Fix a set of minor DAC bugs I encountered recently #100031
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In src/coreclr/debug/daccess/dacdbiimpl.cpp - If g_pDebugger is NULL, produce an error, or NULL result instead of an invalid memory access. - This caused problems when debugging with a debug version of the DAC In src/coreclr/debug/di/module.cpp - Avoid attempting to get the MapAddr if the number of entries in the map is 0, as it may not yet be fully initialized and attempting to call the GetMapAddr function may cause an ASSERT in debug/checked versions of the DAC In src/coreclr/utilcode/collections.cpp - If a CHashTable is not fully initialized, or is in an intermediate state, its possible for the linked list to have an infinite cycle. Tweak the iteration here under the DAC to stop - This is known to cause stack walking to loop infinitely in the debugger when debugging a runtime which has suspended at a non-safe point
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Tagging subscribers to this area: @tommcdon |
mikem8361
approved these changes
Mar 20, 2024
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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/9946790183 |
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In src/coreclr/debug/daccess/dacdbiimpl.cpp
g_pDebuggeris NULL, produce an error, or NULL result instead of an invalid memory access.In src/coreclr/debug/di/module.cpp
MapAddrif the number of entries in the map is 0, as it may not yet be fully initialized and attempting to call theGetMapAddrfunction may cause an ASSERT in debug/checked versions of the DACIn src/coreclr/utilcode/collections.cpp
CHashTableis not fully initialized, or is in an intermediate state, its possible for the linked list to have an infinite cycle. Tweak the iteration here under the DAC to stop