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154860ff17
This field is a zero length array and has little use. Since Go 1.5, trailing zero-length arrays take up space. Both syscall.UnixRights() and syscall.ParseSocketControlMessage() depend on being able to do an unsafe cast of socket control message data to Cmsghdr this is only safe if the socket control message data is greater than or equal to the size of Cmsghdr. Since control message data that is equal in size to Cmsghdr without X__cmsg_data is a valid socket control message, we must remove X__cmsg_data or not perform the unsafe cast. Removing X__cmsg_data will prevent Go code that uses X__cmsg_data from compiling, but removing the unsafe cast will cause Go code that uses X__cmsg_data to fail or exhibit undefined behavior at runtime. It was therefore decided that removing X__cmsg_data was the better option. Fixes #17649 Change-Id: I39f323f978eca09d62da5785c5c5c9c7cbdf8c31 Reviewed-on: https://go-review.googlesource.com/32319 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Russ Cox <rsc@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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| .. | ||
| except.txt | ||
| go1.1.txt | ||
| go1.2.txt | ||
| go1.3.txt | ||
| go1.4.txt | ||
| go1.5.txt | ||
| go1.6.txt | ||
| go1.7.txt | ||
| go1.txt | ||
| next.txt | ||
| README | ||
Files in this directory are data for Go's API checker ("go tool api", in src/cmd/api).
Each file is a list of API features, one per line.
go1.txt (and similarly named files) are frozen once a version has been
shipped. Each file adds new lines but does not remove any.
except.txt lists features that may disappear without breaking true
compatibility.
next.txt is the only file intended to be mutated. It's a list of
features that may be added to the next version. It only affects
warning output from the go api tool.