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authorMike Frysinger <vapier@gentoo.org>2007-03-12 19:22:52 +0000
committerMike Frysinger <vapier@gentoo.org>2007-03-12 19:22:52 +0000
commit458e37f68e1836e456e1b6a4e383f53476a0c2f1 (patch)
tree2821cff4bd6be7eb1a3d3ac029d885004fec7b15 /test/dlopen/dlundef.c
parent3c744cd1780793df6193f3b83630702b35ab1e02 (diff)
make sure dlsym() properly returns NULL with undefined symbols
Diffstat (limited to 'test/dlopen/dlundef.c')
-rw-r--r--test/dlopen/dlundef.c29
1 files changed, 29 insertions, 0 deletions
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;
+}