Module outlives_for_liveness 

Structs

FreeRegionsVisitor

Visits free regions in the type that are relevant for liveness computation. These regions are passed to OP.

Functions

args_known_to_outlive_alias_params 🔒

For each region param of this alias compute the indices of the identity args that are known to outlive it, given only the alias’s declared where-clauses.

args_known_to_outlive_non_opaque_params 🔒

args_known_to_outlive_opaque_params 🔒

For each captured region of this alias, compute the captured identity args that are known to outlive it, given the definition of the opaque type in the the parent context.

live_args_for_alias_from_outlives_bounds 🔒

For a given alias type, this returns the set of indices into the identity generic args that are relevant for liveness, that can be inferred from outlives bounds on the alias itself, and the explicit and implicit outlives clauses of the alias. Callers should use the indices with the concrete args of the alias.

live_args_for_outlives_clause 🔒

For a param-env clause for<'v..> <T as Trait>::Assoc<..>: 'bound that applies to ty (an alias with alias_def_id), returns the set of indices into the identity args that the underlying type could possibly capture, as restricted by this clause.