1 files changed, 45 insertions, 0 deletions
diff --git a/elf/tst-link-map-contiguous-main.c b/elf/tst-link-map-contiguous-main.c
new file mode 100644
index 0000000..2d1a054
--- /dev/null
+++ b/elf/tst-link-map-contiguous-main.c
@@ -0,0 +1,45 @@
+/* Check that the entire main program image is readable if contiguous.
+   Copyright (C) 2025 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 <link.h>
+#include <support/check.h>
+#include <support/xdlfcn.h>
+
+static int
+do_test (void)
+{
+  struct link_map *l = xdlopen ("", RTLD_NOW);
+  if (!l->l_contiguous)
+    FAIL_UNSUPPORTED ("main link map is not contiguous");
+
+  /* This check only works if the kernel loaded the main program.  The
+     dynamic loader replaces gaps with PROT_NONE mappings, resulting
+     in faults.  */
+  volatile long int *p = (volatile long int *) l->l_map_start;
+  volatile long int *end = (volatile long int *) l->l_map_end;
+  while (p < end)
+    {
+      *p;
+      ++p;
+    }
+
+  xdlclose (l);
+
+  return 0;
+}
+#include <support/test-driver.c>