#!/bin/sh

# program
# <- liba.so
#    <- libb.so
#       <- libd.so
#
# Expected: dlsym(RTLD_NEXT) finds symbol in order liba.so, libb.so, libd.so


. test_setup


# create libd.so
cat > libd.c << EOI
int a() { return 1; }
EOI

# build
gcc -shared -o libd.so libd.c


# create libb.so
cat > libb.c << EOI
#define __USE_GNU
#include <dlfcn.h>
int
a()
{
	int (*nextA)();
	*(void**)&nextA = dlsym(RTLD_NEXT, "a");
	return (nextA != 0 ? nextA() : 0) + 2;
}
EOI

# build
gcc -shared -o libb.so libb.c -D_GNU_SOURCE ./libd.so $libdl


# create liba.so
cat > liba.c << EOI
#include <dlfcn.h>
int
a()
{
	int (*nextA)();
	*(void**)&nextA = dlsym(RTLD_NEXT, "a");
	return (nextA != 0 ? nextA() : 0) + 4;
}
EOI

# build
gcc -shared -o liba.so liba.c -D_GNU_SOURCE ./libb.so $libdl


# create program
cat > program.c << EOI

#include <dlfcn.h>
int
a()
{
	int (*nextA)();
	*(void**)&nextA = dlsym(RTLD_NEXT, "a");
	return (nextA != 0 ? nextA() : 0) + 8;
}

int
main()
{
	return a();
}
EOI

# build
gcc -o program program.c -D_GNU_SOURCE ./liba.so $libdl -Xlinker -rpath \
	-Xlinker .

# run
test_run_ok ./program 15