* Similar, but different, in iwyu_verrs.h, the only use of raw_ostream is in an unexpanded macro. Use IWYU pragmas to deal with these weaknesses: * "pragma: no_include" to avoid pulling in implementation detail headers misdiagnosed by IWYU * "pragma: keep" to force IWYU to re...
// A SourceLocation is a compact encoding of a location in a // particular #include of a source file. From it you can find the // file path, line number, column number, and which file (if any) // #includes the file. #ifndef INCLUDE_WHAT_YOU_USE_IWYU_LOCATION_UTIL_H_ #define ...
defined (...) too ... but then one has to type the macro within the bracket, which is a bit cumbersome. 'ifndef' is the closest approach to C# way of doing regions. Moreover, the IDE smartly starts showing this 'region' as a collapsible part of code with a '+' sign along l...
Programming Basic--what's the use of "ifndef/define/endif"; to avoid that the head file is referenced more than twice. 分类:Interview Dictionary for Developer,C/C++ 飞天舞者 粉丝-19关注 -0 +加关注 posted on2008-02-26 08:51飞天舞者阅读(200) 评论(0)编辑收藏举报 刷新页面返回顶部 编辑推荐...
Pre-processing:First, the pre-processor reads the source code and performs macro expansions, inclusion of header files, and other operations as specified by pre-processor directives (#include, #define,#ifndef, etc.). Compilation:Second step performs the actual translation of the source ...
My clang 5.0 pretends that it is a very old gcc, so it probably gets the old builtins which can't express relaxed stores, etc. I think we also need something along these lines: #ifndef __has_builtin # define __has_builtin(x) 0 #endif #if __TBB_GCC_VERSION < XXXXX || ...
You should drop the parents: "sizeof arr" is enough; sizeof is not a function. - unwind (23) If you're using C++, you shouldn't be using arrays at all. Use vectors. - Rocketmagnet How come the macro works with char arr[10] but not with char *arr ? - Naseer (7) @Nasee...
is defined before you try to use it. And because you have the contents of this.h protected with the #ifndef, there's no harm done if source.c does #include this.h, whether it's before or after that.h 2: Get rid of the underscores at the beginning of ...
这是Ulrich Drepper的经典文章的英文原版,Ulrich Drepper是著名的德国工程师,是Glibc的第一代大当家(由于独断专行现在已经被褫夺了全力)。此文图文并茂的介绍了 RAM/DRAM的硬件原理、CPU的多级缓存机制、DMA原理等,是理解CPU基础机制的宝典。
AC_MSG_ERROR([The name of the default SSL backend is required.]) ;; *) dnl --with-default-ssl-backend option used with name AC_SUBST(DEFAULT_SSL_BACKEND) dnl needs to be validated below VALID_DEFAULT_SSL_BACKEND=no ;; ...