See golang.org/s/go14customimport for design.
Added case to deps_test to allow go/build to import regexp.
Not a new dependency, because go/build already imports go/doc
which imports regexp.
Fixes#7453.
LGTM=r
R=r, josharian
CC=golang-codereviews
https://golang.org/cl/124940043
It's unclear why we do this broken double-checked locking.
The mutex is not held for the whole duration of CPU profiling.
Fixes#8365.
LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://golang.org/cl/116290043
This function does not have a declaration/prototype in a.h, and it is used only
in buf.c, so it is local to it and thus can be marked as private by adding
'static' to it.
LGTM=iant
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/122300043
misc/cgo/testgodefs was added by revision d1cf884a594f, but not
add to run.bash.
LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/129760044
This makes GCC behavior (and cgo build failures) deterministic.
Fixes#8487.
Ran this shell command on linux/amd64 (Ubuntu 12.04) before and
after this change:
for x in `seq 100`; do
go tool cgo -debug-gcc=true issue8441.go 2>&1 | md5sum
done | sort | uniq -c
Before:
67 2cdcb8c7c4e290f7d9009abc581b83dd -
10 9a55390df94f7cec6d810f3e20590789 -
10 acfad22140d43d9b9517bbc5dfc3c0df -
13 c337f8fee2304b3a8e3158a4362d8698 -
After:
100 785c316cbcbcd50896695050e2fa23c1 -
LGTM=minux, iant
R=golang-codereviews, bradfitz, minux, iant
CC=golang-codereviews
https://golang.org/cl/126990043
Credit to Rémy for finding and writing test case.
Fixes#8325.
LGTM=r
R=golang-codereviews, r
CC=dave, golang-codereviews, iant, remyoudompheng
https://golang.org/cl/124950043
The >>1 shift needs to happen before converting to int32, otherwise
large values will decode with an incorrect sign bit.
The <<31 shift can happen before or after, but before is consistent
with liblink and the go12symtab doc.
Bug demo at http://play.golang.org/p/jLrhPUakIu
LGTM=rsc
R=golang-codereviews, minux, rsc
CC=golang-codereviews
https://golang.org/cl/119630043
When formatting time zone offsets with seconds using the stdISO8601Colon
and stdNumColon layouts, the colon was missing between the hour and minute
parts.
Fixes#8497.
LGTM=r
R=golang-codereviews, iant, gobot, r
CC=golang-codereviews
https://golang.org/cl/126840043
On OS X 10.10 Yosemite, if you have a directory that can be returned
in a single getdirentries64 call (for example, a directory with one file),
and you read from the directory at EOF twice, you get EOF both times:
fd = open("dir")
getdirentries64(fd) returns data
getdirentries64(fd) returns 0 (EOF)
getdirentries64(fd) returns 0 (EOF)
But if you remove the file in the middle between the two calls, the
second call returns an error instead.
fd = open("dir")
getdirentries64(fd) returns data
getdirentries64(fd) returns 0 (EOF)
remove("dir/file")
getdirentries64(fd) returns ENOENT/EINVAL
Whether you get ENOENT or EINVAL depends on exactly what was
in the directory. It is deterministic, just data-dependent.
This only happens in small directories. A directory containing more data
than fits in a 4k getdirentries64 call will return EOF correctly.
(It's not clear if the criteria is that the directory be split across multiple
getdirentries64 calls or that it be split across multiple file system blocks.)
We could change package os to avoid the second read at EOF,
and maybe we should, but that's a bit involved.
For now, treat the EINVAL/ENOENT as EOF.
With this CL, all.bash passes on my MacBook Air running
OS X 10.10 (14A299l) and Xcode 6 beta 5 (6A279r).
I tried filing an issue with Apple using "Feedback Assistant", but it was
unable to send the report and lost it.
C program reproducing the issue, also at http://swtch.com/~rsc/readdirbug.c:
#include <stdio.h>
#include <dirent.h>
#include <unistd.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
static void test(int);
int
main(void)
{
int fd, n;
DIR *dir;
struct dirent *dp;
struct stat st;
char buf[10000];
long basep;
int saw;
if(stat("/tmp/readdirbug", &st) >= 0) {
fprintf(stderr, "please rm -r /tmp/readdirbug and run again\n");
exit(1);
}
fprintf(stderr, "mkdir /tmp/readdirbug\n");
if(mkdir("/tmp/readdirbug", 0777) < 0) {
perror("mkdir /tmp/readdirbug");
exit(1);
}
fprintf(stderr, "create /tmp/readdirbug/file1\n");
if((fd = creat("/tmp/readdirbug/file1", 0666)) < 0) {
perror("create /tmp/readdirbug/file1");
exit(1);
}
close(fd);
test(0);
test(1);
fprintf(stderr, "ok - everything worked\n");
}
static void
test(int doremove)
{
DIR *dir;
struct dirent *dp;
int numeof;
fprintf(stderr, "\n");
fprintf(stderr, "opendir /tmp/readdirbug\n");
dir = opendir("/tmp/readdirbug");
if(dir == 0) {
perror("open /tmp/readdirbug");
exit(1);
}
numeof = 0;
for(;;) {
errno = 0;
dp = readdir(dir);
if(dp != 0) {
fprintf(stderr, "readdir: found %s\n", dp->d_name);
continue;
}
if(errno != 0) {
perror("readdir");
exit(1);
}
fprintf(stderr, "readdir: EOF\n");
if(++numeof == 3)
break;
if(doremove) {
fprintf(stderr, "rm /tmp/readdirbug/file1\n");
if(remove("/tmp/readdirbug/file1") < 0) {
perror("remove");
exit(1);
}
}
}
fprintf(stderr, "closedir\n");
closedir(dir);
}
Fixes#8423.
LGTM=bradfitz, r
R=golang-codereviews, bradfitz, dsymonds, dave, r
CC=golang-codereviews, iant
https://golang.org/cl/119530044
Current version of Getwd calls Stat that
calls Getwd therefore infinite recursion.
LGTM=minux
R=golang-codereviews, minux
CC=golang-codereviews
https://golang.org/cl/119600043
The ast and printer don't care, and go/types can provide
a better error message.
This change requires an update to the tests for go/types
(go.tools repo). CL forthcoming.
Fixes#8493.
LGTM=adonovan
R=rsc, adonovan
CC=golang-codereviews
https://golang.org/cl/123010044
Some systems, like Ubuntu, pass --build-id when linking. The
effect is to put a note in the output file. This is not
useful when generating an object file with the -r option, as
it eventually causes multiple build ID notes in the final
executable, all but one of which are for tiny portions of the
file and are therefore useless.
Disable that by passing an explicit --build-id=none when
linking with -r on systems that might do this.
LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://golang.org/cl/119460043
There are lots of internal synchronization in gob,
so it makes sense to have parallel benchmarks.
Also add a benchmark with slices and interfaces.
LGTM=r
R=golang-codereviews, r
CC=golang-codereviews
https://golang.org/cl/115960043
This lets us have non-main packages like cmd/internal or cmd/nm/internal/whatever.
The src/pkg migration (see golang.org/s/go14mainrepo) will allow this
as a natural side effect. The explicit change here just allows use of the
effect a little sooner.
LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/117630043
To do in another CL: make cmd/objdump use cmd/internal/objfile too.
There is a package placement decision in this CL:
cmd/internal/objfile instead of internal/objfile.
I chose to put internal under cmd to make clear (and enforce)
that no standard library packages should use this
(it's a bit dependency-heavy).
LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/123910043
Eliminating use of this extension makes it easier to port the Go runtime
to other compilers. This CL also disables the extension in cc to prevent
accidental use.
LGTM=rsc, khr
R=rsc, aram, khr, dvyukov
CC=axwalk, golang-codereviews
https://golang.org/cl/106790044
