diff options
Diffstat (limited to 'libusb/os/poll_windows.c')
| -rw-r--r-- | libusb/os/poll_windows.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/libusb/os/poll_windows.c b/libusb/os/poll_windows.c index da97ca9..6bb91af 100644 --- a/libusb/os/poll_windows.c +++ b/libusb/os/poll_windows.c @@ -91,8 +91,11 @@ static BOOL (__stdcall *pCancelIoEx)(HANDLE, LPOVERLAPPED) = NULL; static inline void setup_cancel_io(void) { - pCancelIoEx = (BOOL (__stdcall *)(HANDLE,LPOVERLAPPED)) - GetProcAddress(GetModuleHandleA("KERNEL32"), "CancelIoEx"); + HMODULE hKernel32 = GetModuleHandleA("KERNEL32"); + if (hKernel32 != NULL) { + pCancelIoEx = (BOOL (__stdcall *)(HANDLE,LPOVERLAPPED)) + GetProcAddress(hKernel32, "CancelIoEx"); + } usbi_dbg("Will use CancelIo%s for I/O cancellation", Use_Duplicate_Handles?"":"Ex"); } |