I found bug in 1.8 ext/syck.  The problem is in gram.c and/or token.c.

gram.c is generated from bison and token.c is generated from re2c.  Any 
ideas where the gram.y and token.re files are?

BTW: ext/syck fails to compile when ASSERT() is enabled;  one of the 
issues is caught when ASSERT() is enable.  Seems strange to not have 
assertions enabled by default.

I should have a patch shortly.

Thanks,
Kurt