[release/6.0-rc2][wasm][debugger] Fix reuse buffer #59775
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Tagging subscribers to 'arch-wasm': @lewing Issue DetailsBackport of #59773 to release/6.0 Customer ImpactDebugger is not working from VS. TestingTested manually on Blazor RiskLow risk, it's reseting the
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lewing
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Sep 29, 2021
lewing
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Retargeted to rc2 and approved per email discussion. |
lewing
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/azp run runtime |
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Azure Pipelines successfully started running 1 pipeline(s). |
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cc @Anipik |
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Backport of #59773 to release/6.0
When the wasm linear memory has to grow it invalidates existing views into the heap. To avoid this issue make sure to always create a new view into the heap for the debugger command immediately before use.
Customer Impact
Debugging will eventually fail once the runtime allocates enough memory to require growing the Wasm memory buffer.
Testing
Tested manually on Blazor
Tested on debugger-tests
Risk
Low risk, it's reseting the
_debugger_heap_bytesalways before the usage to avoid using an invalid pointer in the case that Module.HEAPU8.buffer is reallocated.