/posix-implementation.o: In function posix\_\_implementation\_\_raise\_posix\_error': posix-implementation.adb/posix-implementation.o: In function posix\_\_implementation\_\_check\_\_2': posix-implementation.adb/
OSX手册页介绍了POSIX_SPAWN_SETEXEC系统调用中的posix_spawn位:Apple Extension: If this bit is set, rather than returning to the caller,
posix_spawn(2) and posix_spawnp(2) will behave as a more featureful任何人都知道,在调用启用posix_spawn()的posix</