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trying to link object compiled with -O0 fails: malformed elf file: _Z8getblockPKji: invalid symbol binding 2 #1500

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alberts opened this issue Feb 11, 2011 · 4 comments
Closed

trying to link object compiled with -O0 fails: malformed elf file: _Z8getblockPKji: invalid symbol binding 2 #1500

alberts opened this issue Feb 11, 2011 · 4 comments
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@alberts
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alberts commented Feb 11, 2011 

What steps will reproduce the problem?

tar -zxvf murmur3.tar.gz
cd murmur3
make nuke
make
make test

What is the expected output?

test should pass

What do you see instead?

_test/murmur3.a(MurmurHash3.o): malformed elf file: _Z8getblockPKji: invalid symbol
binding 2
_test/murmur3.a(murmur3_amd64.cgo2.o)(.text): MurmurHash3_x64_64: not defined
_test/murmur3.a(murmur3_amd64.cgo2.o)(.text): MurmurHash3_x64_32: not defined
_test/murmur3.a(murmur3_amd64.cgo2.o)(.text): MurmurHash3_x64_128: not defined

Which compiler are you using (5g, 6g, 8g, gccgo)?

6g

Which operating system are you using?

linux

Which revision are you using?  (hg identify)

tip

Please provide any additional information below.

Coming with anything above -O0 works.

Attachments:

  1. murmur3.tar.gz (3557 bytes)
@rsc
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rsc commented Feb 11, 2011

Comment 1:

Merge into issue: 1476
Same as last time: we don't have the manpower to
support C++ using cgo.  SWIG is the official solution.

Status changed to Duplicate.

@alberts
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alberts commented Feb 11, 2011

Comment 2:

Why does it work with -O2?

@rsc
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rsc commented Feb 11, 2011

Comment 3:

You'd have to ask a C++ expert.  Probably -O2 ends
up removing the offending function due to inlining or
something else.

@alberts
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alberts commented Feb 11, 2011

Comment 4:

Okay, thanks.

@golang golang locked and limited conversation to collaborators Jun 24, 2016
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@rsc @alberts @gopherbot