Hello, the vasnprintf() now intentionally crashes on macOS 10.13 when the formatting string contains %n and is dynamically allocated, for more, see
http://lists.gnu.org/archive/html/bug-gnulib/2017-07/msg00056.html The latest version of gnulib contains a fix for this; however the current version of bison ships an older version of gnulib which makes bison crash every time it's run. Please update to an up-to-date version of gnulib to fix this issue on macOS 10.13. Best regards, Jiri
