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Diffstat (limited to 'gnulib-m4/vasnprintf.m4')
-rw-r--r--gnulib-m4/vasnprintf.m417
1 files changed, 12 insertions, 5 deletions
diff --git a/gnulib-m4/vasnprintf.m4 b/gnulib-m4/vasnprintf.m4
index b3fda27..afdece7 100644
--- a/gnulib-m4/vasnprintf.m4
+++ b/gnulib-m4/vasnprintf.m4
@@ -1,5 +1,5 @@
-# vasnprintf.m4 serial 36
-dnl Copyright (C) 2002-2004, 2006-2018 Free Software Foundation, Inc.
+# vasnprintf.m4 serial 38
+dnl Copyright (C) 2002-2004, 2006-2022 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.
@@ -32,7 +32,6 @@ AC_DEFUN([gl_REPLACE_VASNPRINTF],
# Prerequisites of lib/printf-args.h, lib/printf-args.c.
AC_DEFUN([gl_PREREQ_PRINTF_ARGS],
[
- AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
AC_REQUIRE([gt_TYPE_WCHAR_T])
AC_REQUIRE([gt_TYPE_WINT_T])
])
@@ -41,7 +40,6 @@ AC_DEFUN([gl_PREREQ_PRINTF_ARGS],
AC_DEFUN([gl_PREREQ_PRINTF_PARSE],
[
AC_REQUIRE([gl_FEATURES_H])
- AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
AC_REQUIRE([gt_TYPE_WCHAR_T])
AC_REQUIRE([gt_TYPE_WINT_T])
AC_REQUIRE([AC_TYPE_SIZE_T])
@@ -56,7 +54,6 @@ AC_DEFUN([gl_PREREQ_PRINTF_PARSE],
AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
[
AC_REQUIRE([AC_FUNC_ALLOCA])
- AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
AC_REQUIRE([gt_TYPE_WCHAR_T])
AC_REQUIRE([gt_TYPE_WINT_T])
AC_CHECK_FUNCS([snprintf strnlen wcslen wcsnlen mbrtowc wcrtomb])
@@ -77,6 +74,16 @@ AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
if the buffer had been large enough.])
;;
esac
+ dnl Additionally, the use of %n can be eliminated by assuming that snprintf
+ dnl always produces NUL-terminated strings (no truncation).
+ AC_REQUIRE([gl_SNPRINTF_TRUNCATION_C99])
+ case "$gl_cv_func_snprintf_truncation_c99" in
+ *yes)
+ AC_DEFINE([HAVE_SNPRINTF_TRUNCATION_C99], [1],
+ [Define if the string produced by the snprintf function is always NUL
+ terminated.])
+ ;;
+ esac
])
# Extra prerequisites of lib/vasnprintf.c for supporting 'long double'