diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index c2c1143ee7..3c51323168 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -23,7 +23,7 @@ subdir	:= stdio-common
 include ../Makeconfig
 
 # List of markers for printf family function tests.
-xprintf-funcs := p as d f s sn v
+xprintf-funcs := p as d f s sn v vas
 
 # List of data types and formats for individual per-conversion printf tests.
 fmt-convs := double ldouble
diff --git a/stdio-common/tst-printf-format-vas-c.c b/stdio-common/tst-printf-format-vas-c.c
new file mode 100644
index 0000000000..f8cf814c8c
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-c.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for the 'c' conversion.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-c.c"
diff --git a/stdio-common/tst-printf-format-vas-char.c b/stdio-common/tst-printf-format-vas-char.c
new file mode 100644
index 0000000000..39c6e73977
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-char.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for signed char conversions.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-char.c"
diff --git a/stdio-common/tst-printf-format-vas-double.c b/stdio-common/tst-printf-format-vas-double.c
new file mode 100644
index 0000000000..25a21bb0ad
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-double.c
@@ -0,0 +1,22 @@
+/* Test for formatted 'vasprintf' output for double conversions.
+   Copyright (C) 2024 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/>.  */
+
+#define TIMEOUT (DEFAULT_TIMEOUT * 32)
+
+#include "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-double.c"
diff --git a/stdio-common/tst-printf-format-vas-int.c b/stdio-common/tst-printf-format-vas-int.c
new file mode 100644
index 0000000000..9cd70c8fcb
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-int.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-int.c"
diff --git a/stdio-common/tst-printf-format-vas-ldouble.c b/stdio-common/tst-printf-format-vas-ldouble.c
new file mode 100644
index 0000000000..60c3933fab
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-ldouble.c
@@ -0,0 +1,22 @@
+/* Test for formatted 'vasprintf' output for long double conversions.
+   Copyright (C) 2024 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/>.  */
+
+#define TIMEOUT (DEFAULT_TIMEOUT * 128)
+
+#include "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-ldouble.c"
diff --git a/stdio-common/tst-printf-format-vas-llong.c b/stdio-common/tst-printf-format-vas-llong.c
new file mode 100644
index 0000000000..5d5322b8b9
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-llong.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for long long int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-llong.c"
diff --git a/stdio-common/tst-printf-format-vas-long.c b/stdio-common/tst-printf-format-vas-long.c
new file mode 100644
index 0000000000..d9651053f8
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-long.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for long int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-long.c"
diff --git a/stdio-common/tst-printf-format-vas-s.c b/stdio-common/tst-printf-format-vas-s.c
new file mode 100644
index 0000000000..6d74ab83e3
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-s.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for the 's' conversion.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-s.c"
diff --git a/stdio-common/tst-printf-format-vas-short.c b/stdio-common/tst-printf-format-vas-short.c
new file mode 100644
index 0000000000..a6d76a9705
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-short.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for short int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-short.c"
diff --git a/stdio-common/tst-printf-format-vas-uchar.c b/stdio-common/tst-printf-format-vas-uchar.c
new file mode 100644
index 0000000000..c3dee11b7d
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-uchar.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for unsigned char conversions.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-uchar.c"
diff --git a/stdio-common/tst-printf-format-vas-uint.c b/stdio-common/tst-printf-format-vas-uint.c
new file mode 100644
index 0000000000..e56e89374d
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-uint.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for unsigned int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-uint.c"
diff --git a/stdio-common/tst-printf-format-vas-ullong.c b/stdio-common/tst-printf-format-vas-ullong.c
new file mode 100644
index 0000000000..05691bc318
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-ullong.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for unsigned long long int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-ullong.c"
diff --git a/stdio-common/tst-printf-format-vas-ulong.c b/stdio-common/tst-printf-format-vas-ulong.c
new file mode 100644
index 0000000000..767d9cb6a6
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-ulong.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for unsigned long int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-ulong.c"
diff --git a/stdio-common/tst-printf-format-vas-ushort.c b/stdio-common/tst-printf-format-vas-ushort.c
new file mode 100644
index 0000000000..284d79f753
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas-ushort.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'vasprintf' output for unsigned short int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-vas.h"
+#include "tst-printf-format-skeleton-ushort.c"
diff --git a/stdio-common/tst-printf-format-vas.h b/stdio-common/tst-printf-format-vas.h
new file mode 100644
index 0000000000..3e38e729ec
--- /dev/null
+++ b/stdio-common/tst-printf-format-vas.h
@@ -0,0 +1,50 @@
+/* Test feature wrapper for formatted 'vasprintf' output.
+   Copyright (C) 2024 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>
+#include <stdlib.h>
+
+static int
+printf_under_test (const char *restrict fmt, ...)
+{
+  va_list ap;
+  int result;
+  char *str;
+
+  va_start (ap, fmt);
+  result = vasprintf (&str, fmt, ap);
+  va_end (ap);
+  if (result < 0)
+    {
+      perror ("vasprintf");
+      goto out;
+    }
+  if (fwrite (str, sizeof (*str), result, stdout) != result)
+    {
+      perror ("fwrite");
+      result = -1;
+    }
+  free (str);
+out:
+  return result;
+}
+
+#ifndef TIMEOUT
+# define TIMEOUT (DEFAULT_TIMEOUT * 12)
+#endif