SIG_BLOCK          40 src/pkg/runtime/os_darwin.h #define	SIG_BLOCK 1
SIG_BLOCK           7 src/pkg/runtime/os_netbsd.h #define SIG_BLOCK 1
SIG_BLOCK           7 src/pkg/runtime/os_openbsd.h #define SIG_BLOCK 1
SIG_BLOCK           7 src/pkg/runtime/os_solaris.h #define SIG_BLOCK 1