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-rw-r--r--test/Modules/Inputs/libc-libcxx/include/c++/math.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/test/Modules/Inputs/libc-libcxx/include/c++/math.h b/test/Modules/Inputs/libc-libcxx/include/c++/math.h
new file mode 100644
index 000000000000..890db371de66
--- /dev/null
+++ b/test/Modules/Inputs/libc-libcxx/include/c++/math.h
@@ -0,0 +1,2 @@
+#include_next <math.h>
+template<typename T> T abs(T t) { return (t < 0) ? -t : t; }