lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/lib/mlibc/tests/rtdl/noload-promote/test.c b/lib/mlibc/tests/rtdl/noload-promote/test.c
new file mode 100644
index 0000000..0a6c55c
--- /dev/null
+++ b/lib/mlibc/tests/rtdl/noload-promote/test.c
@@ -0,0 +1,22 @@
+#include <dlfcn.h>
+#include <assert.h>
+#include <stddef.h>
+
+#ifdef USE_HOST_LIBC
+#define LIBFOO "libnative-foo.so"
+#else
+#define LIBFOO "libfoo.so"
+#endif
+
+int main() {
+	void *foo = dlopen(LIBFOO, RTLD_LOCAL | RTLD_NOW);
+	assert(foo);
+
+	assert(dlsym(RTLD_DEFAULT, "foo") == NULL);
+
+	// Opening a library with RTLD_NOLOAD | RTLD_GLOBAL should promote it to the global scope.
+	assert(dlopen(LIBFOO, RTLD_NOLOAD | RTLD_GLOBAL | RTLD_NOW) == foo);
+	assert(dlsym(RTLD_DEFAULT, "foo") != NULL);
+	
+	assert(dlopen("does-not-exist.so.1337", RTLD_NOLOAD | RTLD_GLOBAL | RTLD_NOW) == NULL);
+}