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cmd/link: only create .init_array section if not empty

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This avoids a warning from old versions of the GNU linker or glibc.

No test because these old versions are not readily available.
I tested this by hand on CentOS 6.

Fixes #28722

Change-Id: I16640c9b83a79f759ec68fac64874803e74fbbfb
Reviewed-on: https://go-review.googlesource.com/c/153257
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Ian Lance Taylor 2018-12-07 14:19:01 -08:00
parent 6d43587053
commit a11aa2aaec
1 changed files with 1 additions and 1 deletions
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2
src/cmd/link/internal/ld/data.go
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@ -1313,7 +1313,7 @@ func (ctxt *Link) dodata() {
case BuildModeCArchive, BuildModeCShared, BuildModeShared, BuildModePlugin:
hasinitarr = true
}
if hasinitarr {
if hasinitarr && len(data[sym.SINITARR]) > 0 {
sect := addsection(ctxt.Arch, &Segdata, ".init_array", 06)
sect.Align = dataMaxAlign[sym.SINITARR]
datsize = Rnd(datsize, int64(sect.Align))