There was a rare mismatch between arguments and parameters when
inlining a constructor body.
The full arguments at the call site of a constructor body (always in a
generative constructor factory) and the parameters at inlining would
not agree on needing a 'box' for the constructor's closed-over mutated
variables (parameters and locals) when the box was needed only for
locals closed over in an assertion.
The fix is to make the condition for accepting a box match the test
for generating the box in the caller.
Bug: 45943
Change-Id: I3b056cb710ffac72bec6943809e04472a838e5bf
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/198741
Reviewed-by: Mayank Patke <fishythefish@google.com>
Commit-Queue: Stephen Adams <sra@google.com>
Stephen Adams
90127334ea