https://sourceware.org/bugzilla/show_bug.cgi?id=26356
--- Comment #4 from John David Anglin <danglin at gcc dot gnu.org> ---
Hi Alan,
You are correct. som_bfd_copy_private_section_data() is called once for the
subspace $DATA$. This code is problematic:
/* Reparent if necessary. */
if (som_section_data (osection)->copy_data->container)
som_section_data (osection)->copy_data->container =
som_section_data (osection)->copy_data->container->output_section;
After the memcpy, som_section_data (osection)->copy_data->container points to
the asection for $PRIVATE$.
som_section_data(osection)->copy_data->container->output_section is NULL.
Setting som_section_data (osection)->copy_data->container to NULL causes the
segmentation fault in som_is_space(). It is inlined in som_prep_headers().
osection no longer points to a valid space or subspace. isection pointed
to a valid subspace.
If som_is_space() and som_is_subspace() are modified to return false when
the container is NULL, the output doesn't contain $PRIVATE$ and $DATA$, and
the test fails.
I'm thinking we need to copy both the containing space for $DATA$ and $DATA$.
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