)]}'
{
  "commit": "3a9b19c85b11c8a7eaa07013e052bb92d4dc8132",
  "tree": "cb28d1db08783b6470ecef9bec7f4b5cced5f16e",
  "parents": [
    "76786974b6400bb8455901b3bd653f9e0b21e431"
  ],
  "author": {
    "name": "Googler",
    "email": "noreply@google.com",
    "time": "Mon Aug 24 14:24:27 2026 -0700"
  },
  "committer": {
    "name": "Copybara-Service",
    "email": "copybara-worker@google.com",
    "time": "Mon Aug 24 14:26:21 2026 -0700"
  },
  "message": "Allow the include scanner to resolve generated (output-directory) toolchain headers.\n\nCurrently, we can\u0027t use a generated directory for the C++ toolchain sysroot because the include scanner will discard all of its headers.  The problem is that the scanner only resolves headers located under the output directory when they are a \"declared\" header (tracked in IncludeScanningHeaderData).\n\nThis CL teaches the scanner to treat the toolchain\u0027s own compiler_files as resolvable.\n\n  - CppCompileActionBuilder folds ccToolchain.getCompilerFiles() into the action\u0027s\n    prunable headers when include scanning is on, so the generated headers are\n    legitimate discoverable inputs.\n  - IncludeScanningHeaderData.Builder.addDeclaredHeaders() registers those\n    artifacts as declared headers, but only the generated (non-source) ones;\n    source-file sysroots already resolve via source-artifact lookup, so those\n    toolchains see no change to their declared-header map.\n  - CppCompileAction registers the prunable headers at both header-data build\n    sites.\n\nRegression tests added:\n  - CppCompileActionTest.discoverInputs_generatedPrunableHeader_isDeclaredAndDiscovered:\n    a generated prunable header is registered as a declared header on the action\u0027s\n    IncludeScanningHeaderData and is discovered (verifies the CppCompileAction wiring).\n  - IncludeScannerTest.addDeclaredHeaders_registersOnlyGeneratedHeaders:\n    addDeclaredHeaders registers generated headers but skips source headers.\n  - IncludeScannerTest.addDeclaredHeaders_generatedHeaderIsResolvedByScanner:\n    end-to-end -- the real include scanner prunes an undeclared generated header\n    but resolves it once addDeclaredHeaders registers it.\n\nRELNOTES: The C++ include scanner now properly resolves headers that are generated at build time and included as part of the toolchain.\nPiperOrigin-RevId: 970080035\nChange-Id: I267fcd63fae455c793a81c4cfde6c9f9c8c9449b\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "6e51326790e410c61003f70f269c64da37a30167",
      "old_mode": 33188,
      "old_path": "src/main/java/com/google/devtools/build/lib/rules/cpp/CppCompileAction.java",
      "new_id": "a483bba22141e0794b59f815c812adf8f3bd9891",
      "new_mode": 33188,
      "new_path": "src/main/java/com/google/devtools/build/lib/rules/cpp/CppCompileAction.java"
    },
    {
      "type": "modify",
      "old_id": "dff4bb6a2b7fd10ef28b0f9cff0bc8322280b94a",
      "old_mode": 33188,
      "old_path": "src/main/java/com/google/devtools/build/lib/rules/cpp/CppCompileActionBuilder.java",
      "new_id": "e7cbab54989cd534c41aeed324b6ef2f12a65a37",
      "new_mode": 33188,
      "new_path": "src/main/java/com/google/devtools/build/lib/rules/cpp/CppCompileActionBuilder.java"
    },
    {
      "type": "modify",
      "old_id": "1dd80207401b4251385d95725bf7685807cb3ea1",
      "old_mode": 33188,
      "old_path": "src/main/java/com/google/devtools/build/lib/rules/cpp/IncludeScanner.java",
      "new_id": "f6073a048ddec7a45bd0d8322a684dfe0287c9dd",
      "new_mode": 33188,
      "new_path": "src/main/java/com/google/devtools/build/lib/rules/cpp/IncludeScanner.java"
    }
  ]
}