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[llvm][Support][Windows] Avoid crash calling remove_directories() #118677

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Merged
merged 3 commits into from
Dec 12, 2024
Merged

[llvm][Support][Windows] Avoid crash calling remove_directories() #118677

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bc5973d
[Windows] Avoid crash calling remove_directories()
slydiman Dec 4, 2024
3fa9272
Updated with the behavior of SHFileOperationW().
slydiman Dec 4, 2024
2cb0548
Refactored.
slydiman Dec 9, 2024
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31 changes: 26 additions & 5 deletions llvm/lib/Support/Windows/Path.inc
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Original file line number Diff line number Diff line change
Expand Up @@ -1387,12 +1387,33 @@ std::error_code remove_directories(const Twine &path, bool IgnoreErrors) {
Path16.push_back(0);
Path16.push_back(0);

SHFILEOPSTRUCTW shfos = {};
shfos.wFunc = FO_DELETE;
shfos.pFrom = Path16.data();
shfos.fFlags = FOF_NO_UI;
HRESULT HR =
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
if (SUCCEEDED(HR)) {
IFileOperation *FileOp = NULL;
HR = CoCreateInstance(CLSID_FileOperation, NULL, CLSCTX_ALL,
IID_PPV_ARGS(&FileOp));
if (SUCCEEDED(HR)) {
HR = FileOp->SetOperationFlags(FOF_NO_UI | FOFX_NOCOPYHOOKS);
if (SUCCEEDED(HR)) {
PIDLIST_ABSOLUTE PIDL = ILCreateFromPathW(Path16.data());
IShellItem *ShItem = NULL;
HR = SHCreateItemFromIDList(PIDL, IID_PPV_ARGS(&ShItem));
if (SUCCEEDED(HR)) {
HR = FileOp->DeleteItem(ShItem, NULL);
if (SUCCEEDED(HR)) {
HR = FileOp->PerformOperations();
}
ShItem->Release();
}
ILFree(PIDL);
}
FileOp->Release();
}
CoUninitialize();
}

int result = ::SHFileOperationW(&shfos);
int result = FAILED(HR) ? HRESULT_CODE(HR) : 0;
if (result != 0 && !IgnoreErrors)
return mapWindowsError(result);
return std::error_code();
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