make sure undefine references in dlopen()-ed libs are handled graciously

1 files changed, 36 insertions, 0 deletions

diff --git a/test/dlopen/dlafk.c b/test/dlopen/dlafk.c
new file mode 100644
index 000000000..2eac4afb2
--- /dev/null
+++ b/test/dlopen/dlafk.c
@@ -0,0 +1,36 @@
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <dlfcn.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+#define LIBNAME "libafk.so"
+
+#define LIBAFK "libafk-temp.so"
+#define LIBAFK_BAK ".libafk-temp.so.temp"
+
+int main(int argc, char **argv)
+{
+	void *handle;
+
+	if (rename(LIBAFK, LIBAFK_BAK)) {
+		fprintf(stderr, "Unable to rename %s: %s\n", LIBAFK, strerror(errno));
+		return EXIT_FAILURE;
+	}
+
+	handle = dlopen(LIBNAME, RTLD_NOW);
+	if (!handle) {
+		fprintf(stderr, "Could not open ./%s: %s\n", LIBNAME, dlerror());
+		return EXIT_FAILURE;
+	}
+
+	if (rename(LIBAFK_BAK, LIBAFK)) {
+		fprintf(stderr, "Unable to rename %s: %s\n", LIBAFK_BAK, strerror(errno));
+		return EXIT_FAILURE;
+	}
+
+	return EXIT_SUCCESS;
+}