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Code Issues Packages 1 Wiki Activity

Fix snapshot bug. (#267)

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Ryan Dahl 2018-06-18 15:55:36 +02:00 committed by GitHub
parent e6f51fd458
commit 064d889af0
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3 changed files with 17 additions and 1 deletions
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4
deno2/deno.cc
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@ -250,8 +250,10 @@ v8::StartupData MakeSnapshot(v8::StartupData* prev_natives_blob,
SerializeInternalFields, nullptr));
}
// Note that using kKeep here will cause segfaults. This is demoed in the
// "SnapshotBug" test case.
auto snapshot_blob =
creator->CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kKeep);
creator->CreateBlob(v8::SnapshotCreator::FunctionCodeHandling::kClear);
return snapshot_blob;
}

8
deno2/js/mock_runtime.js
View file

@ -67,3 +67,11 @@ function DoubleSubFails() {
deno.sub((channel, msg) => assert(false));
deno.sub((channel, msg) => assert(false));
}
// The following join has caused SnapshotBug to segfault when using kKeep.
[].join("");
function SnapshotBug() {
assert("1,2,3" === String([1, 2, 3]));
}

6
deno2/mock_runtime_test.cc
View file

@ -90,6 +90,12 @@ TEST(MockRuntimeTest, TypedArraySnapshots) {
deno_delete(d);
}
TEST(MockRuntimeTest, SnapshotBug) {
Deno* d = deno_new(nullptr, nullptr);
EXPECT_TRUE(deno_execute(d, "a.js", "SnapshotBug()"));
deno_delete(d);
}
int main(int argc, char** argv) {
testing::InitGoogleTest(&argc, argv);
deno_init();