此答案表明,lang后修订版165082应该保留AST中所有已解析的属性。
我首先认为这是指将保留所有属性,但是事实并非如此:
$ clang++ -v
Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
Target: x86_64-apple-darwin13.0.0
Thread model: posix
$ cat att.cpp
void f [[noreturn, foo]] () {}
$ clang++ att.cpp -Xclang -ast-dump -fsyntax-only -std=c++11
att.cpp:1:20: warning: unknown attribute 'foo' ignored [-Wattributes]
void f [[noreturn, foo]] () {}
^
att.cpp:1:30: warning: function declared 'noreturn' should not return [-Winvalid-noreturn]
void f [[noreturn, foo]] () {}
^
TranslationUnitDecl 0x102021cd0 <<invalid sloc>>
|-TypedefDecl 0x102022210 <<invalid sloc>> __int128_t '__int128' …Run Code Online (Sandbox Code Playgroud)