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go1.16.18712
go1.16.changes
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File go1.16.changes of Package go1.16.18712
------------------------------------------------------------------- Fri Mar 12 01:27:53 UTC 2021 - Jeff Kowalczyk <jkowalczyk@suse.com> - go1.16.2 (released 2021-03-11) includes fixes to cgo, the compiler, linker, the go command, and the syscall and time packages. Refs boo#1182345 go1.16 release tracking * go#44793 cmd/go: mod tidy should ignore missing standard library packages * go#44746 cmd/go: improve error message when outside a module from "working directory is not part of a module" * go#44676 cmd/go: warning message when getting a retracted module version is missing a trailing newline * go#44659 runtime: marked free object in span * go#44647 cmd/go: "malformed import path" in Go 1.16 for packages with path elements containing a leading dot * go#44638 cmd/link: runtime crash, unexpected fault address 0xffffffffffffffff, h2_bundle.go, when using plugin * go#44618 time: LoadLocationFromTZData with slim tzdata uses incorrect zone * go#44593 syscall & x/sys/windows: buffer overflow in GetQueuedCompletionStatus * go#44498 cmd/go: 'go mod edit -exclude' erroneously rejects '+incompatible' versions * go#44496 cmd/go: malformed module path with retract v2+ * go#44464 cmd/compile: ICE on deferred call to syscall.LazyDLL.Call * go#44462 x/tools/go/analysis, syscall: ptrace redeclared in this block * go#44433 cmd/compile: Compiler regression in Go 1.16 - internal compiler error: child dcl collision on symbol * go#44402 doc: Broken image in readme * go#44358 cmd/compile: internal compiler error: Value live at entry. It shouldn't be. * go#44346 runtime/cgo: cannot build with -Wsign-compare ------------------------------------------------------------------- Wed Mar 10 17:33:27 UTC 2021 - Jeff Kowalczyk <jkowalczyk@suse.com> - go1.16.1 (released 2021-03-10) includes security fixes to the archive/zip and encoding/xml packages. CVE-2021-27918 CVE-2021-27919 Refs boo#1182345 go1.16 release tracking * boo#1183333 CVE-2021-27918 * go#44915 encoding/xml: infinite loop when using `xml.NewTokenDecoder` with a custom `TokenReader` * boo#1183334 CVE-2021-27919 * go#44917 archive/zip: can panic when calling Reader.Open ------------------------------------------------------------------- Thu Feb 18 23:21:47 UTC 2021 - Jeff Kowalczyk <jkowalczyk@suse.com> - gcc6-go.patch fix typo go-7 to go-6 for bootstrap on SLE-12 gcc6 ------------------------------------------------------------------- Tue Feb 16 22:42:14 UTC 2021 - Jeff Kowalczyk <jkowalczyk@suse.com> - go1.16 (released 2021-02-16) Go 1.16 is a major release of Go. go1.16.x minor releases will be provided through February 2022. https://github.com/golang/go/wiki/Go-Release-Cycle Most changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility. We expect almost all Go programs to continue to compile and run as before. Refs boo#1182345 go1.16 release tracking * See release notes https://golang.org/doc/go1.16. Excerpts relevant to OBS environment and for SUSE/openSUSE follow: * Module-aware mode is enabled by default, regardless of whether a go.mod file is present in the current working directory or a parent directory. More precisely, the GO111MODULE environment variable now defaults to on. To switch to the previous behavior, set GO111MODULE to auto. * Build commands like go build and go test no longer modify go.mod and go.sum by default. Instead, they report an error if a module requirement or checksum needs to be added or updated (as if the -mod=readonly flag were used). Module requirements and sums may be adjusted with go mod tidy or go get. * go install now accepts arguments with version suffixes (for example, go install example.com/cmd@v1.0.0). This causes go install to build and install packages in module-aware mode, ignoring the go.mod file in the current directory or any parent directory, if there is one. This is useful for installing executables without affecting the dependencies of the main module. * go install, with or without a version suffix (as described above), is now the recommended way to build and install packages in module mode. go get should be used with the -d flag to adjust the current module's dependencies without building packages, and use of go get to build and install packages is deprecated. In a future release, the -d flag will always be enabled. * retract directives may now be used in a go.mod file to indicate that certain published versions of the module should not be used by other modules. A module author may retract a version after a severe problem is discovered or if the version was published unintentionally. * The go mod vendor and go mod tidy subcommands now accept the -e flag, which instructs them to proceed despite errors in resolving missing packages. * The go command now ignores requirements on module versions excluded by exclude directives in the main module. Previously, the go command used the next version higher than an excluded version, but that version could change over time, resulting in non-reproducible builds. * In module mode, the go command now disallows import paths that include non-ASCII characters or path elements with a leading dot character (.). Module paths with these characters were already disallowed (see Module paths and versions), so this change affects only paths within module subdirectories. * The go command now supports including static files and file trees as part of the final executable, using the new //go:embed directive. See the documentation for the new embed package for details. * When using go test, a test that calls os.Exit(0) during execution of a test function will now be considered to fail. This will help catch cases in which a test calls code that calls os.Exit(0) and thereby stops running all future tests. If a TestMain function calls os.Exit(0) that is still considered to be a passing test. * go test reports an error when the -c or -i flags are used together with unknown flags. Normally, unknown flags are passed to tests, but when -c or -i are used, tests are not run. * The go get -insecure flag is deprecated and will be removed in a future version. This flag permits fetching from repositories and resolving custom domains using insecure schemes such as HTTP, and also bypasses module sum validation using the checksum database. To permit the use of insecure schemes, use the GOINSECURE environment variable instead. To bypass module sum validation, use GOPRIVATE or GONOSUMDB. See go help environment for details. * go get example.com/mod@patch now requires that some version of example.com/mod already be required by the main module. (However, go get -u=patch continues to patch even newly-added dependencies.) * GOVCS is a new environment variable that limits which version control tools the go command may use to download source code. This mitigates security issues with tools that are typically used in trusted, authenticated environments. By default, git and hg may be used to download code from any repository. svn, bzr, and fossil may only be used to download code from repositories with module paths or package paths matching patterns in the GOPRIVATE environment variable. See go help vcs for details. * When the main module's go.mod file declares go 1.16 or higher, the all package pattern now matches only those packages that are transitively imported by a package or test found in the main module. (Packages imported by tests of packages imported by the main module are no longer included.) This is the same set of packages retained by go mod vendor since Go 1.11. * When the -toolexec build flag is specified to use a program when invoking toolchain programs like compile or asm, the environment variable TOOLEXEC_IMPORTPATH is now set to the import path of the package being built. * The -i flag accepted by go build, go install, and go test is now deprecated. The -i flag instructs the go command to install packages imported by packages named on the command line. Since the build cache was introduced in Go 1.10, the -i flag no longer has a significant effect on build times, and it causes errors when the install directory is not writable. * When the -export flag is specified, the BuildID field is now set to the build ID of the compiled package. This is equivalent to running go tool buildid on go list -exported -f {{.Export}}, but without the extra step. * The -overlay flag specifies a JSON configuration file containing a set of file path replacements. The -overlay flag may be used with all build commands and go mod subcommands. It is primarily intended to be used by editor tooling such as gopls to understand the effects of unsaved changes to source files. The config file maps actual file paths to replacement file paths and the go command and its builds will run as if the actual file paths exist with the contents given by the replacement file paths, or don't exist if the replacement file paths are empty. * The cgo tool will no longer try to translate C struct bitfields into Go struct fields, even if their size can be represented in Go. The order in which C bitfields appear in memory is implementation dependent, so in some cases the cgo tool produced results that were silently incorrect. * The linux/riscv64 port now supports cgo and -buildmode=pie. This release also includes performance optimizations and code generation improvements for RISC-V. * The new runtime/metrics package introduces a stable interface for reading implementation-defined metrics from the Go runtime. It supersedes existing functions like runtime.ReadMemStats and debug.GCStats and is significantly more general and efficient. See the package documentation for more details. * Setting the GODEBUG environment variable to inittrace=1 now causes the runtime to emit a single line to standard error for each package init, summarizing its execution time and memory allocation. This trace can be used to find bottlenecks or regressions in Go startup performance. The GODEBUG documentation describes the format. * On Linux, the runtime now defaults to releasing memory to the operating system promptly (using MADV_DONTNEED), rather than lazily when the operating system is under memory pressure (using MADV_FREE). This means process-level memory statistics like RSS will more accurately reflect the amount of physical memory being used by Go processes. Systems that are currently using GODEBUG=madvdontneed=1 to improve memory monitoring behavior no longer need to set this environment variable. * Go 1.16 fixes a discrepancy between the race detector and the Go memory model. The race detector now more precisely follows the channel synchronization rules of the memory model. As a result, the detector may now report races it previously missed. * linker: This release includes additional improvements to the Go linker, reducing linker resource usage (both time and memory) and improving code robustness/maintainability. These changes form the second half of a two-release project to modernize the Go linker. * The linker changes in 1.16 extend the 1.15 improvements to all supported architecture/OS combinations (the 1.15 performance improvements were primarily focused on ELF-based OSes and amd64 architectures). For a representative set of large Go programs, linking is 20-25% faster than 1.15 and requires 5-15% less memory on average for linux/amd64, with larger improvements for other architectures and OSes. Most binaries are also smaller as a result of more aggressive symbol pruning. * The new embed package provides access to files embedded in the program during compilation using the new //go:embed directive. * The new io/fs package defines the fs.FS interface, an abstraction for read-only trees of files. The standard library packages have been adapted to make use of the interface as appropriate. * For testing code that implements fs.FS, the new testing/fstest package provides a TestFS function that checks for and reports common mistakes. It also provides a simple in-memory file system implementation, MapFS, which can be useful for testing code that accepts fs.FS implementations. * syscall: On Linux, Setgid, Setuid, and related calls are now implemented. Previously, they returned an syscall.EOPNOTSUPP error. On Linux, the new functions AllThreadsSyscall and AllThreadsSyscall6 may be used to make a system call on all Go threads in the process. These functions may only be used by programs that do not use cgo; if a program uses cgo, they will always return syscall.ENOTSUP. * time/tzdata: The slim timezone data format is now used for the timezone database in $GOROOT/lib/time/zoneinfo.zip and the embedded copy in this package. This reduces the size of the timezone database by about 350 KB. ------------------------------------------------------------------- Thu Jan 28 17:20:09 UTC 2021 - Jeff Kowalczyk <jkowalczyk@suse.com> - go1.16rc1 (released 2021-01-28) is a release candidate of go1.16 cut from the master branch at the revision tagged go1.16rc1. ------------------------------------------------------------------- Thu Dec 17 23:00:42 UTC 2020 - Jeff Kowalczyk <jkowalczyk@suse.com> - go1.16beta1 (released 2020-12-08) is a beta version of go1.16 cut from the master branch at the revision tagged go1.16beta1.
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