Updates:
Cc: [email protected]
Comment #5 on issue 4259 by [email protected]: DCHECK failure:
scope_info_->StackSlotIndex(*name_handle) < 0 || is_block_scope()
https://code.google.com/p/v8/issues/detail?id=4259
Having poked more closely at this in gdb (thanks to jkummerow for the core
file!), I think this is not related to block scopes. We are in a state
where the ScopeInfo has a single stack local ("h"), but the Scope has an
empty variables_ table. For that matter, the ScopeInfo also has one
parameter and two ContextLocals, none of which seem to be represented in
the Scope.
My knowledge of lazy compilation isn't the best, but reading the code for
DeserializeScopeChain (and the Scope constructor that takes a ScopeInfo) it
seems like this should be an easy state to get into, since only the
num_heap_slots_ of a Scope and the chain (outer_scope_ and inner_scopes) is
initialized by DeserializeScopeChain.
I can keep poking at this, but I'd suggest that someone more familiar with
the mechanics of lazy compilation would be a better assignee.
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