Add a test

test/protected-dynsym.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+set -e
+cd $(dirname $0)
+echo -n "Testing $(basename -s .sh $0) ... "
+t=$(pwd)/tmp/$(basename -s .sh $0)
+mkdir -p $t
+
+cat <<EOF | cc -fPIC -c -o $t/a.o -xc -
+extern int foo;
+EOF
+
+cat <<EOF | cc -fPIC -c -o $t/b.o -xc -
+__attribute__((visibility("protected"))) int foo;
+EOF
+
+clang -fuse-ld=`pwd`/../mold -shared -o $t/c.so $t/a.o $t/b.o -Wl,-strip-all
+readelf --symbols $t/c.so | grep -Pq 'PROTECTED\b.*\bfoo\b'
+
+echo OK