[Bug c++/86660] New: libgomp.c++/for-15.C ICEs with nvptx offloading

[cesar at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86660

            Bug ID: 86660
           Summary: libgomp.c++/for-15.C ICEs with nvptx offloading
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: cesar at gcc dot gnu.org
  Target Milestone: ---

I see the following ICE with libgomp.c++/for-15.C with nvptx-offloading:

lto1: internal compiler error: in input_varpool_node, at lto-cgraph.c:1393
0xc1d8d5 input_varpool_node
        /openacc/trunk/gcc-mainline/gcc/lto-cgraph.c:1391
0xc1de1e input_cgraph_1
        /openacc/trunk/gcc-mainline/gcc/lto-cgraph.c:1513
0xc1e9d5 input_symtab()
        /openacc/trunk/gcc-mainline/gcc/lto-cgraph.c:1798
0x79d588 read_cgraph_and_symbols
        /openacc/trunk/gcc-mainline/gcc/lto/lto.c:2917
0x79e9b8 lto_main()
        /openacc/trunk/gcc-mainline/gcc/lto/lto.c:3400
Please submit a full bug report,
with preprocessed source if appropriate.
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mkoffload: fatal error: x86_64-none-linux-gnu-accel-nvptx-none-gcc returned 1
exit status
compilation terminated.
lto-wrapper: fatal error:
/openacc/trunk/install/libexec/gcc/x86_64-none-linux-gnu/9.0.0//accel/nvptx-none/mkoffload
returned 1 exit status
compilation terminated.
/openacc/trunk/install/lib/gcc/x86_64-none-linux-gnu/9.0.0/../../../../x86_64-none-linux-gnu/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status

I think I've seen similar problems in OpenACC, so this might be fixed in og8
already.