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Improved dlsym tests and fixes to linker

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Answers the question: what if dependent library
 was preloaded with RTLD_LOCAL flag.

 Also add test for RTLD_NEXT within local_group.

Bug: http://b/17512583
Change-Id: I79e081e68b3a8c0ed8980d4275a06515fea94ec9
(cherry picked from commit 697bd9fd38)
This commit is contained in:
Dmitriy Ivanov
2015-05-12 11:12:27 -07:00
parent 9cde1dc007
commit 4bac6ea463
6 changed files with 170 additions and 48 deletions
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52
tests/libs/dlsym_from_this_functions.cpp Normal file
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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <dlfcn.h>
#include <stdio.h>
extern int test_dlsym_symbol;
int test_dlsym_symbol = -1;
extern "C" int* lookup_dlsym_symbol_using_RTLD_DEFAULT() {
dlerror();
int* result = static_cast<int*>(dlsym(RTLD_DEFAULT, "test_dlsym_symbol"));
// TODO: remove this once b/20049306 is fixed
if (result == nullptr) {
printf("Cannot find the answer\n");
}
return result;
}
extern "C" int* lookup_dlsym_symbol2_using_RTLD_DEFAULT() {
dlerror();
int* result = static_cast<int*>(dlsym(RTLD_DEFAULT, "test_dlsym_symbol2"));
// TODO: remove this once b/20049306 is fixed
if (result == nullptr) {
printf("Cannot find the answer\n");
}
return result;
}
extern "C" int* lookup_dlsym_symbol_using_RTLD_NEXT() {
dlerror();
int* result = static_cast<int*>(dlsym(RTLD_NEXT, "test_dlsym_symbol"));
// TODO: remove this once b/20049306 is fixed
if (result == nullptr) {
printf("Cannot find the answer\n");
}
return result;
}