in pipe2, use pipe() rather than __syscall(SYS_pipe, ...) for fallback
[musl] / include / stddef.h
2013-01-19 Rich Felkeruse a common definition of NULL as 0L for C and C++
2012-12-05 Rich Felkeruse __builtin_offsetof to implement offsetof when possible
2011-02-12 Rich Felkerinitial check-in, version 0.5.0