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| //===-- interception_linux_test.cpp ---------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer/AddressSanitizer runtime.
// Tests for interception_linux.h.
//
//===----------------------------------------------------------------------===//
// Do not declare isdigit in ctype.h.
#define __NO_CTYPE
#include "interception/interception.h"
#include "gtest/gtest.h"
// Too slow for debug build
#if !SANITIZER_DEBUG
#if SANITIZER_LINUX
static int InterceptorFunctionCalled;
DECLARE_REAL(int, isdigit, int);
INTERCEPTOR(int, isdigit, int d) {
++InterceptorFunctionCalled;
return d >= '0' && d <= '9';
}
namespace __interception {
TEST(Interception, InterceptFunction) {
uptr malloc_address = 0;
EXPECT_TRUE(InterceptFunction("malloc", &malloc_address, 0, 0));
EXPECT_NE(0U, malloc_address);
EXPECT_FALSE(InterceptFunction("malloc", &malloc_address, 0, 1));
uptr dummy_address = 0;
EXPECT_FALSE(InterceptFunction("dummy_doesnt_exist__", &dummy_address, 0, 0));
EXPECT_EQ(0U, dummy_address);
}
TEST(Interception, Basic) {
EXPECT_TRUE(INTERCEPT_FUNCTION(isdigit));
// After interception, the counter should be incremented.
InterceptorFunctionCalled = 0;
EXPECT_NE(0, isdigit('1'));
EXPECT_EQ(1, InterceptorFunctionCalled);
EXPECT_EQ(0, isdigit('a'));
EXPECT_EQ(2, InterceptorFunctionCalled);
// Calling the REAL function should not affect the counter.
InterceptorFunctionCalled = 0;
EXPECT_NE(0, REAL(isdigit)('1'));
EXPECT_EQ(0, REAL(isdigit)('a'));
EXPECT_EQ(0, InterceptorFunctionCalled);
}
} // namespace __interception
#endif // SANITIZER_LINUX
#endif // #if !SANITIZER_DEBUG
|