From e37208ce86916af9510ffb9ce7b3c187986f07de Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Sat, 22 Oct 2016 17:33:26 +0200
Subject: math.h: Wrap C++ bits in extern "C++"

It is still common to include system header files in an extern "C"
block.  This means that exiting <math.h>'s own extern "C" block
is not sufficient to get back to C++ mode.  Use an extern "C++"
wrapper instead.
---
 math/math.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'math')

diff --git a/math/math.h b/math/math.h
index 0220d08d8a..7c0c709523 100644
--- a/math/math.h
+++ b/math/math.h
@@ -342,7 +342,7 @@ enum
 #   define iszero(x) (((__typeof (x)) (x)) == 0)
 #  endif
 # else	/* __cplusplus */
-__END_DECLS
+extern "C++" {
 template <class __T> inline bool
 iszero (__T __val)
 {
@@ -352,7 +352,7 @@ iszero (__T __val)
   return __val == 0;
 #  endif
 }
-__BEGIN_DECLS
+} /* extern C++ */
 # endif	/* __cplusplus */
 #endif /* Use IEC_60559_BFP_EXT.  */
 
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