runtime/race: __acrt_iob_func not defined building with -race on Windows #23649

mattn · 2018-02-01T03:15:53Z

What version of Go are you using (`go version`)?

go version devel +6f37fee354 Wed Jan 31 22:12:10 2018 +0000 windows/amd64

Does this issue reproduce with the latest release?

No, maybe something wrong in recent commits.

What operating system and processor architecture are you using (`go env`)?

set GOARCH=amd64
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOOS=windows

What did you do?

go test -race

What did you expect to see?

works

What did you see instead?

failed with following errors

runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"

The text was updated successfully, but these errors were encountered:

ianlancetaylor · 2018-02-01T04:30:32Z

In which directory are you running go test -race?

mattn · 2018-02-01T04:54:19Z

@ianlancetaylor anywhere can be possible.

$ mkdir %GOPATH%\src\github.com\mattn\foo
$ cd %GOPATH%\src\github.com\mattn\foo
$ cat > foo_test.go
package foo

import (
	"testing"
)

func TestSimple(t *testing.T) {
	got := 1
	want := 2
	if got != want {
		t.Fatalf("want %v, but %v:", want, got)
	}
}
^Z
$ go test -race
# github.com/mattn/foo (testmain)
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"
FAIL    github.com/mattn/foo [build failed]

ianlancetaylor · 2018-02-01T04:58:40Z

Can you show us the output of go test -race -x?

The references may possibly be coming from runtime/race/race_windows_amd64.syso.

mattn · 2018-02-01T05:05:09Z

WORK=C:\Users\mattn\AppData\Local\Temp\go-build145566806
mkdir -p $WORK\b001\
mkdir -p $WORK\b052\
cat >$WORK\b052\vet.cfg << 'EOF' # internal
{
	"Compiler": "gc",
	"Dir": "c:\\dev\\go\\src\\github.com\\mattn\\foo",
	"GoFiles": [
		"c:\\dev\\go\\src\\github.com\\mattn\\foo\\foo_test.go"
	],
	"ImportMap": {
		"fmt": "fmt",
		"testing": "testing"
	},
	"PackageFile": {
		"fmt": "C:\\Users\\mattn\\AppData\\Local\\go-build\\a3\\a3d8338a2cd5a66b9cd0ce3e19a2ba75cae2365147f3d65e37d2214eda7360a9-d",
		"testing": "C:\\Users\\mattn\\AppData\\Local\\go-build\\ed\\edcf0d2f0bf2ebf41c928d10bebf64e600e87fc72dd897c0951bb13dc86989ea-d"
	},
	"ImportPath": "github.com/mattn/foo",
	"SucceedOnTypecheckFailure": true
}
EOF
cd c:\dev\go\src\github.com\mattn\foo
"C:\\go\\pkg\\tool\\windows_amd64\\vet.exe" -atomic -bool -buildtags -nilfunc -printf "C:\\Users\\mattn\\AppData\\Local\\Temp\\go-build145566806\\b052\\vet.cfg"
cat >$WORK\b001\importcfg.link << 'EOF' # internal
packagefile github.com/mattn/foo (testmain)=C:\Users\mattn\AppData\Local\go-build\a1\a1cd7cb20a5f900d42bb15aed70e97bb42e4421b20bb2ee25b2ecf2e983957db-d
packagefile os=C:\Users\mattn\AppData\Local\go-build\83\837d4b3bdc415f8bcb91dcdabce57fa92c56b9518b71791e700f81d857e79e68-d
packagefile testing=C:\Users\mattn\AppData\Local\go-build\ed\edcf0d2f0bf2ebf41c928d10bebf64e600e87fc72dd897c0951bb13dc86989ea-d
packagefile testing/internal/testdeps=C:\Users\mattn\AppData\Local\go-build\ee\ee6f4653963b6916af2a304b23aac3a17080459df3fecf65dbd96759150078f6-d
packagefile runtime=C:\Users\mattn\AppData\Local\go-build\1e\1e02e966f3220ba3fa509fc0f88a1782dfab120d8d0140405537cbc5857bcd6e-d
packagefile runtime/race=C:\Users\mattn\AppData\Local\go-build\78\78c2b3fc30b8de4bf316f28c8f64417b6add42815c3f9e3e947f80b96e6d6c75-d
packagefile github.com/mattn/foo=C:\Users\mattn\AppData\Local\go-build\68\68f4246cdf49dc4424505adbe919adfcbb58be7b247c5cdbcc666f2c679dbcf2-d
packagefile errors=C:\Users\mattn\AppData\Local\go-build\68\68e3f9c288343074208dc9e0a266346ff7625e552ef829ada893db6628a51f8b-d
packagefile internal/poll=C:\Users\mattn\AppData\Local\go-build\b7\b7daed2c5d1cdfcf9f6480e996b73a0dd4433478e4dc8a4d3c6f747baae8c073-d
packagefile internal/syscall/windows=C:\Users\mattn\AppData\Local\go-build\13\13816b7dc009ed7c1e7274f912134c95e68ba9cc82a7031905c6b8b42c1f2891-d
packagefile internal/testlog=C:\Users\mattn\AppData\Local\go-build\f0\f0da1bc52eda632593bdb6d042a0fcd484fa373f29204ae36d41259241023492-d
packagefile io=C:\Users\mattn\AppData\Local\go-build\ca\ca0ff109878b733122cb5ac2fb576f5d6bb1652a7dde8e765dd65261156554ed-d
packagefile sync=C:\Users\mattn\AppData\Local\go-build\c1\c1ddb79625fec9aa4575933dbd316dba9b27d79555757941ede222d3cc6e4bb2-d
packagefile sync/atomic=C:\Users\mattn\AppData\Local\go-build\29\2937e911eec472bb2123d58af418e2da85468ba6ca3fd0a1533744f690356776-d
packagefile syscall=C:\Users\mattn\AppData\Local\go-build\2c\2c58e945883ab36d2410c5d364a63944cd39f0eaccbcfc4326a7b0778c854327-d
packagefile time=C:\Users\mattn\AppData\Local\go-build\45\4572e703e2c552c5d557caa54079f1f6074f059c277ae6567f51589f20c9643c-d
packagefile unicode/utf16=C:\Users\mattn\AppData\Local\go-build\6a\6a9a0523c33041ad28aa6b951f78b4940445672f274feca8c019afacf0594f16-d
packagefile bytes=C:\Users\mattn\AppData\Local\go-build\d0\d01cb1df3ed8d3f9e49d35230e43dce1ab928560bd37548fd1f859605b690d1b-d
packagefile flag=C:\Users\mattn\AppData\Local\go-build\8e\8e5a9f40700f231986b5fe7827befbc2dc832a33bf954a3555d941dc46370ec3-d
packagefile fmt=C:\Users\mattn\AppData\Local\go-build\a3\a3d8338a2cd5a66b9cd0ce3e19a2ba75cae2365147f3d65e37d2214eda7360a9-d
packagefile internal/race=C:\Users\mattn\AppData\Local\go-build\47\47969aa17e7eb3241750ed30f2cbd2fc100ad3ac7c4af97a47a0d28e678235e1-d
packagefile runtime/debug=C:\Users\mattn\AppData\Local\go-build\63\637b0a90189037487b87f9d8d1ab56aff367e6ef5c5cdf92ce9004551a13d6e8-d
packagefile runtime/trace=C:\Users\mattn\AppData\Local\go-build\cc\cc72603177f7f1a64234e4263075a00cb2a940d9de8ff935aaeee89f9c1a1b9a-d
packagefile sort=C:\Users\mattn\AppData\Local\go-build\7e\7eb34e9c94bb2e5765f2ea39a77592f416a8e5d45f892b7134534cb61d8b0143-d
packagefile strconv=C:\Users\mattn\AppData\Local\go-build\bf\bf8cb0e39b03fa85f5c18875f0f4b8ea940c17a9eb2b367c2d9ec60eb41b9f27-d
packagefile strings=C:\Users\mattn\AppData\Local\go-build\e3\e3921607adc7f7e34c5c3c7885e9e7a8de28dcadce77deae9f362d10ace9fef6-d
packagefile bufio=C:\Users\mattn\AppData\Local\go-build\31\3172eec9b4e15ba9b56253ad8a0bf3de77d3752ae423f552f2bb20f1fb5f0b5c-d
packagefile regexp=C:\Users\mattn\AppData\Local\go-build\9f\9f439c7b8919063d5dd387dca4e3e65a68e9195b8545194868c5bebdec840b1c-d
packagefile runtime/pprof=C:\Users\mattn\AppData\Local\go-build\7e\7eb89538e15c98300ddc1f774643f0610bdb9bcf8e8d4d286ac2b8e81f4b9d2e-d
packagefile runtime/internal/atomic=C:\Users\mattn\AppData\Local\go-build\24\240e5b9c27d638d2e2752efb5ad5aa9bf413d1ef39227bcf81edfc3638f9c69d-d
packagefile runtime/internal/sys=C:\Users\mattn\AppData\Local\go-build\9e\9ecbfdff43cebed79c4d60e65bd9b9fe62eaa357639bdd9e730410b85f69baff-d
packagefile runtime/cgo=C:\Users\mattn\AppData\Local\go-build\a5\a52e8da57055eafee31eb84a4893c9971088b8deaa63de99103f3e100a09ef2a-d
packagefile unicode/utf8=C:\Users\mattn\AppData\Local\go-build\6e\6efff469d5bf5358781c24fec393abd273bc605322f725abc0a581be9676286b-d
packagefile internal/syscall/windows/sysdll=C:\Users\mattn\AppData\Local\go-build\f1\f1b02e75282f68faefcaf8527406783929070b3c6178b7f5813bbf5275dd9818-d
packagefile internal/syscall/windows/registry=C:\Users\mattn\AppData\Local\go-build\45\452267d2da652a5afdf48dc13d2bf4842c63e42cee983833b0d24238f1469652-d
packagefile internal/cpu=C:\Users\mattn\AppData\Local\go-build\08\0820411bd99f23e507e18428a919a89772e24f45fde3993bbde77ddbe64693d2-d
packagefile unicode=C:\Users\mattn\AppData\Local\go-build\da\da22e4a89a2be70ca5572a07cbc04f555592fa5efa1945a5a236f8d16391e52f-d
packagefile reflect=C:\Users\mattn\AppData\Local\go-build\fe\fe0225cad5ff122232f6b54733283073c143e2bb7201c11911fa74afb37773b5-d
packagefile math=C:\Users\mattn\AppData\Local\go-build\54\5477db0575eaad986e6af44a6d92eb5b9b029f68bd2eda1cff695feef78ab65b-d
packagefile regexp/syntax=C:\Users\mattn\AppData\Local\go-build\ff\ff255ed1e973468deb90e18fbb8dfd410cbaedf18f28d5f962ffbf18507593c3-d
packagefile compress/gzip=C:\Users\mattn\AppData\Local\go-build\01\01e494cfaaaf1e74612ca5a553f42b57c7ace529f9014a66fed37ac5795f9cf1-d
packagefile context=C:\Users\mattn\AppData\Local\go-build\f3\f31d3ebc36126e980dda077c1e58e38807ea213eb5f2aeb5660d3bbb7bb0a211-d
packagefile encoding/binary=C:\Users\mattn\AppData\Local\go-build\20\201852e405473d2c0ba6af3f027543b807e62d9a51522011044368906db73cb4-d
packagefile io/ioutil=C:\Users\mattn\AppData\Local\go-build\ed\edbe00c607f78531a963dbe6201f18c2a7b3ccd4b1df109fb352cf03b47435b9-d
packagefile text/tabwriter=C:\Users\mattn\AppData\Local\go-build\63\63adbe090316bef2abadb405f567ad610d9b67394b9c759c84ba1d835e5bf6e1-d
packagefile compress/flate=C:\Users\mattn\AppData\Local\go-build\15\154623f1674dd99d895f1da69c50f27258b7a12ac729ae26182ad1b378eeaaad-d
packagefile hash/crc32=C:\Users\mattn\AppData\Local\go-build\ce\cead5fd22d068fcf09b8e5243bc51760a843e6bdcb21bb4ad0d5850b9748135b-d
packagefile path/filepath=C:\Users\mattn\AppData\Local\go-build\74\745eee1f96c076cc9d5022442547312bc1b877ceb2dbdab11fe92a062c4196d9-d
packagefile math/bits=C:\Users\mattn\AppData\Local\go-build\44\44634ab159fd5fc49a33bfc094c9913922a2aa5d82551333f71c01daac982955-d
packagefile hash=C:\Users\mattn\AppData\Local\go-build\7b\7b545474ad2305b77c32f519c4c9d8c4d7e8a6631fdb4e68d36649820e0c0993-d
EOF
cd .
"C:\\go\\pkg\\tool\\windows_amd64\\link.exe" -o "C:\\Users\\mattn\\AppData\\Local\\Temp\\go-build145566806\\b001\\foo.test.exe" -importcfg "C:\\Users\\mattn\\AppData\\Local\\Temp\\go-build145566806\\b001\\importcfg.link" -installsuffix race -s -w -buildmode=exe -buildid=SahtbTegVVJvP74olz_7/8pJx4XviJbtdY1jhw28h/woq27DTbfcLI0z8p91IG/SahtbTegVVJvP74olz_7 -race -extld=gcc "C:\\Users\\mattn\\AppData\\Local\\go-build\\a1\\a1cd7cb20a5f900d42bb15aed70e97bb42e4421b20bb2ee25b2ecf2e983957db-d"
# github.com/mattn/foo (testmain)
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): relocation target __acrt_iob_func not defined
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"
runtime/cgo(.text): undefined: "__acrt_iob_func"
rm -r $WORK\b001\
FAIL	github.com/mattn/foo [build failed]

alexbrainman · 2018-02-04T00:42:04Z

@mattn are you sure?

I cannot reproduce this:

c:\Users\Alex\dev\src\issue\go\23649>type foo_test.go
package foo

import (
        "testing"
)

func TestSimple(t *testing.T) {
        got := 1
        want := 2
        if got != want {
                t.Fatalf("want %v, but %v:", want, got)
        }
}

c:\Users\Alex\dev\src\issue\go\23649>go version
go version devel +6f37fee354 Wed Jan 31 22:12:10 2018 +0000 windows/amd64

c:\Users\Alex\dev\src\issue\go\23649>go test -race
--- FAIL: TestSimple (0.00s)
        foo_test.go:11: want 2, but 1:
FAIL
exit status 1
FAIL    issue/go/23649  0.052s

c:\Users\Alex\dev\src\issue\go\23649>

Alex

mattn · 2018-02-04T12:21:56Z

Yes, I found this on my Windows7. Now I'm on Windows10 and reproduce this. This is gcc version I use.

gcc (Rev1, Built by MSYS2 project) 7.3.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

mattn · 2018-02-05T02:16:14Z

If I put following code on same directory, go test -race works fine.

package foo

//
import "C"

alexbrainman · 2018-02-11T01:31:39Z

gcc (Rev1, Built by MSYS2 project) 7.3.0

The latest of gcc I have is version 5. How do I install 7.3.0 ?

Thank you

Alex

mattn · 2018-02-14T10:31:35Z

I installed gcc 7.3.0 from https://github.com/Alexpux/MINGW-packages

Yesterday, I updated mingw gcc using pacman command. And it seems that this problem disappears. I apologize for bothering you

alexbrainman · 2018-02-14T11:35:11Z

Yesterday, I updated mingw gcc using pacman command. And it seems that this problem disappears. I apologize for bothering you

No worries. All is good.

Alex

mattn · 2018-02-17T13:36:23Z

I could reproduce this on my Windows 10. So I reopen this.

mattn · 2018-02-17T13:38:31Z

Seems to be related on https://sourceforge.net/p/mingw-w64/mingw-w64/ci/af149abc81550de19a80fba0f9d0e89fe4d01f2f/

mattn · 2018-02-19T02:47:59Z

libgcc.a (which is placed at pointed by gcc --print-libgcc-file-name command) seems not include symbol __acrt_iob_func. It seems to be contained in libmsvcrt.a. But even if I patched below, duplicated symbol error occured then.

diff --git a/src/cmd/link/internal/ld/lib.go b/src/cmd/link/internal/ld/lib.go
index bfff5209a6..9f18cfac50 100644
--- a/src/cmd/link/internal/ld/lib.go
+++ b/src/cmd/link/internal/ld/lib.go
@@ -528,6 +528,9 @@ func (ctxt *Link) loadlib() {
 				if p := ctxt.findLibPath("libmingw32.a"); p != "none" {
 					hostArchive(ctxt, p)
 				}
+				if p := ctxt.findLibPath("libmsvcrt.a"); p != "none" {
+					hostArchive(ctxt, p)
+				}
 				// TODO: maybe do something similar to peimporteddlls to collect all lib names
 				// and try link them all to final exe just like libmingwex.a and libmingw32.a:
 				/*

Any idea to fix this?

ajaychk · 2018-05-25T05:11:05Z

facing same issue
➜ dddgit:(bolt) ✗ env GOOS=linux go build . runtime/cgo(__TEXT/__text): relocation target x_cgo_inittls not defined runtime/cgo(__TEXT/__text): relocation target x_cgo_threadentry not defined runtime/cgo(__TEXT/__text): undefined: "x_cgo_inittls" runtime/cgo(__TEXT/__text): undefined: "x_cgo_threadentry"

ajruckman · 2018-07-19T00:02:43Z

I have the same issue. If it helps to have more logs, here are mine.

This is the version of MinGW I am using on Windows 10.

mattn · 2018-07-19T09:01:46Z

Workaround for this, try to add -ldflags="-linkmode=external" for build.

incapable · 2018-07-23T21:21:41Z

Can confirm this as well on windows 10, go 1.10.3 and gcc 8.1.0 x86_64

garrettporter · 2018-08-20T19:30:34Z

Having the same issue. @mattn 's workaround did not work for me.

Windows 10
mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0
go version go1.10.3 windows/amd64

Seems to be related to golang/go#23649.

This is an attempt to work around golang/go#23649.

Seems to be related to golang/go#23649.

jazzy-crane · 2018-09-26T13:07:39Z

Also seeing this. Only effects tests that bring in cgo code

Windows 10
gcc version 8.1.0 (x86_64-posix-sjlj-rev0, Built by MinGW-W64 project)
go version go1.11 windows/amd64

Full GCC version info:

C:\MyGo\src\repo.jazznetworks.com\jazz\main>gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=C:/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/8.1.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../../../src/gcc-8.1.0/configure --host=x86_64-w64-mingw32 --build=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --prefix=/mingw64 --with-sysroot=/c/mingw810/x86_64-810-posix-sjlj-rt_v6-rev0/mingw64 --enable-shared --enable-static --enable-targets=all --enable-multilib --enable-languages=c,c++,fortran,lto --enable-libstdcxx-time=yes --enable-threads=posix --enable-libgomp --enable-libatomic --enable-lto --enable-graphite --enable-checking=release --enable-fully-dynamic-string --enable-version-specific-runtime-libs --enable-sjlj-exceptions --disable-libstdcxx-pch --disable-libstdcxx-debug --enable-bootstrap --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --with-gnu-as --with-gnu-ld --with-arch-32=i686 --with-arch-64=nocona --with-tune-32=generic --with-tune-64=core2 --with-libiconv --with-system-zlib --with-gmp=/c/mingw810/prerequisites/x86_64-w64-mingw32-static --with-mpfr=/c/mingw810/prerequisites/x86_64-w64-mingw32-static --with-mpc=/c/mingw810/prerequisites/x86_64-w64-mingw32-static --with-isl=/c/mingw810/prerequisites/x86_64-w64-mingw32-static --with-pkgversion='x86_64-posix-sjlj-rev0, Built by MinGW-W64 project' --with-bugurl=https://sourceforge.net/projects/mingw-w64 CFLAGS='-O2 -pipe -fno-ident -I/c/mingw810/x86_64-810-posix-sjlj-rt_v6-rev0/mingw64/opt/include -I/c/mingw810/prerequisites/x86_64-zlib-static/include -I/c/mingw810/prerequisites/x86_64-w64-mingw32-static/include' CXXFLAGS='-O2 -pipe -fno-ident -I/c/mingw810/x86_64-810-posix-sjlj-rt_v6-rev0/mingw64/opt/include -I/c/mingw810/prerequisites/x86_64-zlib-static/include -I/c/mingw810/prerequisites/x86_64-w64-mingw32-static/include' CPPFLAGS=' -I/c/mingw810/x86_64-810-posix-sjlj-rt_v6-rev0/mingw64/opt/include -I/c/mingw810/prerequisites/x86_64-zlib-static/include -I/c/mingw810/prerequisites/x86_64-w64-mingw32-static/include' LDFLAGS='-pipe -fno-ident -L/c/mingw810/x86_64-810-posix-sjlj-rt_v6-rev0/mingw64/opt/lib -L/c/mingw810/prerequisites/x86_64-zlib-static/lib -L/c/mingw810/prerequisites/x86_64-w64-mingw32-static/lib '
Thread model: posix
gcc version 8.1.0 (x86_64-posix-sjlj-rev0, Built by MinGW-W64 project)

ianlancetaylor · 2018-11-28T05:18:53Z

CC @dvyukov

elagergren-spideroak · 2019-01-25T03:03:58Z

Not an entirely new data point, but, on Windows 7 with Go 1.11.4.

# uname -a
MINGW64_NT-6.1 WIN-2R64B2Q8DUG 2.11.2(0.329/5/3) 2018-11-26 09:22 x86_64 Msys

# gcc --version
gcc.exe (Rev1, Built by MSYS2 project) 8.2.1 20181214
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

AFAICT, I only get it when not importing "C".

alexbrainman · 2019-03-03T07:54:49Z

I just downloaded x86_64-7.3.0-release-win32-seh-rt_v5-rev0.7z file from https://sourceforge.net/projects/mingw-w64/files/

The file contains

c:\>gcc --version
gcc (x86_64-win32-seh-rev0, Built by MinGW-W64 project) 7.3.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


c:\>gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=c:/users/alex/dev/x86_64-7.3.0-release-win32-seh-rt_v5-rev0/bin/../libexec/gcc/x86_64-w64-mingw32/7.3.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../../../src/gcc-7.3.0/configure --host=x86_64-w64-mingw32 --build=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --prefix=/mingw64 --with-sysroot=/c/mingw730/x86_64-730-win32-seh-rt_v5-rev0/mingw64 --enable-shared --enable-static --disable-multilib --enable-languages=c,c++,fortran,lto --enable-libstdcxx-time=yes --enable-threads=win32 --enable-libgomp --enable-libatomic --enable-lto --enable-graphite --enable-checking=release --enable-fully-dynamic-string --enable-version-specific-runtime-libs --enable-libstdcxx-filesystem-ts=yes --disable-libstdcxx-pch --disable-libstdcxx-debug --enable-bootstrap --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --with-gnu-as --with-gnu-ld --with-arch=nocona --with-tune=core2 --with-libiconv --with-system-zlib --with-gmp=/c/mingw730/prerequisites/x86_64-w64-mingw32-static --with-mpfr=/c/mingw730/prerequisites/x86_64-w64-mingw32-static --with-mpc=/c/mingw730/prerequisites/x86_64-w64-mingw32-static --with-isl=/c/mingw730/prerequisites/x86_64-w64-mingw32-static --with-pkgversion='x86_64-win32-seh-rev0, Built by MinGW-W64 project' --with-bugurl=https://sourceforge.net/projects/mingw-w64 CFLAGS='-O2 -pipe -fno-ident -I/c/mingw730/x86_64-730-win32-seh-rt_v5-rev0/mingw64/opt/include -I/c/mingw730/prerequisites/x86_64-zlib-static/include -I/c/mingw730/prerequisites/x86_64-w64-mingw32-static/include' CXXFLAGS='-O2 -pipe -fno-ident -I/c/mingw730/x86_64-730-win32-seh-rt_v5-rev0/mingw64/opt/include -I/c/mingw730/prerequisites/x86_64-zlib-static/include -I/c/mingw730/prerequisites/x86_64-w64-mingw32-static/include' CPPFLAGS=' -I/c/mingw730/x86_64-730-win32-seh-rt_v5-rev0/mingw64/opt/include -I/c/mingw730/prerequisites/x86_64-zlib-static/include -I/c/mingw730/prerequisites/x86_64-w64-mingw32-static/include' LDFLAGS='-pipe -fno-ident -L/c/mingw730/x86_64-730-win32-seh-rt_v5-rev0/mingw64/opt/lib -L/c/mingw730/prerequisites/x86_64-zlib-static/lib -L/c/mingw730/prerequisites/x86_64-w64-mingw32-static/lib '
Thread model: win32
gcc version 7.3.0 (x86_64-win32-seh-rev0, Built by MinGW-W64 project)

c:\>

Seems to be working fine for me

c:\>go version
go version devel +249f5d2af4 Fri Mar 1 23:14:39 2019 +0000 windows/amd64

c:\>go test -race -count=1 path/filepath
ok      path/filepath   1.983s

c:\>

Alex

mattn · 2019-03-03T11:16:19Z

mingw64 compiler bundled on msys2

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=c:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.2.1/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../gcc-8-20181214/configure --prefix=/mingw64 --with-local-prefix=/mingw64/local --build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --with-native-system-header-dir=/mingw64/x86_64-w64-mingw32/include --libexecdir=/mingw64/lib --enable-bootstrap --with-arch=x86-64 --with-tune=generic --enable-languages=ada,c,lto,c++,objc,obj-c++,fortran --enable-shared --enable-static --enable-libatomic --enable-threads=posix --enable-graphite --enable-fully-dynamic-string --enable-libstdcxx-filesystem-ts=yes --enable-libstdcxx-time=yes --disable-libstdcxx-pch --disable-libstdcxx-debug --disable-isl-version-check --enable-lto --enable-libgomp --disable-multilib --enable-checking=release --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --with-libiconv --with-system-zlib --with-gmp=/mingw64 --with-mpfr=/mingw64 --with-mpc=/mingw64 --with-isl=/mingw64 --with-pkgversion='Rev1, Built by MSYS2 project' --with-bugurl=https://sourceforge.net/projects/msys2 --with-gnu-as --with-gnu-ld
Thread model: posix
gcc version 8.2.1 20181214 (Rev1, Built by MSYS2 project)

runtime/cgo(.text): relocation target __acrt_iob_func not defined for ABI0 (but is defined for ABI0)
runtime/cgo(.text): relocation target __acrt_iob_func not defined for ABI0 (but is defined for ABI0)
runtime/cgo(.text): relocation target __acrt_iob_func not defined for ABI0 (but is defined for ABI0)
FAIL	github.com/mattn/go-sandbox/race [build failed]

alexbrainman · 2019-03-03T11:27:52Z

Thread model: posix

Hey! I know nothing about GCC. But mine has

Thread model: win32

Try find GCC similar to mine. Or download one from https://sourceforge.net/projects/mingw-w64/files/

See, if it works.

Alex

alexbrainman · 2019-04-28T05:07:16Z

@mattn I managed to reproduce your problem, if I use internal linker:

c:\>go version
go version devel +2177bfb343 Fri Apr 26 21:54:41 2019 +0000 windows/amd64

c:\>gcc --version
gcc (x86_64-win32-seh-rev0, Built by MinGW-W64 project) 7.3.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


c:\>go test -short debug/pe
--- FAIL: TestInternalLinkerDWARF (1.25s)
    file_test.go:356: building test executable for linktype 2 failed: exit status 2 # command-line-arguments
        runtime/cgo(.text): relocation target __acrt_iob_func not defined for ABI0 (but is defined for ABI0)
        runtime/cgo(.text): relocation target __acrt_iob_func not defined for ABI0 (but is defined for ABI0)
        runtime/cgo(.text): relocation target __acrt_iob_func not defined for ABI0 (but is defined for ABI0)
FAIL
FAIL    debug/pe        6.120s

c:\>

Alex

jakirkham · 2019-05-16T22:06:02Z

Ran into this issue recently when trying to build gdrive on Linux. Here's the build script that was used and the log. Was only able to fix it with @mattn's workaround above.

Edited: To provide more stable links to these artifacts.

TriAnMan · 2019-08-06T14:05:17Z

I reproduce this error every time I try debugging a binary with a -race argument for go tool in the GoLand IDE.

mattn · 2019-08-08T03:07:40Z

libcrtdll.al include symbol of __acrt_iob_func. So I tried to specify -libgcc to libcrtdll.a but new error occured.

HEADER = -H11 -T0xffffffffffffffff -R0xffffffff
c:\msys64\mingw64\x86_64-w64-mingw32\lib\libcrtdll.a(/75): duplicate symbol reference: __acrt_iob_func in both libgcc(.text) and libgcc(.data)
gcc [-m64 --print-file-name=libmingwex.a]
gcc [-m64 --print-file-name=libmingw32.a]
 0.00 deadcode
 0.02 windynrelocsyms
 0.04 pclntab=883521 bytes, funcdata total 205602 bytes
 0.05 dodata
 0.06 reloc
 0.07 asmb
 0.07 codeblk
 0.08 rodatblk
 0.09 datblk
 0.09 headr
 0.09 cpu time
70990 symbols
137048 liveness data

Applying workaround patch to ignore duplicate symbol to link.

diff --git a/src/cmd/link/internal/loadpe/ldpe.go b/src/cmd/link/internal/loadpe/ldpe.go
index f08e1241a7..b02ffd0ceb 100644
--- a/src/cmd/link/internal/loadpe/ldpe.go
+++ b/src/cmd/link/internal/loadpe/ldpe.go
@@ -465,6 +465,7 @@ func readpesym(arch *sys.Arch, syms *sym.Symbols, f *pe.File, pesym *pe.COFFSymb
 		switch pesym.StorageClass {
 		case IMAGE_SYM_CLASS_EXTERNAL: //global
 			s = syms.Lookup(name, 0)
+			s.Attr |= sym.AttrDuplicateOK
 
 		case IMAGE_SYM_CLASS_NULL, IMAGE_SYM_CLASS_STATIC, IMAGE_SYM_CLASS_LABEL:
 			s = syms.Lookup(name, localSymVersion)

And replace libgcc to libcrtdll.a

"C:\go\pkg\tool\windows_amd64\link.exe" -libgcc c:\msys64\mingw64\x86_64-w64-mingw32\lib\libcrtdll.a -v -o race.test.exe -importcfg "C:\Users\mattn\AppData\Local\Temp\go-build513371986\b001\importcfg.link" -installsuffix race -s -w -buildmode=exe -buildid=3esQSTFNwKjQb1FEP_7l/gjURKijru_dPeOTOCljs/eEnc_vxaS0uhL6wLrl5X/3esQSTFNwKjQb1FEP_7l -race -extld=gcc "C:\Users\mattn\AppData\Local\go-build\a0\a0796ee7b6afc644bdeb01ed7dac7357541ae2e2eaf4a534dee5e10f0da662ba-d"

Now I could generate race.test.exe and works correctly. I wonder this information become a hint to solve this issue.

gopherbot · 2019-08-17T15:57:16Z

Change https://golang.org/cl/190481 mentions this issue: cmd/link/internal: ignore duplicate symbols for cgo

mattn · 2019-08-17T16:43:09Z

Another solution is removing stderr from runtime/cgo/windows.c

alexbrainman · 2019-08-18T08:10:51Z

Another solution is removing stderr from runtime/cgo/windows.c

I do not understand. What exactly are you proposing? Thank you.

Alex

mattn · 2019-08-18T11:59:51Z

stdout/stdin/stderr is macro of __acrt_iob_func. So if remove using them, this error should be removed, I guess.

alexbrainman · 2019-08-21T10:15:24Z

stdout/stdin/stderr is macro of __acrt_iob_func. So if remove using them, this error should be removed

We have no control over what other people do in their C code. They could include whatever headers they need. So this will not work.

Alex

gopherbot · 2019-09-30T10:00:09Z

Change https://golang.org/cl/197977 mentions this issue: cmd/link: use libmsvcrt.a during internal link

gopherbot · 2019-10-26T21:05:34Z

Change https://golang.org/cl/203603 mentions this issue: Revert "cmd/link: use libmsvcrt.a during internal link"

jakirkham · 2019-10-27T02:43:33Z

So if the fix was reverted, should this be reopened?

alexbrainman · 2019-10-27T04:02:32Z

So if the fix was reverted,

@jakirkham

Change https://golang.org/cl/203603 has not been submitted yet. So the fix is still there.

We are considering to use this copy of Mingw - http://musl.cc/x86_64-w64-mingw32-native.zip (see #35006 (comment) for details). If you are affected by this current issue, can you try this Mingw to see, if it fixes your problem?

Thank you.

Alex

timou · 2020-03-20T19:52:56Z

For anyone else who ends up here, I've used the excellent MinGW compiler collection bundle from @StephanTLavavej for building CGO stuff on Windows for years. It's great, up-to-date, and it fixed this issue for me.

Download from https://nuwen.net/mingw.html
Unpack to C:\MinGW
Add C:\MinGW\bin to PATH
Profit.

ianlancetaylor added the OS-Windows label Feb 1, 2018

ianlancetaylor added this to the Go1.11 milestone Feb 1, 2018

ianlancetaylor added the NeedsInvestigation label Feb 1, 2018

mattn closed this as completed Feb 14, 2018

mattn reopened this Feb 17, 2018

ianlancetaylor changed the title ~~runtime/cgo(.text): relocation target __acrt_iob_func not defined~~ runtime/cgo: relocation target __acrt_iob_func not defined Jun 28, 2018

ianlancetaylor modified the milestones: Go1.11, Go1.12 Jun 28, 2018

bpicode added a commit to bpicode/fritzctl that referenced this issue Sep 4, 2018

Remove race flag when testing on windows environment

2d6f6bb

Seems to be related to golang/go#23649.

gbrlsnchs pushed a commit to gbrlsnchs/jwt that referenced this issue Sep 14, 2018

Add ldflags flag to test on AppVeyor

bbcbadf

This is an attempt to work around golang/go#23649.

bpicode added a commit to bpicode/fritzctl that referenced this issue Sep 16, 2018

Remove race flag when testing on windows environment

78bf723

Seems to be related to golang/go#23649.

ianlancetaylor modified the milestones: Go1.12, Unplanned Nov 28, 2018

ianlancetaylor added the help wanted label Nov 28, 2018

jakirkham mentioned this issue May 16, 2019

Add gdrive conda-forge/staged-recipes#8410

Merged

5 tasks

stuarteberg mentioned this issue Jul 1, 2019

Update to 1.12 conda-forge/go-feedstock#54

Merged

5 tasks

alexbrainman mentioned this issue Jul 13, 2019

cmd/nm: TestInternalLinkerCgoExec fails #33028

Closed

alexbrainman mentioned this issue Oct 19, 2019

x/build: update C compiler on Windows builders to a currently-maintained version #35006

Closed

gopherbot closed this as completed in e4c3925 Oct 20, 2019

jayconrod mentioned this issue Aug 26, 2020

go: link error with libmsvcrt.a when race mode enabled on Windows bazel-contrib/rules_go#2614

Closed

golang locked and limited conversation to collaborators Mar 20, 2021

gopherbot added the FrozenDueToAge label Mar 20, 2021

runtime/race: __acrt_iob_func not defined building with -race on Windows #23649

runtime/race: __acrt_iob_func not defined building with -race on Windows #23649

Comments

mattn commented Feb 1, 2018

What version of Go are you using (go version)?

Does this issue reproduce with the latest release?

What operating system and processor architecture are you using (go env)?

What did you do?

What did you expect to see?

What did you see instead?

ianlancetaylor commented Feb 1, 2018

mattn commented Feb 1, 2018

ianlancetaylor commented Feb 1, 2018

mattn commented Feb 1, 2018

alexbrainman commented Feb 4, 2018

mattn commented Feb 4, 2018

mattn commented Feb 5, 2018

alexbrainman commented Feb 11, 2018

mattn commented Feb 14, 2018

alexbrainman commented Feb 14, 2018

mattn commented Feb 17, 2018

mattn commented Feb 17, 2018

mattn commented Feb 19, 2018

ajaychk commented May 25, 2018 • edited Loading

ajruckman commented Jul 19, 2018

mattn commented Jul 19, 2018

incapable commented Jul 23, 2018

garrettporter commented Aug 20, 2018

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ianlancetaylor commented Nov 28, 2018

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alexbrainman commented Mar 3, 2019

mattn commented Mar 3, 2019

alexbrainman commented Mar 3, 2019

alexbrainman commented Apr 28, 2019

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TriAnMan commented Aug 6, 2019

mattn commented Aug 8, 2019 • edited Loading

gopherbot commented Aug 17, 2019

mattn commented Aug 17, 2019

alexbrainman commented Aug 18, 2019

mattn commented Aug 18, 2019

alexbrainman commented Aug 21, 2019

gopherbot commented Sep 30, 2019

gopherbot commented Oct 26, 2019

jakirkham commented Oct 27, 2019

alexbrainman commented Oct 27, 2019

timou commented Mar 20, 2020

What version of Go are you using (`go version`)?

What operating system and processor architecture are you using (`go env`)?

ajaychk commented May 25, 2018 •

edited

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jazzy-crane commented Sep 26, 2018 •

edited

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elagergren-spideroak commented Jan 25, 2019 •

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jakirkham commented May 16, 2019 •

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mattn commented Aug 8, 2019 •

edited

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