Add __extension__ to signbit definitions to calm down gcc.

diff --git a/sysdeps/i386/fpu/bits/mathinline.h b/sysdeps/i386/fpu/bits/mathinline.h
index 463d481..ac840bf 100644 (file)
--- a/sysdeps/i386/fpu/bits/mathinline.h
+++ b/sysdeps/i386/fpu/bits/mathinline.h
@@ -1,5 +1,5 @@
 /* Inline math functions for i387.
-   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by John C. Bowman <bowman@math.ualberta.ca>, 1995.
 
@@ -114,17 +114,19 @@
 __MATH_INLINE int
 __signbitf (float __x)
 {
-  union { float __f; int __i; } __u = { __f: __x }; return __u.__i < 0;
+  __extension__ union { float __f; int __i; } __u = { __f: __x };
+  return __u.__i < 0;
 }
 __MATH_INLINE int
 __signbit (double __x)
 {
-  union { double __d; int __i[2]; } __u = { __d: __x }; return __u.__i[1] < 0;
+  __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
+  return __u.__i[1] < 0;
 }
 __MATH_INLINE int
 __signbitl (long double __x)
 {
-  union { long double __l; int __i[3]; } __u = { __l: __x };
+  __extension__ union { long double __l; int __i[3]; } __u = { __l: __x };
   return (__u.__i[2] & 0x8000) != 0;
 }
 #endif