> (unless the standard says compilers should ignore the `#pragma` if they don't understand it, but I confess haven't checked). It does (Section 15.9 [cpp.pragm

> (unless the standard says compilers should ignore the `#pragma` if they don't understand it, but I confess haven't checked). It does (Section 15.9 [cpp.pragma]): > Any pragma that is not recognized by the implementation is ignored. However, Clang has the -Wunknown-pragmas warning which will fire on pragmas it doesn't recognize, so you'll probably want to do what gavinhoward does and guard non-Clang pragmas with compiler-specific #ifdefs.