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weekly.2012-02-22
R=golang-dev, r, bradfitz CC=golang-dev https://golang.org/cl/5698043
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Andrew Gerrand
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1
.hgtags
1
.hgtags
@ -105,4 +105,3 @@ b4a91b6933748db1a7150c06a1b55ad506e52906 weekly.2011-11-18
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1107a7d3cb075836387adfab5ce56d1b3e56637d weekly.2012-01-27
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52ba9506bd993663a0a033c2bd68699e25d061ab weekly.2012-02-07
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43cf9b39b6477d3144b0353ee91096e55db6107f weekly.2012-02-14
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43cf9b39b6477d3144b0353ee91096e55db6107f weekly
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@ -14,6 +14,125 @@ hg pull
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hg update weekly.<i>YYYY-MM-DD</i>
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</pre>
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<h2 id="2012-02-22">2012-02-22</h2>
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<pre>
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This weekly snapshot includes changes to the os and runtime packages.
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This should be the last of the significant incompatible changes before Go 1.
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There are no longer error constants such as EINVAL in the os package, since the
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set of values varied with the underlying operating system. There are new
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portable functions like IsPermission to test common error properties, plus a
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few new error values with more Go-like names, such as ErrPermission and
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ErrNoEnv.
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The os.Getenverror function has been removed. To distinguish between a
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non-existent environment variable and an empty string, use os.Environ or
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syscall.Getenv.
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The Process.Wait method has dropped its option argument and the associated
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constants are gone from the package. Also, the function Wait is gone; only the
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method of the Process type persists.
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The non-portable Waitmsg type has been replaced with the portable ProcessState.
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Much of the API exported by package runtime has been removed in favor of
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functionality provided by other packages. Code using the runtime.Type
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interface or its specific concrete type implementations should now use package
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reflect. Code using runtime.Semacquire or runtime.Semrelease should use
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channels or the abstractions in package sync.
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The runtime.Alloc, runtime.Free, and runtime.Lookup functions, an unsafe API
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created for debugging the memory allocator, have no replacement.
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The runtime.Cgocalls and runtime.Goroutines functions have been renamed to
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runtime.NumCgoCall and runtime.NumGoroutine.
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The "go fix" command will update code to accommodate most of these changes.
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Other changes:
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* 5c, 6c, 8c, 6g, 8g: correct boundary checking (thanks Shenghou Ma).
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* 5g, 6g, 8g: flush modified globals aggressively.
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* 8a, 8l: add EMMS instruction (thanks Evan Shaw).
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* bufio: don't return errors from good Peeks.
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* build: add make.bash --no-clean option,
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improve Windows support.
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* builder: reuse existing workspace if possible (thanks Shenghou Ma),
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update for os.Wait changes.
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* bytes: document Compare/Equal semantics for nil arguments, and add tests.
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* cgo: fix definition of opaque types (thanks Gustavo Niemeyer).
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* cmd/api: record return type of functions for variable typecheck (thanks Rémy Oudompheng).
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* cmd/cgo: bug fixes.
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* cmd/dist: add clang specific -Wno options (thanks Bobby Powers),
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fix install cmd/5g on non-arm system,
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fix pprof permissions (thanks Bobby Powers),
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make dir check in defaulttarg() more robust (thanks Shenghou Ma),
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use correct package target when cross-compiling (thanks Alex Brainman).
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* cmd/gc: correctly typecheck expression lists in returns (thanks Rémy Oudompheng),
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don't believe that variables mentioned 256 times are unused (thanks Rémy Oudompheng),
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error on constant shift overflows (thanks Rémy Oudompheng),
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fix comparison of struct with _ field.
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fix error for floating-point constant %,
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new, less strict bool rules.
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* cmd/go: add tool -n flag,
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go test -i correctly handle cgo packages (thanks Shenghou Ma).
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* codereview: fix submit message for new clone URL (thanks Shenghou Ma).
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* database/sql/driver: API cleanups.
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* doc: many fixes and adjustments.
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* encoding/gob: cache engine for user type, not base type,
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catch internal error when it happens,
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fix mutually recursive slices of structs.
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* encoding/json: ignore anonymous fields.
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* go/doc: return Examples in name order.
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* go/parser: imaginary constants and ! may start an expression.
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* go/printer, gofmt: improved comma placement.
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* go/printer: don't lose relevant parentheses when rewriting selector expressions.
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* godoc: adjust line height in pre blocks,
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don't print spurious suggestion when running "go doc foo",
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fix absolute->relative mapping,
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fix tag mismatch validation errors (thanks Scott Lawrence),
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import example code support,
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support flat directory view again.
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* html/template: add Clone and AddParseTree,
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don't indirect past a Stringer,
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minor tweak to docs to improve HTML typography.
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* image: add Decode example.
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* ld: add NOPTRBSS for large, pointer-free uninitialized data.
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* math/rand: Intn etc. should panic if their argument is <= 0.
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* misc/dist/windows: distro builder updates (thanks Joe Poirier).
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* misc/goplay: remain in work directory, build in temp directory.
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* net, os, syscall: delete os.EPLAN9 (thanks Mikio Hara).
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* net/http: add optional Server.TLSConfig field.
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* net/smtp: use EHLO then HELO.
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* net/textproto: accept bad MIME headers as browsers do.
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* net/url: regularise receiver names.
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* net: make LocalAddr on multicast return group address (thanks Mikio Hara),
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make parseProcNetIGMP more robust (thanks Mikio Hara),
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more selfConnect debugging: panic if ra == nil in internetSocket,
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panic if sockaddrToTCP returns nil incorrectly,
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other miscellaneous fixes.
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* path, path/filepath: polish documentation (thanks Rémy Oudompheng).
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* pprof: add Profile type.
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* runtime: avoid malloc during malloc,
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define NSIG to fix plan 9 build (thanks David du Colombier),
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fix FreeBSD signal handling around thread creation (thanks Devon H. O'Dell),
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goroutine profile, stack dumps,
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implement runtime.osyield on FreeBSD 386, amd64 (thanks Devon H. O'Dell),
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permit default behaviour of SIGTSTP, SIGTTIN, SIGTTOU,
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release unused memory to the OS (thanks Sébastien Paolacci),
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remove an obsolete file (thanks Mikio Hara).
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* spec: make all comparison results untyped bool,
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refine the wording about variables in type switches,
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struct comparison only compares non-blank fields.
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* syscall: Make Pdeathsig type Signal in SysProcAttr on Linux (thanks Albert Strasheim),
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fix bounds check in Error,
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force Windows to always use US English error messages (thanks Shenghou Ma).
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* test: migrated to new go-based testing framework.
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* text/template: evaluate function fields.
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* time: use Go distribution zoneinfo if system copy not found.
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</pre>
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<h2 id="2012-02-14">2012-02-14</h2>
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<pre>
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