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Re: [PATCH] Fix PR debug/14114
> The tree is referenced within a function, so it is processed by the
> back-end when debug info is generated for the function. Then
> gen_subprogram_decl decides what to do with it.
gen_subprogram_die of course. Here is the relevant comment:
/* In the case where we are describing a mere function declaration, all we
need to do here (and all we *can* do here) is to describe the *types* of
its formal parameters. */