Re: [Gc] gc, guile, and NetBSD

  Current GC_FirstDLOpenedLinkMap() for NetBSD calls dlinfo(RTLD_SELF,
  RTLD_DI_LINKMAP, &lm) to find link_map.  So it will find link_map of
  libgc.

  With guile's case, libgc is link to libguile and libguile is linked to
  the guile command, so libgc is not the first one in the link_map chain.

  That's why, data section of libguile, where scm_protects exists, isn't
  added to GC root and GC_is_visible fails.

Very interesting!   That's great to have figured out what's going on.

I wonder if this is a general issue not about NetBSD, or really why
guile/gc seem to work on Linux and other platforms.  Is it a happy
accident of the dynamic linker and ordering, or is a more general fix
appropriate.

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