tzfree            420 lib/time.in.h  _GL_FUNCDECL_SYS (tzfree, void, (timezone_t __tz));
tzfree            421 lib/time.in.h  _GL_CXXALIAS_SYS (tzfree, void, (timezone_t __tz));
tzfree            221 lib/time_rz.c            tzfree (old_tz);
tzfree            243 lib/time_rz.c        tzfree (tz);
tzfree            210 src/timefns.c      tzfree (tz);
tzfree            310 src/timefns.c        tzfree (old_tz);