/usr/include/glibmm-2.4/glibmm/private/thread_p.h is in libglibmm-2.4-dev 2.32.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | // -*- c++ -*-
// Generated by gtkmmproc -- DO NOT MODIFY!
#ifndef _GLIBMM_THREAD_P_H
#define _GLIBMM_THREAD_P_H
#ifndef GLIBMM_DISABLE_DEPRECATED
#endif // GLIBMM_DISABLE_DEPRECATED
#endif /* _GLIBMM_THREAD_P_H */
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