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File go1.16.changes of Package go1.16 (Revision a5a040160f6e934a8e1624b8d7b1c929)

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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

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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

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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

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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.

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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.

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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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