Add fallback atexit implementation using template descrutors

Fixes https://github.com/harfbuzz/harfbuzz/issues/3197
3 years ago · bda3238c89
parent 9c27045158
commit bda3238c89
1 changed files with 2 additions and 1 deletions
--- a/src/hb.hh
+++ b/src/hb.hh
@ -449,7 +449,8 @@ static int HB_UNUSED _hb_errno = 0;
 #  ifdef HAVE_ATEXIT
 #    define hb_atexit atexit
 #  else
-#    error "atexit not found."
+     template <void (*function) (void)> struct hb_atexit_t { ~hb_atexit_t () { function (); } };
+#    define hb_atexit(f) static hb_atexit_t<f> _hb_atexit_##__LINE__;
 #  endif
 #endif