Semonstrate a problem where weak symbols referenced in shared libs are not

being overridden when those same symbols _are_ overridden by other shared libs
in the main app.  Ick.
 -Erik

1 files changed, 45 insertions, 0 deletions

diff --git a/test/ldso/dlttest.c b/test/ldso/dlttest.c
new file mode 100644
index 000000000..591f5b56f
--- /dev/null
+++ b/test/ldso/dlttest.c
@@ -0,0 +1,45 @@
+#include <pthread.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <dlfcn.h>
+
+extern void _dlinfo();
+extern int __pthread_return_0 (void);
+#undef __UCLIBC__
+
+int main(int argc, char **argv) {
+	void *handle;
+	int (*myhowdy)(const char *s);
+	char *error;
+
+#ifdef __UCLIBC__
+	_dlinfo();   /* not supported by ld.so.2 */
+#endif
+
+	handle = dlopen ("./libhowdy.so", RTLD_LAZY);
+
+	if (!handle) {
+		fputs (dlerror(), stderr);
+		exit(1);
+	}
+
+	myhowdy = dlsym(handle, "howdy");
+	if ((error = dlerror()) != NULL)  {
+		fputs(error, stderr);
+		exit(1);
+	}
+
+#ifdef FORCE
+	printf("main:   __pthread_return_0 = %p\n", __pthread_return_0);
+#endif
+	myhowdy("hello world!\n");
+
+#ifdef __UCLIBC__
+	_dlinfo();   /* not supported by ld.so.2 */
+#endif
+
+	dlclose(handle);
+
+	return EXIT_SUCCESS;
+}