[coroutines] Add feature-test macro for coroutines, defined to 1 to indicate
the implementation is incomplete.
llvm-svn: 250982
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 0b445e8..dc07579 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -456,6 +456,8 @@
Builder.defineMacro("__cpp_sized_deallocation", "201309");
if (LangOpts.ConceptsTS)
Builder.defineMacro("__cpp_experimental_concepts", "1");
+ if (LangOpts.Coroutines)
+ Builder.defineMacro("__cpp_coroutines", "1");
}
static void InitializePredefinedMacros(const TargetInfo &TI,