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device: fix crash when unplugging certain devices on macOS

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Fixes #621
This commit is contained in:
rdb 2019-04-14 22:11:20 +02:00
parent 5530074945
commit 239dc40032
1 changed files with 4 additions and 1 deletions
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5
panda/src/device/ioKitInputDevice.cxx
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@ -22,8 +22,11 @@
#include "mouseButton.h"
static void removal_callback(void *ctx, IOReturn result, void *sender) {
IOKitInputDevice *input_device = (IOKitInputDevice *)ctx;
// We need to hold a reference to this because it may otherwise be destroyed
// during the call to on_remove().
PT(IOKitInputDevice) input_device = (IOKitInputDevice *)ctx;
nassertv(input_device != nullptr);
nassertv(input_device->test_ref_count_integrity());
input_device->on_remove();
}