diff options
| author | Cuong Manh Le <cuong.manhle.vn@gmail.com> | 2022-09-14 11:47:08 +0700 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2022-09-21 14:06:15 +0000 |
| commit | 4b58b3077801b83c7ebc8eca23c7f63913d0778f (patch) | |
| tree | 433f4517fe6caa07ad4ac63e5c43e2c403fb4fa3 /doc | |
| parent | c70fd4b30aba5db2df7b5f6b0833c62b909f50eb (diff) | |
| download | go-git-4b58b3077801b83c7ebc8eca23c7f63913d0778f.tar.gz | |
spec: describe an edge case of slice-to-array conversions
Converting from nil slice to zero element array is ok, so explicitly
describe the behavior in the spec.
For #46505
Change-Id: I68f432deb6c21a7549bf7e870185fc62504b37f7
Reviewed-on: https://go-review.googlesource.com/c/go/+/430835
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/go_spec.html | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/doc/go_spec.html b/doc/go_spec.html index ff75190bb7..e2163b466d 100644 --- a/doc/go_spec.html +++ b/doc/go_spec.html @@ -1,6 +1,6 @@ <!--{ "Title": "The Go Programming Language Specification", - "Subtitle": "Version of September 8, 2022", + "Subtitle": "Version of September 21, 2022", "Path": "/ref/spec" }--> @@ -5542,10 +5542,10 @@ a <a href="#Run_time_panics">run-time panic</a> occurs. <pre> s := make([]byte, 2, 4) -a0 := ([0]byte)(s) -a1 := ([1]byte)(s[1:]) // a1[0] == s[1] -a2 := ([2]byte)(s) // a2[0] == s[0] -a4 := ([4]byte)(s) // panics: len([4]byte) > len(s) +a0 := [0]byte(s) +a1 := [1]byte(s[1:]) // a1[0] == s[1] +a2 := [2]byte(s) // a2[0] == s[0] +a4 := [4]byte(s) // panics: len([4]byte) > len(s) s0 := (*[0]byte)(s) // s0 != nil s1 := (*[1]byte)(s[1:]) // &s1[0] == &s[1] @@ -5553,8 +5553,9 @@ s2 := (*[2]byte)(s) // &s2[0] == &s[0] s4 := (*[4]byte)(s) // panics: len([4]byte) > len(s) var t []string -t0 := (*[0]string)(t) // t0 == nil -t1 := (*[1]string)(t) // panics: len([1]string) > len(t) +t0 := [0]string(t) // ok for nil slice t +t1 := (*[0]string)(t) // t1 == nil +t2 := (*[1]string)(t) // panics: len([1]string) > len(t) u := make([]byte, 0) u0 := (*[0]byte)(u) // u0 != nil |