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/usr/include/stab.h is in libc6-dev 2.24-11+deb9u4.

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#ifndef __GNU_STAB__

/* Indicate the GNU stab.h is in use.  */

#define __GNU_STAB__

#define __define_stab(NAME, CODE, STRING) NAME=CODE,

enum __stab_debug_code
{
#include <bits/stab.def>
LAST_UNUSED_STAB_CODE
};

#undef __define_stab

#endif /* __GNU_STAB_ */