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Potential fix for pull request finding

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Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
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RustDesk
2026-07-04 14:54:30 +08:00
committed by GitHub
parent 5cc7355dd2
commit ed9a423570
1 changed files with 7 additions and 6 deletions
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13
libs/clipboard/src/windows/wf_cliprdr.c
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@@ -421,16 +421,17 @@ static ULONG STDMETHODCALLTYPE CliprdrStream_Release(IStream *This)
static void take_req_fdata(wfClipboard *clipboard, char **data, ULONG *size) static void take_req_fdata(wfClipboard *clipboard, char **data, ULONG *size)
{ {
DWORD wait = WaitForSingleObject(clipboard->req_f_mutex, INFINITE); DWORD wait = WaitForSingleObject(clipboard->req_f_mutex, INFINITE);
if (wait != WAIT_OBJECT_0 && wait != WAIT_ABANDONED)
{
*data = NULL;
*size = 0;
return;
}
*data = clipboard->req_fdata; *data = clipboard->req_fdata;
*size = clipboard->req_fsize; *size = clipboard->req_fsize;
clipboard->req_fdata = NULL; clipboard->req_fdata = NULL;
clipboard->req_fsize = 0; clipboard->req_fsize = 0;
// WAIT_OBJECT_0 and WAIT_ABANDONED both mean the mutex is held; release only then. ReleaseMutex(clipboard->req_f_mutex);
// On WAIT_FAILED (e.g. the handle was closed during teardown) we do not own it, so
// calling ReleaseMutex would be undefined; the field access above then degrades to
// unsynchronized best effort, which is the pre-existing teardown behavior.
if (wait == WAIT_OBJECT_0 || wait == WAIT_ABANDONED)
ReleaseMutex(clipboard->req_f_mutex);
} }
static HRESULT STDMETHODCALLTYPE CliprdrStream_Read(IStream *This, void *pv, ULONG cb, static HRESULT STDMETHODCALLTYPE CliprdrStream_Read(IStream *This, void *pv, ULONG cb,