diff options
Diffstat (limited to 'm4/stdbool.m4')
| -rw-r--r-- | m4/stdbool.m4 | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/m4/stdbool.m4 b/m4/stdbool.m4 index 3f6b4bf..dcb5793 100644 --- a/m4/stdbool.m4 +++ b/m4/stdbool.m4 @@ -1,6 +1,6 @@ # Check for stdbool.h that conforms to C99. -dnl Copyright (C) 2002-2004 Free Software Foundation, Inc. +dnl Copyright (C) 2002-2005 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -28,6 +28,9 @@ AC_DEFUN([AM_STDBOOL_H], AC_SUBST([HAVE__BOOL]) ]) +# AM_STDBOOL_H will be renamed to gl_STDBOOL_H in the future. +AC_DEFUN([gl_STDBOOL_H], [AM_STDBOOL_H]) + # This macro is only needed in autoconf <= 2.59. Newer versions of autoconf # have this macro built-in. @@ -70,10 +73,12 @@ AC_DEFUN([AC_HEADER_STDBOOL], enum { j = false, k = true, l = false * true, m = true * 256 }; _Bool n[m]; char o[sizeof n == m * sizeof n[0] ? 1 : -1]; + char p[-1 - (_Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1]; ], [ - return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !j + !k + !l - + !m + !n + !o); + /* Refer to every declared value, to avoid compiler optimizations. */ + return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !!j + !k + !!l + + !m + !n + !o + !p); ], [ac_cv_header_stdbool_h=yes], [ac_cv_header_stdbool_h=no])]) |