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-rw-r--r--clang/lib/Frontend/InitPreprocessor.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 9257dcae84c..08befb33c96 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -535,7 +535,7 @@ static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
if (LangOpts.ConceptsTS)
Builder.defineMacro("__cpp_experimental_concepts", "1");
if (LangOpts.CoroutinesTS)
- Builder.defineMacro("__cpp_coroutines", "1");
+ Builder.defineMacro("__cpp_coroutines", "201703L");
}
static void InitializePredefinedMacros(const TargetInfo &TI,
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