tree 0cd450144dea39ac18f9944923504210252d6ba2
parent 9184100327c0baf768e53ffab88816270222006a
author Ömer Sinan Ağacan <omersa@google.com> 1738055999 -0800
committer Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> 1738055999 -0800

[beta][dart2wasm] Store exception/stacktrace for nested catch blocks.

The async state machine uses a single state in the heap to store the
current exception and stacktrace when within a catch block in case they
need to be rethrown. When catch blocks are nested this state can be
overwritten.

With this new change, before entering a new catch we store the current
value of the exception/stacktrace in a local that we can restore after
exiting the associated catch blocks. A wasm catch can represent multiple
Dart catch blocks so we only need to store the state per wasm catch.

Bug: https://github.com/dart-lang/sdk/issues/59981
Change-Id: I5ebb19e94ab05d5d8c7fc693924a303ca60b597a
Cherry-pick: https://dart-review.googlesource.com/c/sdk/+/405920
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/406260
Commit-Queue: Ömer Ağacan <omersa@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Commit-Queue: Alexander Thomas <athom@google.com>