diff --git a/libio/Makefile b/libio/Makefile
index 4f4dd9f275..08e1e0ec25 100644
--- a/libio/Makefile
+++ b/libio/Makefile
@@ -136,6 +136,7 @@ tests = \
   tst-ungetwc1 \
   tst-ungetwc2 \
   tst-wfile-sync \
+  tst-wfiledoallocate-static \
   tst-widetext \
   tst-wmemstream1 \
   tst-wmemstream2 \
@@ -151,7 +152,10 @@ tests = \
   tst_wscanf \
   # tests
 
-tests-static += tst-stdio-static
+tests-static += \
+   tst-stdio-static \
+   tst-wfiledoallocate-static \
+# tests-static
 
 $(objpfx)tst-popen-fork: $(shared-thread-library)
 
diff --git a/libio/tst-wfiledoallocate-static.c b/libio/tst-wfiledoallocate-static.c
new file mode 100644
index 0000000000..efbbd0fbc8
--- /dev/null
+++ b/libio/tst-wfiledoallocate-static.c
@@ -0,0 +1,30 @@
+/* Test static link with function _IO_wfile_doallocate.
+   Copyright (C) 2026 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 <stdio.h>
+#include <wchar.h>
+
+/* NB: Call main directly to trigger BZ #33935.  */
+
+int
+main (void)
+{
+  const wchar_t *string = L"Test String.";
+  (void) wprintf (L"%ls\n", string);
+  return 0;
+}
diff --git a/libio/wgenops.c b/libio/wgenops.c
index 7a8466ea44..064d71266d 100644
--- a/libio/wgenops.c
+++ b/libio/wgenops.c
@@ -34,6 +34,8 @@
 
 static int save_for_wbackup (FILE *fp, wchar_t *end_p) __THROW;
 
+libio_static_fn_required (_IO_wfile_doallocate);
+
 /* Return minimum _pos markers
    Assumes the current get area is the main get area. */
 ssize_t