#17 using va_list in the st_thread under FreeBSD 10.1 should cause signal SIGBUS Error

[Bob Jiang]

I meet an strange issue under the FreeBSD 10.1 (only on X64 include Amd64 and intel x64), when I use any var-arguments relation function in a state-thread, simple like the printf("Hello State-Threads.\n"), It'll cause signal SIGBUS Error.

This issue should only occur on my two computre with FreeBSD 10.1 (X64 and Amd64), and never meet it on Mac OSX 10.10.1 (X64), CentOS 7.0 (X64), FreeBSD 10.1 (i386).

my test case is attached after, please help!