tree e7d50751370dbf73d877d8d498879b3b9f8827ab
parent ba57b261e36da2e92d8264073217f51445c4b5d2
author Nicholas Shahan <nshahan@google.com> 1715384954 +0000
committer Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> 1715384954 +0000

[ddc] Update some sourcemap locations

* Add special handling for String concatenations so the first string
  gets mapped correctly and work better in sound null safety.
* Update variable assignments to more consistently point to helpful
  locations, specifically when lowered from a prefix increment like
  `++x`.
* Run the sourcemap and stacktrace test suites with sound null safety.

Previously these suites were running with unsound null safety so more
operations were wrapped in function calls to check for null. Those calls
allowed for mode step or break points that hid some of the issues
addressed in this change.

Issue: https://github.com/dart-lang/sdk/issues/55692

Change-Id: Ibd887c8da64e72ab84c0698dd49b845abfaedbb8
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/366025
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Nicholas Shahan <nshahan@google.com>