internal compiler error: in referenced_var_lookup, at tree-dfa.c

[Jay K]

I have it seemingly working now, much better, thanks for the nudges -- that indeed high id is invalid, and to look again at my GTY use.
I don't know if it made the difference but I changed some whitespace to match others, and
typedef struct foo_t { ... } foo_t;
to
typedef struct foo { ... } foo_t; without the _t on the struct tag.

 - Jay

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