Jason Molenda a1a1a4ced9 [lldb] Handle an empty SBMemoryRegionInfo from scripted process (#115963) ...

A scripted process implementation might return an SBMemoryRegionInfo
object in its implementation of `get_memory_region_containing_address`
which will have an address 0 and size 0, without realizing the problems
this can cause. Several algorithms in lldb will try to iterate over the
MemoryRegions of the process, starting at address 0 and expecting to
iterate up to the highest vm address, stepping by the size of each
region, so a 0-length region will result in an infinite loop. Add a
check to Process::GetMemoryRegionInfo that rejects a MemoryRegion which
does not contain the requested address; a 0-length memory region will
therefor always be rejected.

rdar://139678032

2024-11-15 00:26:10 -08:00

242 KiB

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