https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66714
--- Comment #5 from vries at gcc dot gnu.org --- Created attachment 35891 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35891&action=edit Patch to make error more verbose Using this patch, we get a more verbose error: ... decl_value_expr_lookup could not find mapping for from 0x7fb78598a870 in function main._omp_fn.46 from: fdata.5 ...