Workaround bug in EvtFormatMessage #105636
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Tagging subscribers to this area: @dotnet/area-system-diagnostics-eventlog |
jkoritzinsky
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Jul 29, 2024
carlossanlop
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Jul 29, 2024
src/libraries/System.Diagnostics.EventLog/src/System/Diagnostics/Reader/NativeWrapper.cs
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stephentoub
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src/libraries/System.Diagnostics.EventLog/src/System/Diagnostics/Reader/NativeWrapper.cs
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This was referenced Jul 30, 2024
stephentoub
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Jul 30, 2024
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Corrected some mismatched active issues, filed a new active issue for a test crash in linq.expressions. With that BA is passing. |
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/backport to release/8.0-staging |
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Started backporting to release/8.0-staging: https://github.com/dotnet/runtime/actions/runs/10183531351 |
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Fix #100198.
This Windows API will still try to write to a buffer if you tell it the buffer is 0 length and the string you're reading happens to be 0 length. We previously avoided an AV here because we were passing a StringBuilder, but that changed with the interop generator refactoring which passed
null. Avoid the bug that by passing in a 1-character buffer rather than null.I've tested manually using the file provided in the issue repro. I'll poke around a bit to see if I can manage to get a regression test for this without using the customer file but for now just sharing the fix.