pipe: Set errno upon failure.

[gnulib.git] / m4 / vasnprintf.m4

diff --git a/m4/vasnprintf.m4 b/m4/vasnprintf.m4
index 01e8772..50a20cc 100644 (file)
--- a/m4/vasnprintf.m4
+++ b/m4/vasnprintf.m4
@@ -1,5 +1,5 @@
-# vasnprintf.m4 serial 28
-dnl Copyright (C) 2002-2004, 2006-2009 Free Software Foundation, Inc.
+# vasnprintf.m4 serial 29
+dnl Copyright (C) 2002-2004, 2006-2010 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.
@@ -52,7 +52,7 @@ AC_DEFUN([gl_PREREQ_PRINTF_PARSE],
 ])
 
 # Prerequisites of lib/vasnprintf.c.
-AC_DEFUN([gl_PREREQ_VASNPRINTF],
+AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
 [
   AC_REQUIRE([AC_FUNC_ALLOCA])
   AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
@@ -66,7 +66,7 @@ AC_DEFUN([gl_PREREQ_VASNPRINTF],
 
 # Extra prerequisites of lib/vasnprintf.c for supporting 'long double'
 # arguments.
-AC_DEFUN([gl_PREREQ_VASNPRINTF_LONG_DOUBLE],
+AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF_LONG_DOUBLE],
 [
   AC_REQUIRE([gl_PRINTF_LONG_DOUBLE])
   case "$gl_cv_func_printf_long_double" in