forked from Imagelibrary/binutils-gdb
908a7e7167
ctf_import needs a bunch of fixes to work with pure BTF dicts -- and, for that matter, importing newly-created parent dicts that have never been written out, which may have a bunch of nonprovisional types (if types were added to it before any imports were done) or may not (if at least one ctf_import into it was done before any types were added). So we adjust things so that the values that are checked against are the nonprovisional-types values: the header revisions actually changed the name of cth_parent_typemax to cth_parent_ntypes to make this clearer, so catch up with that. In the parent, we have to use ctf_idmax, not ctf_typemax. One thing we must prohibit is that you cannot add a bunch of types to a child and then import a parent into it: the type IDs will all be wrong and the string offsets more so. This was partly prohibited: prohibit it entirely (excepting only that the not-actually-written-out void type we might add to new BTF dicts does not influence this check). Since BTF children don't have a cth_parent_ntypes or a cth_parent_strlen, we cannot check this stuff, but just set them and hope.