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#!/usr/bin/env bash
# Copyright 2015 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
# This directory is intended to test the use of Go with sanitizers
# like msan, asan, etc. See https://github.com/google/sanitizers .
set -e
# The sanitizers were originally developed with clang, so prefer it.
CC=cc
if test -x "$(type -p clang)"; then
CC=clang
fi
export CC
if [ "$(sysctl -n vm.overcommit_memory)" = 2 ]; then
echo "skipping msan/tsan tests: vm.overcommit_memory=2" >&2
exit 0
fi
msan=yes
TMPDIR=${TMPDIR:-/tmp}
echo 'int main() { return 0; }' > ${TMPDIR}/testsanitizers$$.c
if $CC -fsanitize=memory -o ${TMPDIR}/testsanitizers$$ ${TMPDIR}/testsanitizers$$.c 2>&1 | grep "unrecognized" >& /dev/null; then
echo "skipping msan tests: $CC -fsanitize=memory not supported"
msan=no
elif ! test -x ${TMPDIR}/testsanitizers$$; then
echo "skipping msan tests: $CC -fsanitize-memory did not generate an executable"
msan=no
elif ! ${TMPDIR}/testsanitizers$$ >/dev/null 2>&1; then
echo "skipping msan tests: $CC -fsanitize-memory generates broken executable"
msan=no
fi
rm -f ${TMPDIR}/testsanitizers$$.*
tsan=yes
# The memory and thread sanitizers in versions of clang before 3.6
# don't work with Go.
if test "$msan" = "yes" && $CC --version | grep clang >& /dev/null; then
ver=$($CC --version | sed -e 's/.* version \([0-9.-]*\).*/\1/')
major=$(echo $ver | sed -e 's/\([0-9]*\).*/\1/')
minor=$(echo $ver | sed -e 's/[0-9]*\.\([0-9]*\).*/\1/')
if test "$major" -lt 3 || test "$major" -eq 3 -a "$minor" -lt 6; then
echo "skipping msan/tsan tests: clang version $major.$minor (older than 3.6)"
msan=no
tsan=no
fi
# Clang before 3.8 does not work with Linux at or after 4.1.
# golang.org/issue/12898.
if test "$msan" = "yes" -a "$major" -lt 3 || test "$major" -eq 3 -a "$minor" -lt 8; then
if test "$(uname)" = Linux; then
linuxver=$(uname -r)
linuxmajor=$(echo $linuxver | sed -e 's/\([0-9]*\).*/\1/')
linuxminor=$(echo $linuxver | sed -e 's/[0-9]*\.\([0-9]*\).*/\1/')
if test "$linuxmajor" -gt 4 || test "$linuxmajor" -eq 4 -a "$linuxminor" -ge 1; then
echo "skipping msan/tsan tests: clang version $major.$minor (older than 3.8) incompatible with linux version $linuxmajor.$linuxminor (4.1 or newer)"
msan=no
tsan=no
fi
fi
fi
fi
status=0
testmsanshared() {
goos=$(go env GOOS)
suffix="-installsuffix testsanitizers"
libext="so"
if [ "$goos" = "darwin" ]; then
libext="dylib"
fi
go build -msan -buildmode=c-shared $suffix -o ${TMPDIR}/libmsanshared.$libext msan_shared.go
echo 'int main() { return 0; }' > ${TMPDIR}/testmsanshared.c
$CC $(go env GOGCCFLAGS) -fsanitize=memory -o ${TMPDIR}/testmsanshared ${TMPDIR}/testmsanshared.c ${TMPDIR}/libmsanshared.$libext
if ! LD_LIBRARY_PATH=. ${TMPDIR}/testmsanshared; then
echo "FAIL: msan_shared"
status=1
fi
rm -f ${TMPDIR}/{testmsanshared,testmsanshared.c,libmsanshared.$libext}
}
if test "$msan" = "yes"; then
if ! go build -msan std; then
echo "FAIL: build -msan std"
status=1
fi
if ! go run -msan msan.go; then
echo "FAIL: msan"
status=1
fi
if ! CGO_LDFLAGS="-fsanitize=memory" CGO_CPPFLAGS="-fsanitize=memory" go run -msan -a msan2.go; then
echo "FAIL: msan2 with -fsanitize=memory"
status=1
fi
if ! go run -msan -a msan2.go; then
echo "FAIL: msan2"
status=1
fi
if ! go run -msan msan3.go; then
echo "FAIL: msan3"
status=1
fi
if ! go run -msan msan4.go; then
echo "FAIL: msan4"
status=1
fi
if ! go run -msan msan5.go; then
echo "FAIL: msan5"
status=1
fi
if go run -msan msan_fail.go 2>/dev/null; then
echo "FAIL: msan_fail"
status=1
fi
testmsanshared
fi
testtsanshared() {
goos=$(go env GOOS)
suffix="-installsuffix tsan"
libext="so"
if [ "$goos" = "darwin" ]; then
libext="dylib"
fi
go build -buildmode=c-shared $suffix -o ${TMPDIR}/libtsanshared.$libext tsan_shared.go
echo 'int main() { return 0; }' > ${TMPDIR}/testtsanshared.c
$CC $(go env GOGCCFLAGS) -fsanitize=thread -o ${TMPDIR}/testtsanshared ${TMPDIR}/testtsanshared.c ${TMPDIR}/libtsanshared.$libext
if ! LD_LIBRARY_PATH=. ${TMPDIR}/testtsanshared; then
echo "FAIL: tsan_shared"
status=1
fi
rm -f ${TMPDIR}/{testtsanshared,testtsanshared.c,libtsanshared.$libext}
}
if test "$tsan" = "yes"; then
echo 'int main() { return 0; }' > ${TMPDIR}/testsanitizers$$.c
ok=yes
if ! $CC -fsanitize=thread ${TMPDIR}/testsanitizers$$.c -o ${TMPDIR}/testsanitizers$$ &> ${TMPDIR}/testsanitizers$$.err; then
ok=no
fi
if grep "unrecognized" ${TMPDIR}/testsanitizers$$.err >& /dev/null; then
echo "skipping tsan tests: -fsanitize=thread not supported"
tsan=no
elif test "$ok" != "yes"; then
cat ${TMPDIR}/testsanitizers$$.err
echo "skipping tsan tests: -fsanitizer=thread build failed"
tsan=no
elif ! ${TMPDIR}/testsanitizers$$ 2>&1; then
echo "skipping tsan tests: running tsan program failed"
tsan=no
fi
rm -f ${TMPDIR}/testsanitizers$$*
fi
# Run a TSAN test.
# $1 test name
# $2 environment variables
# $3 go run args
testtsan() {
err=${TMPDIR}/tsanerr$$.out
if ! env $2 go run $3 $1 2>$err; then
cat $err
echo "FAIL: $1"
status=1
elif grep -i warning $err >/dev/null 2>&1; then
cat $err
echo "FAIL: $1"
status=1
fi
rm -f $err
}
if test "$tsan" = "yes"; then
testtsan tsan.go
testtsan tsan2.go
testtsan tsan3.go
testtsan tsan4.go
testtsan tsan8.go
testtsan tsan9.go
# These tests are only reliable using clang or GCC version 7 or later.
# Otherwise runtime/cgo/libcgo.h can't tell whether TSAN is in use.
ok=false
clang=false
if ${CC} --version | grep clang >/dev/null 2>&1; then
ok=true
clang=true
else
ver=$($CC -dumpversion)
major=$(echo $ver | sed -e 's/\([0-9]*\).*/\1/')
if test "$major" -lt 7; then
echo "skipping remaining TSAN tests: GCC version $major (older than 7)"
else
ok=true
fi
fi
if test "$ok" = "true"; then
# These tests require rebuilding os/user with -fsanitize=thread.
testtsan tsan5.go "CGO_CFLAGS=-fsanitize=thread CGO_LDFLAGS=-fsanitize=thread" "-installsuffix=tsan"
testtsan tsan6.go "CGO_CFLAGS=-fsanitize=thread CGO_LDFLAGS=-fsanitize=thread" "-installsuffix=tsan"
testtsan tsan7.go "CGO_CFLAGS=-fsanitize=thread CGO_LDFLAGS=-fsanitize=thread" "-installsuffix=tsan"
# The remaining tests reportedly hang when built with GCC; issue #21196.
if test "$clang" = "true"; then
testtsan tsan10.go "CGO_CFLAGS=-fsanitize=thread CGO_LDFLAGS=-fsanitize=thread" "-installsuffix=tsan"
testtsan tsan11.go "CGO_CFLAGS=-fsanitize=thread CGO_LDFLAGS=-fsanitize=thread" "-installsuffix=tsan"
testtsan tsan12.go "CGO_CFLAGS=-fsanitize=thread CGO_LDFLAGS=-fsanitize=thread" "-installsuffix=tsan"
fi
testtsanshared
fi
fi
exit $status
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