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Matthew Dempsky c8adb3004f cmd/compile: enable zero-copy string->[]byte conversions
This CL enables the latent support for string->[]byte conversions
added go.dev/cl/520259.

One catch is that we need to make sure []byte("") evaluates to a
non-nil slice, even if "" is (nil, 0). This CL addresses that by
adding a "ptr != nil" check for OSTR2BYTESTMP, unless the NonNil flag
is set.

The existing uses of OSTR2BYTESTMP (which aren't concerned about
[]byte("") evaluating to nil) are updated to set this flag.

Fixes #2205.

Change-Id: I35a9cb16c164cd86156b7560915aba5108d8b523
Reviewed-on: https://go-review.googlesource.com/c/go/+/520395
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2023-08-17 19:37:36 +00:00
.github .github: fix templates with multiple labels 2023-07-31 18:28:27 +00:00
api encoding: add AppendEncode and AppendDecode 2023-08-17 16:23:42 +00:00
doc doc/go1.22: mention new sql.Null[T] 2023-08-16 02:02:38 +00:00
lib/time lib/time: update to 2023c/2023c 2023-05-03 20:14:11 +00:00
misc misc/wasm: switch default WASI runtime 2023-07-26 14:30:35 +00:00
src cmd/compile: enable zero-copy string->[]byte conversions 2023-08-17 19:37:36 +00:00
test cmd/compile: enable zero-copy string->[]byte conversions 2023-08-17 19:37:36 +00:00
.gitattributes
.gitignore internal/platform,cmd/dist: export the list of supported platforms 2023-06-22 19:44:52 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
go.env cmd/go: additional doc-inspired tests and bug fixes 2023-06-06 19:18:46 +00:00
LICENSE
PATENTS
README.md README: update from CC-BY-3.0 to CC-BY-4.0 2022-11-02 20:14:56 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +00:00

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