1 files changed, 60 insertions, 0 deletions
diff --git a/elf/tst-recursive-tls.c b/elf/tst-recursive-tls.c
new file mode 100644
index 0000000000..716d1f783a
--- /dev/null
+++ b/elf/tst-recursive-tls.c
@@ -0,0 +1,60 @@
+/* Test with interposed malloc with dynamic TLS.
+   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 <array_length.h>
+#include <stdio.h>
+#include <support/check.h>
+#include <support/xdlfcn.h>
+
+/* Defined in tst-recursive-tlsmallocmod.so.  */
+extern __thread unsigned int malloc_subsytem_counter;
+
+static int
+do_test (void)
+{
+  /* 16 is large enough to exercise the DTV resizing case.  */
+  void *handles[16];
+
+  for (unsigned int i = 0; i < array_length (handles); ++i)
+    {
+      /* Re-use the TLS slot for module 0.  */
+      if (i > 0)
+        xdlclose (handles[0]);
+
+      char soname[30];
+      snprintf (soname, sizeof (soname), "tst-recursive-tlsmod%u.so", i);
+      handles[i] = xdlopen (soname, RTLD_NOW);
+
+      if (i > 0)
+        {
+          handles[0] = xdlopen ("tst-recursive-tlsmod0.so", RTLD_NOW);
+          int (*fptr) (void) = xdlsym (handles[0], "get_threadvar_0");
+          /* May trigger TLS storage allocation using malloc.  */
+          TEST_COMPARE (fptr (), 0);
+        }
+    }
+
+  for (unsigned int i = 0; i < array_length (handles); ++i)
+    xdlclose (handles[i]);
+
+  printf ("info: malloc subsystem calls: %u\n", malloc_subsytem_counter);
+  TEST_VERIFY (malloc_subsytem_counter > 0);
+  return 0;
+}
+
+#include <support/test-driver.c>