Bug 249064 – Web Inspector: Fix use-after-move in Inspector::InspectorDebuggerAgent::didCreateNativeExecutable()

• Component: Web Inspector
• Status: RESOLVED FIXED

[David Kilzer (:ddkilzer)]

Fix use-after-move in Inspector::InspectorDebuggerAgent::didCreateNativeExecutable() in Source/JavaScriptCore/inspector/agents/InspectorDebuggerAgent.cpp.

There are two places where `oldJITCodeRef` is used after being moved in a RELEASE_ASSERT() statement.

```
        [...]
        switch (kind) {
        case JSC::CodeForCall:
            ASSERT(!replacedThunk->callThunk);
            replacedThunk->callThunk = WTFMove(oldJITCodeRef);

            ASSERT(!replacedThunk->callArityThunk);
            replacedThunk->callArityThunk = WTFMove(oldArityJITCodeRef);

            RELEASE_ASSERT(oldJITCodeRef.code() == createJITCodeRef(vm.jitStubs->ctiNativeCall(vm)).code());  // Use-after-move of `oldJITCodeRef`.
            break;

        case JSC::CodeForConstruct:
            ASSERT(!replacedThunk->constructThunk);
            replacedThunk->constructThunk = WTFMove(oldJITCodeRef);

            ASSERT(!replacedThunk->constructArityThunk);
            replacedThunk->constructArityThunk = WTFMove(oldArityJITCodeRef);

            RELEASE_ASSERT(oldJITCodeRef.code() == createJITCodeRef(vm.jitStubs->ctiNativeConstruct(vm)).code());  // Use-after-move of `oldJITCodeRef`.
            break;
        }
        [...]
```

[Radar WebKit Bug Importer]

<rdar://problem/103204166>

[David Kilzer (:ddkilzer)]

Pull request: https://github.com/WebKit/WebKit/pull/7430

[EWS]

Committed 257755@main (9dbd0014372a): <https://commits.webkit.org/257755@main>

Reviewed commits have been landed. Closing PR #7430 and removing active labels.