Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 81 insertions, 0 deletions

diff --git a/REORG.TODO/elf/noload.c b/REORG.TODO/elf/noload.c
new file mode 100644
index 0000000000..bcc85efc27
--- /dev/null
+++ b/REORG.TODO/elf/noload.c
@@ -0,0 +1,81 @@
+#include <dlfcn.h>
+#include <stdio.h>
+#include <mcheck.h>
+
+int
+main (void)
+{
+  int result = 0;
+  void *p;
+
+  mtrace ();
+
+  /* First try to load an object which is a dependency.  This should
+     succeed.  */
+  p = dlopen ("testobj1.so", RTLD_LAZY | RTLD_NOLOAD);
+  if (p == NULL)
+    {
+      printf ("cannot open \"testobj1.so\": %s\n", dlerror ());
+      result = 1;
+    }
+  else
+    {
+      puts ("loading \"testobj1.so\" succeeded, OK");
+      dlclose (p);
+    }
+
+  /* Now try loading an object which is not already loaded.  */
+  if (dlopen ("testobj5.so", RTLD_LAZY | RTLD_NOLOAD) != NULL)
+    {
+      puts ("succeeded in loading \"testobj5.so\"");
+      result = 1;
+    }
+  else
+    {
+      /* Load the object and run the same test again.  */
+      puts ("\"testobj5.so\" wasn't loaded and RTLD_NOLOAD prevented it, OK");
+
+      p = dlopen ("testobj5.so", RTLD_LAZY);
+
+      if (p == NULL)
+	{
+	  printf ("cannot open \"testobj5.so\" without RTLD_NOLOAD: %s\n",
+		  dlerror ());
+	  result = 1;
+	}
+      else
+	{
+	  puts ("loading \"testobj5.so\" succeeded, OK");
+
+	  void *q = dlopen ("testobj5.so", RTLD_LAZY | RTLD_NOLOAD);
+	  if (q == NULL)
+	    {
+	      printf ("cannot open \"testobj5.so\": %s\n", dlerror ());
+	      result = 1;
+	    }
+	  else
+	    {
+	      puts ("loading \"testobj5.so\" with RTLD_NOLOAD succeeded, OK");
+	      dlclose (q);
+	    }
+
+	  if (dlclose (p) != 0)
+	    {
+	      printf ("cannot close \"testobj5.so\": %s\n", dlerror ());
+	      result = 1;
+	    }
+	  else
+	    puts ("closing \"testobj5.so\" succeeded, OK");
+	}
+    }
+
+  return result;
+}
+
+
+extern int foo (int a);
+int
+foo (int a)
+{
+  return 42 + a;
+}