2 files changed, 19 insertions, 0 deletions
diff --git a/clang/test/Headers/Inputs/usr/include/float.h b/clang/test/Headers/Inputs/usr/include/float.h
new file mode 100644
index 00000000000..9dab891b972
--- /dev/null
+++ b/clang/test/Headers/Inputs/usr/include/float.h
@@ -0,0 +1,6 @@
+#ifndef SYSFLOAT_H
+#define SYSFLOAT_H
+
+#define FLT_HAS_SUBNORM 1
+
+#endif /* SYSFLOAT_H */
diff --git a/clang/test/Headers/float-darwin.c b/clang/test/Headers/float-darwin.c
new file mode 100644
index 00000000000..54bac1ac630
--- /dev/null
+++ b/clang/test/Headers/float-darwin.c
@@ -0,0 +1,13 @@
+// REQUIRES: system-darwin
+// RUN: %clang -target x86_64-apple-darwin10 -fsyntax-only -std=c11 -isysroot %S/Inputs %s
+#include <float.h>
+
+// Test the #include_next on float.h works on Darwin.
+#ifndef FLT_HAS_SUBNORM
+  #error "FLT_HAS_SUBNORM not defined"
+#endif
+
+// Test that definition from builtin are also present.
+#ifndef FLT_MAX
+  #error "FLT_MAX not defined"
+#endif