[PATCH v2 3/3] stdio: Add stpeprintf()

[Alejandro Colomar <alx.manpages@gmail.com>]

Add variadic-argument version of vstpeprintf(3).

Signed-off-by: Alejandro Colomar <alx@kernel.org>
---
 libio/stdio.h             |  4 ++++
 stdio-common/Makefile     |  1 +
 stdio-common/stpeprintf.c | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 37 insertions(+)
 create mode 100644 stdio-common/stpeprintf.c

diff --git a/libio/stdio.h b/libio/stdio.h
index 59b8047ecc..7456ea6885 100644
--- a/libio/stdio.h
+++ b/libio/stdio.h
@@ -385,6 +385,10 @@ extern int vsnprintf (char *__restrict __s, size_t __maxlen,
 #endif
 
 #if __USE_GNU
+extern char *stpeprintf (char *__dest, char *__end,
+			 const char *__restrict __fmt, ...)
+     __THROWNL __attribute__ ((__format__ (__printf__, 3, 4)));
+
 extern char *vstpeprintf (char *__dest, char *__end,
 			  const char *__restrict __fmt, __gnuc_va_list __arg)
      __THROWNL __attribute__ ((__format__ (__printf__, 3, 0)));
diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index 3e0c574ca5..d92942a86f 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -79,6 +79,7 @@ routines := \
   snprintf \
   sprintf \
   sscanf \
+  stpeprintf \
   tempnam \
   tempname \
   tmpfile \
diff --git a/stdio-common/stpeprintf.c b/stdio-common/stpeprintf.c
new file mode 100644
index 0000000000..7b953be3ee
--- /dev/null
+++ b/stdio-common/stpeprintf.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 2022 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <stdio.h>
+
+char *
+stpeprintf(char *dst, char *end, const char *restrict fmt, ...)
+{
+	char     *p;
+	va_list  ap;
+
+	va_start(ap, fmt);
+	p = vstpeprintf(dst, end, fmt, ap);
+	va_end(ap);
+
+	return p;
+}
-- 
2.39.0