diff options
Diffstat (limited to 'src/syscall')
| -rw-r--r-- | src/syscall/syscall_plan9.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/syscall/syscall_plan9.go b/src/syscall/syscall_plan9.go index 968782008d..7a130907dd 100644 --- a/src/syscall/syscall_plan9.go +++ b/src/syscall/syscall_plan9.go @@ -21,6 +21,15 @@ import ( const ImplementsGetwd = true const bitSize16 = 2 +// Errno is not used with GOOS plan9. +// +// It exists because because the Go 1 API contract +// (api/go1.txt's "pkg syscall, type Errno uintptr") +// says it exists, and so code in the ecosystem often +// assume it exists. This lets portable code be written +// without build-tagged files, using runtime.GOOS checks instead. +type Errno uintptr + // ErrorString implements Error's String method by returning itself. // // ErrorString values can be tested against error values using [errors.Is]. |