1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <stdint.h> 18 19 #include <gtest/gtest.h> 20 21 #define UNW_LOCAL_ONLY 22 #include <libunwind.h> 23 24 #define EXTRA_CONTEXT_BYTES 1024 25 26 TEST(libbacktrace, getcontext_size) { 27 unw_context_t* context; 28 context = reinterpret_cast<unw_context_t*>(malloc(sizeof(unw_context_t) + EXTRA_CONTEXT_BYTES)); 29 ASSERT_TRUE(context != NULL); 30 uint8_t* extra = reinterpret_cast<uint8_t*>(reinterpret_cast<uintptr_t>(context) + sizeof(unw_context_t)); 31 for (size_t i = 0; i < EXTRA_CONTEXT_BYTES; i++) { 32 extra[i] = (i % 255) + 1; 33 } 34 ASSERT_TRUE(unw_getcontext(context) == 0); 35 /* Check that nothing was written past the end of the structure. */ 36 for (size_t i = 0; i < EXTRA_CONTEXT_BYTES; i++) { 37 ASSERT_EQ((i % 255) + 1, extra[i]); 38 } 39 40 free(context); 41 } 42
