用vs2017编译时一直报错：
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[build] ..\host\windows\syscall.c(548): error C2017: illegal escape sequence [build] ..\host\windows\syscall.c(552): error C2017: illegal escape sequence [build] ..\host\windows\syscall.c(563): error C2017: illegal escape sequence [build] ..\host\windows\syscall.c(567): error C2017: illegal escape sequence [build] ..\host\windows\syscall.c(588): error C2017: illegal escape sequence [build] ..\host\windows\syscall.c(591): error C2017: illegal escape sequence [build] ..\host\windows\syscall.c(595): error C2017: illegal escape sequence [build] [21/1662 1% :: 1.162] Building C object enclave\core\CMakeFiles\oecore.dir\sgx\thread.c.obj [build] [21/1662 1% :: 1.177] Building C object enclave\core\CMakeFiles\oecore.dir\sgx\getkey.S.obj [build] [21/1662 1% :: 1.287] Building C object enclave\core\CMakeFiles\oecore.dir\sgx\tracee.c.obj [build] [21/1662 1% :: 1.321] Building C object enclave\core\CMakeFiles\oecore.dir\sgx\td_basic.c.obj [build] [21/1662 1% :: 1.344] Creating directories for 'libcxx_includes' [build] ninja: build stopped: subcommand failed. [build] Build finished with exit code 1 |
原来是因为宏定义时转义符后面多了个空格：
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alvin@chen ~/openenclave/host/windows$ cat -A syscall.c | head -n 27 // Copyright (c) Open Enclave SDK contributors.$ // Licensed under the MIT License.$ $ /*$ **==============================================================================$ **$ ** windows/syscall.c:$ **$ ** This file implements SYSCALL OCALLs for Windows. Most of these are stubs$ ** which are still under development.$ **$ **==============================================================================$ */$ #define _WINSOCK_DEPRECATED_NO_WARNINGS$ $ #define CHECK(exe) \ $ do \$ { \$ int retval = (exe); \$ if (retval != 0) \$ { \$ fprintf(stderr, "Runtime error: %x \nAt %s:%d", \$ GetLastError(), __FILE__, __LINE__); \$ return NULL; \$ } \$ } while (0)$ |
这么隐蔽的问题，显然是隐患。
在.vimrc中添加高亮：
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alvin@chen ~/openenclave/host/windows $ tail -n 2 ~/.vimrc highlight WhitespaceEOL ctermbg=red guibg=red match WhitespaceEOL /\s\+$/ alvin@chen ~/openenclave/host/windows$ |
显示效果如下：
