[all-commits] [llvm/llvm-project] 835951: [clang][deps] Enable calling `DepScanFile::getBuff...

[Jan Svoboda via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 835951325ec7aaf3336b19b53c9978d986e260df
      https://github.com/llvm/llvm-project/commit/835951325ec7aaf3336b19b53c9978d986e260df
  Author: Jan Svoboda <jan_svoboda at apple.com>
  Date:   2025-11-19 (Wed, 19 Nov 2025)

  Changed paths:
    M clang/lib/Tooling/DependencyScanning/DependencyScanningFilesystem.cpp
    M clang/unittests/Tooling/DependencyScanning/DependencyScanningFilesystemTest.cpp

  Log Message:
  -----------
  [clang][deps] Enable calling `DepScanFile::getBuffer()` repeatedly (#168789)

This PR makes it possible to call `getBuffer()` on `DepScanFile` (a
`llvm::vfs::File`) repeatedly. Previously, this function would return a
moved-from `unique_ptr`. This doesn't fix any existing bugs, I
discovered this while experimenting with the VFSs in the scanner. Note
that the returned instances of `llvm::MemoryBuffer` are non-owning and
share the underlying buffer storage.



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