| commit | 2d5c46c87107e1a3cf027ef300fff1919c8cf50a | [log] [tgz] |
|---|---|---|
| author | Alexander Markov <alexmarkov@google.com> | Mon Mar 20 08:30:36 2023 |
| committer | Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> | Mon Mar 20 08:30:36 2023 |
| tree | 1cba9cfb4faa585fc226d2fd0fccc0a10eff3ecc | |
| parent | 10f53cb4c628fe1fbfd4e12f3d4470c8684b0e85 [diff] |
[vm/compiler] Do not assume that LoadField is performed from a record of a compatible shape
Compiler can see an unreachable code like this:
v1 <- Constant(Record (C, C))
if v1 is (C, C, C) {
v2 <- LoadField (v1.$3)
}
So it should check that record type of the receiver has enough fields
before querying field type in LoadField.
TEST=co19/LanguageFeatures/Patterns/matching_record_*
Fixes https://github.com/dart-lang/sdk/issues/51767
Issue https://github.com/dart-lang/sdk/issues/49755
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-nnbd-linux-release-x64-try
Change-Id: Iac42c8edf3d22dce0061b6d75e8bdf51b7bf88e6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/289540
Auto-Submit: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
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