[all-commits] [llvm/llvm-project] 6a5fe4: [lldb] Confine host shared cache reads to mapped s...

[Jonas Devlieghere via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6a5fe4bf112d2d60f7e03a233d486ff502ce1b8c
      https://github.com/llvm/llvm-project/commit/6a5fe4bf112d2d60f7e03a233d486ff502ce1b8c
  Author: Jonas Devlieghere <jonas at devlieghere.com>
  Date:   2026-06-26 (Fri, 26 Jun 2026)

  Changed paths:
    M lldb/source/Host/macosx/objcxx/HostInfoMacOSX.mm
    A lldb/test/API/macosx/shared-cache-host-memory/Makefile
    A lldb/test/API/macosx/shared-cache-host-memory/TestSharedCacheHostMemory.py
    A lldb/test/API/macosx/shared-cache-host-memory/main.c

  Log Message:
  -----------
  [lldb] Confine host shared cache reads to mapped segments (#205454)

When reading shared cache libraries out of lldb's own memory (the
default, eSymbolSharedCacheUseHostAndInferiorSharedCache), the dyld
introspection path built a plain DataExtractor spanning an image's
[minVmAddr, maxVmAddr). A shared cache image's segments may not be
contiguous: other images' data and unmapped guard pages may lie between
them.

Take advantage of the VirtualDataExtractor with a per-segment lookup
table instead, matching the map_shared_cache_binary_segments path, so
reads are confined to mapped segments.



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