I wrote:
> 2020-03-08 Bruno Haible <br...@clisp.org>
>
> *printf-posix: Document why it's overridden on some glibc systems.
> Reported by Adrian Bunk <b...@stusta.de> in
> <https://lists.gnu.org/archive/html/bug-gnulib/2020-03/msg00011.html>.
> * doc/posix-functions/*printf.texi: Document the problem with the %n
> directive on some glibc systems.
> * m4/printf.m4 (gl_PRINTF_DIRECTIVE_N, gl_SNPRINTF_DIRECTIVE_N): Adjust
> the cross-compilation guesses accordingly.
Oops, this patch had a mistake: It produced an error
executing aclocal -I glm4
/usr/bin/m4:configure.ac:4472: recursion limit of 1024 exceeded, use -L<N> to
change it
autom4te: /usr/bin/m4 failed with exit status: 1
aclocal: error: echo failed with exit status: 1
Caught by the continuous integration - thanks Tim for setting it up!
2020-03-16 Bruno Haible <br...@clisp.org>
*printf-posix: Fix m4 error (regression from 2020-03-08).
* m4/printf.m4 (gl_SNPRINTF_DIRECTIVE_N): Enable interpretation of
brackets in AC_COMPILE_IFELSE invocation.
diff --git a/m4/printf.m4 b/m4/printf.m4
index 54a2d71..df473d8 100644
--- a/m4/printf.m4
+++ b/m4/printf.m4
@@ -1,4 +1,4 @@
-# printf.m4 serial 63
+# printf.m4 serial 64
dnl Copyright (C) 2003, 2007-2020 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -1422,7 +1422,6 @@ int main ()
[gl_cv_func_snprintf_directive_n=yes],
[gl_cv_func_snprintf_directive_n=no],
[
-changequote(,)dnl
case "$host_os" in
# Guess no on glibc when _FORTIFY_SOURCE >= 2.
*-gnu* | gnu*) AC_COMPILE_IFELSE(
@@ -1434,6 +1433,7 @@ changequote(,)dnl
[gl_cv_func_snprintf_directive_n="guessing
yes"],
[gl_cv_func_snprintf_directive_n="guessing
no"])
;;
+changequote(,)dnl
# Guess yes on musl systems.
*-musl*) gl_cv_func_snprintf_directive_n="guessing
yes";;
# Guess yes on FreeBSD >= 5.
@@ -1466,8 +1466,8 @@ changequote(,)dnl
mingw*) gl_cv_func_snprintf_directive_n="guessing
no";;
# If we don't know, obey
--enable-cross-guesses.
*)
gl_cv_func_snprintf_directive_n="$gl_cross_guess_normal";;
- esac
changequote([,])dnl
+ esac
])
])
])
