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[vm/reload] Ensure we only morph instantiated classes and enums.
Fixes https://github.com/dart-lang/sdk/issues/51835 TEST=IsolateReload_EnumInMainLibraryModified Change-Id: I4a8993cb44619a552866430b92f3941d49afbae6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/291051 Reviewed-by: Ryan Macnak <rmacnak@google.com> Commit-Queue: Alexander Aprelev <aam@google.com>
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@ -319,6 +319,7 @@ void InstanceMorpher::CreateMorphedCopies(Become* become) {
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// We also forward Enum.values. No filler is needed because arrays never
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// change shape.
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ASSERT(old_values.ptr() != new_values.ptr());
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become->Add(old_values, new_values);
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#if defined(DEBUG)
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@ -5196,6 +5196,35 @@ TEST_CASE(IsolateReload_ImplicitGetterWithLoadGuard) {
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EXPECT_STREQ("y: 3, z: 8208", SimpleInvokeStr(lib1, "main"));
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}
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// Regression test for https://github.com/dart-lang/sdk/issues/51835
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TEST_CASE(IsolateReload_EnumInMainLibraryModified) {
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const char* kScript =
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"enum Bar { bar }\n"
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"class Foo { int? a; toString() => 'foo'; }"
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"main() {\n"
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" return Foo().toString();\n"
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"}\n";
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Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
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EXPECT_VALID(lib);
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EXPECT_VALID(Dart_FinalizeAllClasses());
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EXPECT_STREQ("foo", SimpleInvokeStr(lib, "main"));
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const char* kReloadScript =
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"enum Bar { bar }\n"
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"class Foo { int? a; String? b; toString() => 'foo'; }"
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"main() {\n"
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" return Foo().toString();\n"
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"}\n";
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lib = TestCase::ReloadTestScript(kReloadScript);
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EXPECT_VALID(lib);
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Dart_SetFileModifiedCallback(NULL);
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// Modification of an imported library propagates to the importing library.
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EXPECT_STREQ("foo", SimpleInvokeStr(lib, "main"));
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}
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#endif // !defined(PRODUCT) && !defined(DART_PRECOMPILED_RUNTIME)
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} // namespace dart
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@ -610,6 +610,11 @@ void Class::MarkFieldBoxedDuringReload(ClassTable* class_table,
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bool Class::RequiresInstanceMorphing(ClassTable* class_table,
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const Class& replacement) const {
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if (!is_allocate_finalized()) {
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// No instances of this class exists on the heap - nothing to morph.
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return false;
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}
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if (replacement.is_enum_class()) {
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return true;
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}
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