Process on Windows reports QProcess::CrashExit if the process exits normally with exit code < 0

Below code leads to various false-positive crash reports throughout Qt Creator and various auto-tests (for example qtquick1/qmlvisual launching qmlviewer).

void QProcessPrivate::findExitCode()
{
....
//### for now we assume a crash if exit code is less than -1 or the magic number
crashed = (exitCode == 0xf291 || (int)exitCode < 0);

This is apparently so since various Windows exceptions cause negative exit codes. Is this fixable?