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build: run cgo tests with -pie if the external linker supports it. 

PIE binaries can be built by the Go compiler in external link mode with
extldflags="-pie". These binaries support ASLR (address space layout
randomization) when executed on systems with appropriate kernel/dynamic
linker support.

This CL enables some cgo tests to run with -pie as a sanity check (in
addition to the other linker flag combinations they already test).

I have tested this functionality more thoroughly by building the full
compiler testsuite (test/...) and standard library tests with -pie
and executing them remotely on ChromeOS devices for all three linux
architectures (linux_amd64, linux_386, and linux_arm).

Change-Id: I3f644a72e94c3341f3360dfee58db5ec3a591e26
Reviewed-on: https://go-review.googlesource.com/6280
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Rahul Chaudhry 2015-02-27 10:46:42 -08:00 committed by Ian Lance Taylor
parent d460b6e5c6
commit 612dd6c262
1 changed files with 7 additions and 0 deletions
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7
src/run.bash
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@ -158,6 +158,13 @@ android-arm | dragonfly-386 | dragonfly-amd64 | freebsd-386 | freebsd-amd64 | fr
go test -ldflags '-linkmode=external' ../nocgo || exit 1
go test -ldflags '-linkmode=external -extldflags "-static -pthread"' ../nocgo || exit 1
fi
if ! $CC -xc -o /dev/null -pie - 2>/dev/null <<<'int main() {}' ; then
echo "No support for -pie found, skip cgo PIE test."
else
go test -ldflags '-linkmode=external -extldflags "-pie"' || exit 1
go test -ldflags '-linkmode=external -extldflags "-pie"' ../testtls || exit 1
go test -ldflags '-linkmode=external -extldflags "-pie"' ../nocgo || exit 1
fi
;;
esac
;;