main.c   [plain text]

// BUILD:  mkdir -p $BUILD_DIR/dir $BUILD_DIR/good $BUILD_DIR/bad
// BUILD:  $CC good.c -dynamiclib -install_name @rpath/libtest.dylib     -o $BUILD_DIR/good/libtest.dylib
// BUILD:  $CC bad.c  -dynamiclib -install_name @rpath/libtest.dylib     -o $BUILD_DIR/bad/libtest.dylib
// BUILD:  $CC dyn.c  -dynamiclib -install_name @rpath/libdynamic.dylib  -o $BUILD_DIR/dir/libdynamic.dylib $BUILD_DIR/good/libtest.dylib -rpath @loader_path/../bad
// BUILD:  $CC main.c $BUILD_DIR/good/libtest.dylib -DRUN_DIR="$RUN_DIR" -o $BUILD_DIR/dlopen-rpath-prev-override.exe -rpath @loader_path/good

// RUN:  ./dlopen-rpath-prev-override.exe

// Processing of @rpath in dlopen()s always checks existing loaded images before using LC_RPATHs to find images on disk
//
// main links with @rpath/libtest.dylib found via -rpath @loader_path/good
// main dlopen()s libdynamic.dylib which links with @rpath/libtest.dylib and has LR_PATH to find it in bad/,
// but since it was already loaded from good/, that one should be re-used.

#include <stdio.h>
#include <dlfcn.h>

int main()
{
    printf("[BEGIN] dlopen-rpath-prev-override\n");

	void* handle = dlopen(RUN_DIR "/dir/libdynamic.dylib", RTLD_LAZY);
	if ( handle == NULL ) {
        printf("dlerror(): %s\n", dlerror());
        printf("[FAIL]  dlopen-rpath-prev-override\n");
		return 0;
	}

    printf("[PASS]  dlopen-rpath-prev-override\n");
	return 0;
}