1 //===-- interception_linux_test.cc ----------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file is a part of ThreadSanitizer/AddressSanitizer runtime. 11 // Tests for interception_linux.h. 12 // 13 //===----------------------------------------------------------------------===// 14 #include "interception/interception.h" 15 16 #include "gtest/gtest.h" 17 18 // Too slow for debug build 19 #if !SANITIZER_DEBUG 20 #if SANITIZER_LINUX 21 22 static int InterceptorFunctionCalled; 23 24 DECLARE_REAL(int, isdigit, int); 25 26 INTERCEPTOR(int, isdigit, int d) { 27 ++InterceptorFunctionCalled; 28 return d >= '0' && d <= '9'; 29 } 30 31 namespace __interception { 32 33 TEST(Interception, GetRealFunctionAddress) { 34 uptr expected_malloc_address = (uptr)(void*)&malloc; 35 uptr malloc_address = 0; 36 EXPECT_TRUE(GetRealFunctionAddress("malloc", &malloc_address, 0, 0)); 37 EXPECT_EQ(expected_malloc_address, malloc_address); 38 39 uptr dummy_address = 0; 40 EXPECT_TRUE( 41 GetRealFunctionAddress("dummy_doesnt_exist__", &dummy_address, 0, 0)); 42 EXPECT_EQ(0U, dummy_address); 43 } 44 45 TEST(Interception, Basic) { 46 ASSERT_TRUE(INTERCEPT_FUNCTION(isdigit)); 47 48 // After interception, the counter should be incremented. 49 InterceptorFunctionCalled = 0; 50 EXPECT_NE(0, isdigit('1')); 51 EXPECT_EQ(1, InterceptorFunctionCalled); 52 EXPECT_EQ(0, isdigit('a')); 53 EXPECT_EQ(2, InterceptorFunctionCalled); 54 55 // Calling the REAL function should not affect the counter. 56 InterceptorFunctionCalled = 0; 57 EXPECT_NE(0, REAL(isdigit)('1')); 58 EXPECT_EQ(0, REAL(isdigit)('a')); 59 EXPECT_EQ(0, InterceptorFunctionCalled); 60 } 61 62 } // namespace __interception 63 64 #endif // SANITIZER_LINUX 65 #endif // #if !SANITIZER_DEBUG 66
