[clang] Fix broken include_next in float.h

Summary:
The code defines __FLOAT_H and then includes the next <float.h>, which is
guarded on __FLOAT_H so it gets skipped entirely. This commit uses the header
guard __CLANG_FLOAT_H, like other headers (such as limits.h) do.

Reviewers: jfb

Subscribers: dexonsmith, cfe-commits

Differential Revision: https://reviews.llvm.org/D50276

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@339016 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Headers/float.h b/lib/Headers/float.h
index 44d4d05494f5d1209f37de1e9576ef95d718d9b9..c04cbbf47eb734dc5774a2d5a07b7fa8a812def7 100644 (file)
--- a/lib/Headers/float.h
+++ b/lib/Headers/float.h
@@ -21,8 +21,8 @@
  *===-----------------------------------------------------------------------===
  */
 
-#ifndef __FLOAT_H
-#define __FLOAT_H
+#ifndef __CLANG_FLOAT_H
+#define __CLANG_FLOAT_H
 
 /* If we're on MinGW, fall back to the system's float.h, which might have
  * additional definitions provided for Windows.
@@ -157,4 +157,4 @@
 #  define FLT16_TRUE_MIN    __FLT16_TRUE_MIN__
 #endif /* __STDC_WANT_IEC_60559_TYPES_EXT__ */
 
-#endif /* __FLOAT_H */
+#endif /* __CLANG_FLOAT_H */