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mold/test/ifunc-dynamic.sh
2021-08-23 09:21:31 +00:00

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#!/bin/bash
set -e
cd $(dirname $0)
mold=`pwd`/../mold
echo -n "Testing $(basename -s .sh $0) ... "
t=$(pwd)/tmp/$(basename -s .sh $0)
mkdir -p $t
# Skip if libc is musl because musl does not support GNU FUNC
echo 'int main() {}' | cc -o $t/exe -xc -
ldd $t/exe | grep -q ld-musl && { echo OK; exit; }
cat <<EOF | cc -o $t/a.o -c -xc -
#include <stdio.h>
__attribute__((ifunc("resolve_foobar")))
static void foobar(void);
static void real_foobar(void) {
printf("Hello world\n");
}
typedef void Func();
static Func *resolve_foobar(void) {
return real_foobar;
}
int main() {
foobar();
}
EOF
clang -fuse-ld=$mold -o $t/exe $t/a.o
$t/exe | grep -q 'Hello world'
echo OK