[PATCH] powerpc: Fix inline feraiseexcept, feclearexcept macros

[Adhemerval Zanella]

This patch fixes the inline feraiseexcept and feclearexcept macros for
powerpc by casting the input argument to integer before operation on it.

It fixes BZ#17776.

Tested on powerpc64 and powerp32, no regression found. 

--

	[BZ #17776]
	* sysdeps/powerpc/bits/fenvinline.h (feraiseexcept): Convert input to
	integer before bitwise and assembly operations.
	(feclearexcept): Likewise.

--

diff --git a/NEWS b/NEWS
index ed15176..b62088c 100644
--- a/NEWS
+++ b/NEWS
@@ -17,8 +17,8 @@ Version 2.21
   17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647, 17653, 17657,
   17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719, 17722, 17723,
   17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747, 17748, 17775,
-  17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797, 17803, 17806,
-  17834, 17844.
+  17776, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797, 17803,
+  17806, 17834, 17844.
 
 * A new semaphore algorithm has been implemented in generic C code for all
   machines. Previous custom assembly implementations of semaphore were
diff --git a/sysdeps/powerpc/bits/fenvinline.h b/sysdeps/powerpc/bits/fenvinline.h
index 35c2114..999c6b2 100644
--- a/sysdeps/powerpc/bits/fenvinline.h
+++ b/sysdeps/powerpc/bits/fenvinline.h
@@ -34,29 +34,41 @@
 
 /* Inline definition for feraiseexcept.  */
 #  define feraiseexcept(__excepts) \
-  ((__builtin_constant_p (__excepts)					      \
-    && ((__excepts) & ((__excepts)-1)) == 0				      \
-    && (__excepts) != FE_INVALID)					      \
-   ? ((__excepts) != 0							      \
-      ? (__extension__ ({ __asm__ __volatile__				      \
-			  ("mtfsb1 %s0"					      \
-			   : : "i#*X"(__builtin_ffs (__excepts)));	      \
-			  0; }))					      \
-      : 0)								      \
-   : (feraiseexcept) (__excepts))
+  (__extension__  ({ 							      \
+    int __e = __excepts;						      \
+    int __ret;								      \
+    if (__builtin_constant_p (__e)					      \
+        && ((__e & (__e-1)) == 0)					      \
+        && (__e != FE_INVALID))						      \
+      {									      \
+	if (__e != 0)							      \
+	  __asm__ __volatile__ ("mtfsb1 %s0"				      \
+				: : "i#*X" (__builtin_ffs (__e)));	      \
+        __ret = 0;							      \
+      }									      \
+    else								      \
+      __ret = feraiseexcept (__e);					      \
+    __ret;								      \
+  }))
 
 /* Inline definition for feclearexcept.  */
 #  define feclearexcept(__excepts) \
-  ((__builtin_constant_p (__excepts)					      \
-    && ((__excepts) & ((__excepts)-1)) == 0				      \
-    && (__excepts) != FE_INVALID)					      \
-   ? ((__excepts) != 0							      \
-      ? (__extension__ ({ __asm__ __volatile__				      \
-			  ("mtfsb0 %s0"					      \
-			   : : "i#*X"(__builtin_ffs (__excepts)));	      \
-			  0; }))					      \
-      : 0)								      \
-   : (feclearexcept) (__excepts))
+  (__extension__  ({ 							      \
+    int __e = __excepts;						      \
+    int __ret;								      \
+    if (__builtin_constant_p (__e)					      \
+        && ((__e & (__e-1)) == 0)					      \
+        && (__e != FE_INVALID))						      \
+      {									      \
+	if (__e != 0)							      \
+	  __asm__ __volatile__ ("mtfsb0 %s0"				      \
+				: : "i#*X" (__builtin_ffs (__e)));	      \
+        __ret = 0;							      \
+      }									      \
+    else								      \
+      __ret = feclearexcept (__e);					      \
+    __ret;								      \
+  }))
 
 # endif /* !__NO_MATH_INLINES.  */