bionic libc test: clean up test for dlopen_null

The test for dlopen function with null specified have been
re-implemented by dlfcn.dladdr test in bionic/tests/dlfcn_test.cpp.
so here deleted it for cleaning up

Change-Id: I99c3d1d2252b41c7484310fa20a1298d80ad565c
Signed-off-by: Yongqin Liu <yongqin.liu@linaro.org>

2 files changed, 0 insertions, 56 deletions

diff --git a/tests/bionic/libc/Android.mk b/tests/bionic/libc/Android.mk
index 647c1417..255fde58 100644
--- a/tests/bionic/libc/Android.mk
+++ b/tests/bionic/libc/Android.mk
@@ -97,25 +97,6 @@ LOCAL_MODULE_TAGS := tests
 LOCAL_LDFLAGS := -static
 include $(BUILD_HOST_EXECUTABLE)
 
-# The 'test_dlopen_null' tests requires specific linker flags
-#
-# The -Wl,--export-dynamic ensures that dynamic symbols are
-# exported from the executable.
-#
-# -Wl,-u,foo is used to ensure that symbol "foo" is not
-# garbage-collected by the gold linker, since the function
-# appears to be unused.
-#
-sources := common/test_dlopen_null.c \
-
-EXTRA_LDLIBS := -ldl -Wl,--export-dynamic -Wl,-u,foo
-EXTRA_CFLAGS := -DHOST
-$(call host-test, $(sources))
-
-EXTRA_LDLIBS := -ldl -Wl,--export-dynamic -Wl,-u,foo
-$(call device-test, $(sources))
-
-
 # Second, the Bionic-specific tests
 
 sources :=  \
diff --git a/tests/bionic/libc/common/test_dlopen_null.c b/tests/bionic/libc/common/test_dlopen_null.c
deleted file mode 100644
index 42b23dd3..00000000
--- a/tests/bionic/libc/common/test_dlopen_null.c
+++ /dev/null
@@ -1,37 +0,0 @@
-#include <dlfcn.h>
-#include <stddef.h>
-#include <stdio.h>
-
-extern int foo(void)
-{
-    return 42;
-}
-
-int (*func_ptr)(void) = foo;
-
-int main(void)
-{
-    void*  lib = dlopen(NULL, RTLD_NOW | RTLD_GLOBAL);
-    void*  symbol;
-
-#if 0
-    /* The Gold linker will garbage-collect unused global functions
-     * even if --Wl,--export-dynamic is used. So use a dummy global
-     * variable reference here to prevent this.
-     */
-    if (foo() != 42)
-        return 3;
-#endif
-
-    if (lib == NULL) {
-        fprintf(stderr, "Could not open self-executable with dlopen(NULL) !!: %s\n", dlerror());
-        return 1;
-    }
-    symbol = dlsym(lib, "foo");
-    if (symbol == NULL) {
-        fprintf(stderr, "Could not lookup symbol inside executable !!: %s\n", dlerror());
-        return 2;
-    }
-    dlclose(lib);
-    return 0;
-}