1 //===-- Loader test to check if tls size is read correctly ----------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "src/errno/libc_errno.h" 10 #include "src/sys/mman/mmap.h" 11 #include "test/IntegrationTest/test.h" 12 13 #include <sys/mman.h> 14 15 constexpr int threadLocalDataSize = 101; 16 _Thread_local int a[threadLocalDataSize] = {123}; 17 18 TEST_MAIN(int argc, char **argv, char **envp) { 19 ASSERT_TRUE(a[0] == 123); 20 21 for (int i = 1; i < threadLocalDataSize; ++i) 22 a[i] = i; 23 for (int i = 1; i < threadLocalDataSize; ++i) 24 ASSERT_TRUE(a[i] == i); 25 26 // Call mmap with bad params so that an error value is 27 // set in errno. Since errno is implemented using a thread 28 // local var, this helps us test setting of errno and 29 // reading it back. 30 ASSERT_ERRNO_SUCCESS(); 31 void *addr = LIBC_NAMESPACE::mmap(nullptr, 0, PROT_READ, 32 MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); 33 ASSERT_TRUE(addr == MAP_FAILED); 34 ASSERT_ERRNO_EQ(EINVAL); 35 36 return 0; 37 } 38