[Bug debug/118790] [15 Regression] ICE when building fiat (crash in loc_list_from_tree_1)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118790

--- Comment #22 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #21)
> I think the VAR_DECL should be reachable from elsewhere (BLOCK_VARS ideally,
> I'd like to get rid of local_decls).  IIRC I wondered at some point
> whether remove_unused_locals needs to walk DECL_VALUE_EXPRs but I think
> I went down an alternate place for the fix/PR I'm remembering (which now
> makes it difficult to track down...).

PR116907 exactly.