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fix: explicitly warn for infinite loops discovered only via enableInfiniteRenderLoopDetection - #36195
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rickhanlonii
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Apr 2, 2026
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I need some tests to understand what wasn't covered before and what's covered now |
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@rickhanlonii, I've added a test that reproduces the previously failing scenario. Please see the updated summary as well. |
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| it('warns instead of throwing when infinite Suspense ping loop is detected via enableInfiniteRenderLoopDetection during commit phase', async () => { | ||
| if (!__DEV__ || gate(flags => !flags.enableInfiniteRenderLoopDetection)) { |
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Not at the current state. If we use @gate pragma, then the test has to fail when the gating conditions are not met. It fails, but because of the infinite loop, which is prevented by Jest, and such failure is not considered as "good" failure.
jackpope
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Apr 13, 2026
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…initeRenderLoopDetection (#36195) My change in #35999 did not cover all possible scenarios for emitting a warning, instead of throwing. The instrumentation not only enables the identification for the infinite loop via execution context checks, but also adds the check to more lifecycle methods, like `markRootPinged` and `markRootUpdated`. See the newly added test to understand a potential scenario. Before the fix, the error would be thrown: <img width="1192" height="424" alt="Screenshot 2026-04-08 at 17 21 51" src="https://github.com/user-attachments/assets/ba8ea379-0271-4938-ae45-e37ee75e1963" /> With the current changes, the warning is logged with `console.error`. DiffTrain build for [fef12a0](fef12a0)
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…initeRenderLoopDetection (#36195) My change in #35999 did not cover all possible scenarios for emitting a warning, instead of throwing. The instrumentation not only enables the identification for the infinite loop via execution context checks, but also adds the check to more lifecycle methods, like `markRootPinged` and `markRootUpdated`. See the newly added test to understand a potential scenario. Before the fix, the error would be thrown: <img width="1192" height="424" alt="Screenshot 2026-04-08 at 17 21 51" src="https://github.com/user-attachments/assets/ba8ea379-0271-4938-ae45-e37ee75e1963" /> With the current changes, the warning is logged with `console.error`. DiffTrain build for [fef12a0](fef12a0)
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My change in #35999 did not cover all possible scenarios for emitting a warning, instead of throwing.
The instrumentation not only enables the identification for the infinite loop via execution context checks, but also adds the check to more lifecycle methods, like
markRootPingedandmarkRootUpdated.See the newly added test to understand a potential scenario. Before the fix, the error would be thrown:
With the current changes, the warning is logged with
console.error.