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cmd/go: linux/386 buildmode=c-shared with gccgo fails: undefined reference to '__stack_chk_fail_local' #13860

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jtsylve opened this issue Jan 7, 2016 · 5 comments
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cmd/go: linux/386 buildmode=c-shared with gccgo fails: undefined reference to '__stack_chk_fail_local' #13860

jtsylve opened this issue Jan 7, 2016 · 5 comments
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@jtsylve
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jtsylve commented Jan 7, 2016

What version of Go are you using (go version)?
go version go1.5.1 linux/386 as well as go version go1.6beta1 linux/386
gccgo (Ubuntu 5.2.1-22ubuntu2) 5.2.1 20151010

What operating system and processor architecture are you using?
Linux ubuntu32 4.2.0-23-generic #28-Ubuntu SMP Sun Dec 27 17:48:35 UTC 2015 i686 i686 i686 GNU/Linux

What did you do?
I'm trying to compile using -buildmode=c-shared and -compiler=gccgo since gc doesn't support c-shared on linux/386 yet.

// test.go
package main

import "C"

//export test_export
func test_export() {}
func main()        {}

go build -compiler=gccgo -buildmode=c-shared -o test.so test.go

What did you expect to see?
A compiled, working shared library

What did you see instead?

# command-line-arguments
ar: `u' modifier ignored since `D' is the default (see `U')
# command-line-arguments
/tmp/go-build634452352/command-line-arguments/_obj/_cgo_defun.c:33: error: undefined reference to '__stack_chk_fail_local'
/tmp/go-build634452352/command-line-arguments/_obj/_cgo_defun.c:37: error: undefined reference to '__stack_chk_fail_local'
/tmp/go-build634452352/command-line-arguments/_obj/_cgo_defun.c:42: error: undefined reference to '__stack_chk_fail_local'
collect2: error: ld returned 1 exit status
@jtsylve
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jtsylve commented Jan 7, 2016

I think this may be related to CL https://golang.org/cl/13615, which removed the symbols to partially fix #9327

@ianlancetaylor
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CL 13615 did not affect gccgo, so that's not it.

Could you show the output of go build -compiler=gccgo -buildmode=c-shared -x -o test.so test.go? That is, add a -x option. Thanks.

@ianlancetaylor ianlancetaylor changed the title linux/386 buildmode=c-shared with gccgo fails: undefined reference to '__stack_chk_fail_local' cmd/go: linux/386 buildmode=c-shared with gccgo fails: undefined reference to '__stack_chk_fail_local' Jan 8, 2016
@ianlancetaylor ianlancetaylor added this to the Go1.6Maybe milestone Jan 8, 2016
@ianlancetaylor ianlancetaylor self-assigned this Jan 8, 2016
@jtsylve
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jtsylve commented Jan 8, 2016 

mkdir -p $WORK/command-line-arguments/_obj/
mkdir -p $WORK/command-line-arguments/_obj/exe/
cd /home/joe/Desktop
CGO_LDFLAGS="-g" "-O2" /home/joe/Downloads/go/pkg/tool/linux_386/cgo -objdir $WORK/command-line-arguments/_obj/ -importpath command-line-arguments -gccgo -exportheader=$WORK/command-line-arguments/_obj/_cgo_install.h -- -I $WORK/command-line-arguments/_obj/ test.go
gcc -Wall -g -I $WORK/command-line-arguments/_obj/ -I /home/joe/Downloads/go/pkg/include -o $WORK/command-line-arguments/_obj/_cgo_defun.o -D GOOS_linux -D GOARCH_386 -m32 -fsplit-stack -fPIC -c $WORK/command-line-arguments/_obj/_cgo_defun.c
gcc -I . -fPIC -m32 -pthread -fmessage-length=0 -I $WORK/command-line-arguments/_obj/ -g -O2 -fsplit-stack -o $WORK/command-line-arguments/_obj/_cgo_main.o -c $WORK/command-line-arguments/_obj/_cgo_main.c
gcc -I . -fPIC -m32 -pthread -fmessage-length=0 -I $WORK/command-line-arguments/_obj/ -g -O2 -fsplit-stack -o $WORK/command-line-arguments/_obj/_cgo_export.o -c $WORK/command-line-arguments/_obj/_cgo_export.c
gcc -I . -fPIC -m32 -pthread -fmessage-length=0 -I $WORK/command-line-arguments/_obj/ -g -O2 -fsplit-stack -o $WORK/command-line-arguments/_obj/test.cgo2.o -c $WORK/command-line-arguments/_obj/test.cgo2.c
gcc -I . -fPIC -m32 -pthread -fmessage-length=0 -o $WORK/command-line-arguments/_obj/_cgo_.o $WORK/command-line-arguments/_obj/_cgo_main.o $WORK/command-line-arguments/_obj/_cgo_export.o $WORK/command-line-arguments/_obj/test.cgo2.o -g -O2
/usr/bin/gccgo -I $WORK -c -g -m32 -fgo-relative-import-path=_/home/joe/Desktop -o $WORK/command-line-arguments/_obj/_go_.o -fPIC $WORK/command-line-arguments/_obj/_cgo_gotypes.go $WORK/command-line-arguments/_obj/test.cgo1.go
ar rc $WORK/libcommand-line-arguments.a $WORK/command-line-arguments/_obj/_go_.o $WORK/command-line-arguments/_obj/_cgo_defun.o $WORK/command-line-arguments/_obj/_cgo_export.o $WORK/command-line-arguments/_obj/test.cgo2.o
cd .
/usr/bin/gccgo -o $WORK/command-line-arguments/_obj/exe/a.out $WORK/command-line-arguments/_obj/_go_.o $WORK/command-line-arguments/_obj/_cgo_defun.o $WORK/command-line-arguments/_obj/_cgo_export.o $WORK/command-line-arguments/_obj/test.cgo2.o -Wl,-( -m32 -Wl,--whole-archive -Wl,--no-whole-archive -Wl,-) -shared -nostdlib -Wl,--whole-archive -lgolibbegin -Wl,--no-whole-archive -lgo -lgcc_s -lgcc -fPIC
# command-line-arguments
/tmp/go-build459779134/command-line-arguments/_obj/_cgo_defun.c:33: error: undefined reference to '__stack_chk_fail_local'
/tmp/go-build459779134/command-line-arguments/_obj/_cgo_defun.c:37: error: undefined reference to '__stack_chk_fail_local'
/tmp/go-build459779134/command-line-arguments/_obj/_cgo_defun.c:42: error: undefined reference to '__stack_chk_fail_local'
/tmp/go-build459779134/command-line-arguments/_obj/_cgo_defun.c:72: error: undefined reference to '__stack_chk_fail_local'
collect2: error: ld returned 1 exit status```

@OneOfOne
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This seems like a stack-protector issue from an old gcc, does passing -fno-stack-protector -D_FORTIFY_SOURCE=0 -lssp to gcc fix the issue?

@gopherbot
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CL https://golang.org/cl/18592 mentions this issue.

@golang golang locked and limited conversation to collaborators Jan 13, 2017
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