From 458e37f68e1836e456e1b6a4e383f53476a0c2f1 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Mon, 12 Mar 2007 19:22:52 +0000
Subject: make sure dlsym() properly returns NULL with undefined symbols

---
 test/dlopen/dlundef.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 test/dlopen/dlundef.c

(limited to 'test/dlopen/dlundef.c')

diff --git a/test/dlopen/dlundef.c b/test/dlopen/dlundef.c
new file mode 100644
index 000000000..cefd93318
--- /dev/null
+++ b/test/dlopen/dlundef.c
@@ -0,0 +1,29 @@
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <dlfcn.h>
+#include <stdint.h>
+
+#define LIBNAME "libundef.so"
+
+int main(int argc, char **argv)
+{
+	void *handle;
+	int (*myundefined)(void);
+
+	handle = dlopen(LIBNAME, RTLD_LAZY);
+	if (!handle) {
+		fprintf(stderr, "Could not open ./%s: %s\n", LIBNAME, dlerror());
+		return EXIT_FAILURE;
+	}
+
+	myundefined = dlsym(handle, "__booga_booga_you_cant_touch_this__");
+	if (myundefined != NULL) {
+		fprintf(stderr, "dlsym() found a symbol that does not exist!\n");
+		return EXIT_FAILURE;
+	}
+
+	dlclose(handle);
+
+	return EXIT_SUCCESS;
+}
-- 
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