VM/AOT/NNBD: language/operator/equality_covariant_test fails

[alexmarkov]

--- Command "vm_compile_to_kernel []" (took 03.000314s):
DART_CONFIGURATION=ReleaseX64 /b/s/w/ir/pkg/vm/tool/gen_kernel --aot --platform=out/ReleaseX64/vm_platform_strong.dill -o /b/s/w/ir/out/ReleaseX64/generated_compilations/dartkp/tests_language_operator_equality_covariant_test/out.dill /b/s/w/ir/tests/language/operator/equality_covariant_test.dart --enable-experiment=non-nullable --packages=/b/s/w/ir/.packages -Ddart.vm.product=false -Ddart.developer.causal_async_stacks=true --enable-asserts --no-sound-null-safety

exit code:
0

--- Command "precompiler" (took 06.000950s):
DART_CONFIGURATION=ReleaseX64 out/ReleaseX64/gen_snapshot --enable-experiment=non-nullable --snapshot-kind=app-aot-assembly --assembly=/b/s/w/ir/out/ReleaseX64/generated_compilations/dartkp/tests_language_operator_equality_covariant_test/out.S --enable_asserts --no-sound-null-safety --enable-experiment=non-nullable --ignore-unrecognized-flags --packages=/b/s/w/ir/.packages /b/s/w/ir/out/ReleaseX64/generated_compilations/dartkp/tests_language_operator_equality_covariant_test/out.dill

exit code:
0

--- Command "remove_kernel_file" (took 6ms):
DART_CONFIGURATION=ReleaseX64 rm /b/s/w/ir/out/ReleaseX64/generated_compilations/dartkp/tests_language_operator_equality_covariant_test/out.dill

exit code:
0

--- Command "assemble" (took 01.000862s):
DART_CONFIGURATION=ReleaseX64 gcc -m64 -shared -nostdlib -o /b/s/w/ir/out/ReleaseX64/generated_compilations/dartkp/tests_language_operator_equality_covariant_test/out.aotsnapshot /b/s/w/ir/out/ReleaseX64/generated_compilations/dartkp/tests_language_operator_equality_covariant_test/out.S

exit code:
0

--- Command "remove_assembly" (took 20ms):
DART_CONFIGURATION=ReleaseX64 rm /b/s/w/ir/out/ReleaseX64/generated_compilations/dartkp/tests_language_operator_equality_covariant_test/out.S

exit code:
0

--- Command "vm" (took 40ms):
DART_CONFIGURATION=ReleaseX64 out/ReleaseX64/dart_precompiled_runtime --enable_asserts --no-sound-null-safety --enable-experiment=non-nullable --ignore-unrecognized-flags --packages=/b/s/w/ir/.packages /b/s/w/ir/out/ReleaseX64/generated_compilations/dartkp/tests_language_operator_equality_covariant_test/out.aotsnapshot

exit code:
255

stderr:
Unhandled exception:
Attempt to execute code removed by Dart AOT compiler (TFA)
#0      main (file:///b/s/w/ir/tests/language/operator/equality_covariant_test.dart)
#1      _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:301)
#2      _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168)

--- Re-run this test:
python tools/test.py -n dartkp-weak-asserts-linux-release-x64 language/operator/equality_covariant_test

Failure happens both in strong and weak modes, but only in AOT.