但是,我想知道除了’mark’之外是否还有其他关键字.比如,你能做#pragma somethingelse吗？提前致谢！
解决方法
>您可以控制诊断：
http://clang.llvm.org/docs/UsersManual.html#controlling-diagnostics-via-pragmas
>并从同一个链接：
clang supports the Microsoft “
#pragma pack” feature for controlling record layout. GCC also contains support for this feature,however where MSVC and GCC are incompatible clang follows the MSVC definition.clang supports the Microsoft
#pragma comment(lib,"foo.lib")feature for automatically linking against the specified library. Currently this feature only works with the Visual C++ linker.clang supports the Microsoft
#pragma comment(linker,"/flag:foo")feature for adding linker flags to COFF object files. The user is responsible for ensuring that the linker understands the flags.
但是,该列表中的第二个和第三个不适用于您的iOS代码.
>维基百科[link]说clang也支持#pragma一次.
最后,这是一个链接到clang API documentation的pragma处理代码.您可以从那里浏览以查看其他所有内容.特别是,TokenKinds.def描述了所有被接受的令牌,因此可能是完整的：
#pragma unused #pragma GCC visibility [push/pop] #pragma pack [value/show/push/pop/etc/etc/etc] #pragma clang __debug parser_crash #pragma clang __debug captured #pragma ms_struct [on/off] #pragma align [native/natural/mac68k/power/reset] #pragma weak [identifier] #pragma weak [identifier = identifier] // alias #pragma redefine_extname [identifier identifier] #pragma STDC FP_CONTRACT #pragma OPENCL EXTENSION #pragma omp [...] #pragma detect_mismatch #pragma comment
解析代码(见于ParsePragma.cpp)似乎表明并非所有这些代码都已实现,即使前端接受它们也是如此.
