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-rw-r--r--ChangeLog16
-rw-r--r--NEWS2
-rw-r--r--conform/Makefile4
-rw-r--r--math/bits/mathcalls.h10
-rw-r--r--math/math.h6
-rw-r--r--math/tgmath.h2
6 files changed, 31 insertions, 9 deletions
diff --git a/ChangeLog b/ChangeLog
index 5053bf31d5..c3dafcf00e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,21 @@
 2015-09-15  Joseph Myers  <joseph@codesourcery.com>
 
+	[BZ #18967]
+	* math/math.h (__MATH_DECLARING_DOUBLE): New macro.  Define and
+	undefine around includes of <bits/mathcalls.h>.
+	* math/bits/mathcalls.h [!__USE_MISC && __USE_XOPEN2K] (isnan): Do
+	not declare function.
+	[!__USE_MISC && __USE_XOPEN2K] (gamma): Likewise.
+	[!__USE_MISC && (!__MATH_DECLARING_DOUBLE || __USE_XOPEN2K8)]
+	(scalb): Likewise.
+	* math/tgmath.h [!__USE_MISC && __USE_XOPEN_EXTENDED] (scalb): Do
+	not define macro.
+	* conform/Makefile (test-xfail-XOPEN2K/math.h/conform): Remove
+	variable.
+	(test-xfail-XOPEN2K/tgmath.h/conform): Likewise.
+	(test-xfail-XOPEN2K8/math.h/conform): Likewise.
+	(test-xfail-XOPEN2K8/tgmath.h/conform): Likewise.
+
 	[BZ #18857]
 	* sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c (__nearbyintl): Just
 	return non-finite argument without doing ordered comparisons on
diff --git a/NEWS b/NEWS
index 5db57a2e9a..702b118e85 100644
--- a/NEWS
+++ b/NEWS
@@ -14,7 +14,7 @@ Version 2.23
   18240, 18265, 18370, 18421, 18480, 18525, 18595, 18610, 18618, 18647,
   18661, 18674, 18675, 18681, 18757, 18778, 18781, 18787, 18789, 18790,
   18795, 18796, 18820, 18823, 18824, 18857, 18863, 18870, 18873, 18875,
-  18887, 18921, 18952, 18961, 18966.
+  18887, 18921, 18952, 18961, 18966, 18967.
 
 * The obsolete header <regexp.h> has been removed.  Programs that require
   this header must be updated to use <regex.h> instead.
diff --git a/conform/Makefile b/conform/Makefile
index 7d0a3dd92e..1a763691c7 100644
--- a/conform/Makefile
+++ b/conform/Makefile
@@ -217,7 +217,6 @@ test-xfail-UNIX98/utmpx.h/conform = yes
 test-xfail-XOPEN2K/aio.h/conform = yes
 test-xfail-XOPEN2K/fcntl.h/conform = yes
 test-xfail-XOPEN2K/langinfo.h/conform = yes
-test-xfail-XOPEN2K/math.h/conform = yes
 test-xfail-XOPEN2K/mqueue.h/conform = yes
 test-xfail-XOPEN2K/semaphore.h/conform = yes
 test-xfail-XOPEN2K/signal.h/conform = yes
@@ -225,7 +224,6 @@ test-xfail-XOPEN2K/stdarg.h/conform = yes
 test-xfail-XOPEN2K/stdio.h/conform = yes
 test-xfail-XOPEN2K/sys/wait.h/conform = yes
 test-xfail-XOPEN2K/termios.h/conform = yes
-test-xfail-XOPEN2K/tgmath.h/conform = yes
 test-xfail-XOPEN2K/ucontext.h/conform = yes
 test-xfail-POSIX2008/arpa/inet.h/conform = yes
 test-xfail-POSIX2008/netdb.h/conform = yes
@@ -234,12 +232,10 @@ test-xfail-POSIX2008/signal.h/conform = yes
 test-xfail-POSIX2008/sys/socket.h/conform = yes
 test-xfail-POSIX2008/sys/wait.h/conform = yes
 test-xfail-XOPEN2K8/limits.h/conform = yes
-test-xfail-XOPEN2K8/math.h/conform = yes
 test-xfail-XOPEN2K8/signal.h/conform = yes
 test-xfail-XOPEN2K8/stdio.h/conform = yes
 test-xfail-XOPEN2K8/sys/wait.h/conform = yes
 test-xfail-XOPEN2K8/termios.h/conform = yes
-test-xfail-XOPEN2K8/tgmath.h/conform = yes
 
 conformtest-cc-flags = -I../include $(+sysdep-includes) $(sysincludes) -I..
 $(conformtest-header-tests): $(objpfx)%/conform.out: \
diff --git a/math/bits/mathcalls.h b/math/bits/mathcalls.h
index a881b7d69c..7ffe0407e9 100644
--- a/math/bits/mathcalls.h
+++ b/math/bits/mathcalls.h
@@ -229,10 +229,12 @@ __END_NAMESPACE_C99
 /* Return nonzero if VALUE is not a number.  */
 __MATHDECL_1 (int,__isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
 
-#if defined __USE_MISC || defined __USE_XOPEN
+#if defined __USE_MISC || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
 /* Return nonzero if VALUE is not a number.  */
 __MATHDECL_1 (int,isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
+#endif
 
+#if defined __USE_MISC || defined __USE_XOPEN
 /* Bessel functions.  */
 __MATHCALL (j0,, (_Mdouble_));
 __MATHCALL (j1,, (_Mdouble_));
@@ -259,7 +261,7 @@ __MATHCALL (tgamma,, (_Mdouble_));
 __END_NAMESPACE_C99
 #endif
 
-#if defined __USE_MISC || defined __USE_XOPEN
+#if defined __USE_MISC || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
 /* Obsolete alias for `lgamma'.  */
 __MATHCALL (gamma,, (_Mdouble_));
 #endif
@@ -366,7 +368,9 @@ __MATHDECL_1 (int, __issignaling,, (_Mdouble_ __value))
      __attribute__ ((__const__));
 #endif
 
-#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+#if defined __USE_MISC || (defined __USE_XOPEN_EXTENDED \
+			   && __MATH_DECLARING_DOUBLE	\
+			   && !defined __USE_XOPEN2K8)
 /* Return X times (2 to the Nth power).  */
 __MATHCALL (scalb,, (_Mdouble_ __x, _Mdouble_ __n));
 #endif
diff --git a/math/math.h b/math/math.h
index c5115d7982..63511a68ec 100644
--- a/math/math.h
+++ b/math/math.h
@@ -77,6 +77,7 @@ __BEGIN_DECLS
 
 #define _Mdouble_		double
 #define __MATH_PRECNAME(name,r)	__CONCAT(name,r)
+#define __MATH_DECLARING_DOUBLE  1
 #define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_STD
 #define _Mdouble_END_NAMESPACE   __END_NAMESPACE_STD
 #include <bits/mathcalls.h>
@@ -84,6 +85,7 @@ __BEGIN_DECLS
 #undef _Mdouble_BEGIN_NAMESPACE
 #undef _Mdouble_END_NAMESPACE
 #undef	__MATH_PRECNAME
+#undef __MATH_DECLARING_DOUBLE
 
 #ifdef __USE_ISOC99
 
@@ -96,6 +98,7 @@ __BEGIN_DECLS
 # endif
 # define _Mdouble_		_Mfloat_
 # define __MATH_PRECNAME(name,r) name##f##r
+# define __MATH_DECLARING_DOUBLE  0
 # define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99
 # define _Mdouble_END_NAMESPACE   __END_NAMESPACE_C99
 # include <bits/mathcalls.h>
@@ -103,6 +106,7 @@ __BEGIN_DECLS
 # undef _Mdouble_BEGIN_NAMESPACE
 # undef _Mdouble_END_NAMESPACE
 # undef	__MATH_PRECNAME
+# undef __MATH_DECLARING_DOUBLE
 
 # if !(defined __NO_LONG_DOUBLE_MATH && defined _LIBC) \
      || defined __LDBL_COMPAT \
@@ -140,6 +144,7 @@ extern long double __REDIRECT_NTH (nexttowardl,
 #  endif
 #  define _Mdouble_		_Mlong_double_
 #  define __MATH_PRECNAME(name,r) name##l##r
+#  define __MATH_DECLARING_DOUBLE  0
 #  define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99
 #  define _Mdouble_END_NAMESPACE   __END_NAMESPACE_C99
 #  define __MATH_DECLARE_LDOUBLE   1
@@ -148,6 +153,7 @@ extern long double __REDIRECT_NTH (nexttowardl,
 #  undef _Mdouble_BEGIN_NAMESPACE
 #  undef _Mdouble_END_NAMESPACE
 #  undef __MATH_PRECNAME
+#  undef __MATH_DECLARING_DOUBLE
 
 # endif /* !(__NO_LONG_DOUBLE_MATH && _LIBC) || __LDBL_COMPAT */
 
diff --git a/math/tgmath.h b/math/tgmath.h
index 3e1fb0207a..610a42114a 100644
--- a/math/tgmath.h
+++ b/math/tgmath.h
@@ -401,7 +401,7 @@
 #define remainder(Val1, Val2) __TGMATH_BINARY_REAL_ONLY (Val1, Val2, remainder)
 
 /* Return X times (2 to the Nth power).  */
-#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+#ifdef __USE_MISC
 # define scalb(Val1, Val2) __TGMATH_BINARY_REAL_ONLY (Val1, Val2, scalb)
 #endif
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