated.)

If the symbol is declared local then there's no (straight-forward) way to
locate the loaded symbol at runtime, hence the libgomp plugin fail.

Setting the symbol global seems like there could be other issues. Given that
libgomp does not actually need access to this variable at runtime, perhaps the
plugin should just ignore the failure and move on, trusting that unfound
variables are not needed?