[BZ #776]cvs/fedora-glibc-20050303T1335

2005-03-01  H.J. Lu  <hongjiu.lu@intel.com>
	[BZ #776]
	* iconv/iconvconfig.c: Fix comment for the output file.
	(write_output): Clear padding in header.

2005-03-03  Ulrich Drepper  <drepper@redhat.com>

	* elf/dl-close.c (_dl_close): Don't try to set up new searchpath if the
	loader is closed.  Fixes unload3.
	* elf/tst-global1.c: New file.
	* elf/Makefile (tests): Add tst-global1.

2005-03-03  Jakub Jelinek  <jakub@redhat.com>

	* elf/Makefile: Add rules to build and run unload3 test.
	* elf/unload3.c: New test.
	* elf/unload3mod1.c: New file.
	* elf/unload3mod2.c: New file.
	* elf/unload3mod3.c: New file.
	* elf/unload3mod4.c: New file.

7 files changed, 98 insertions, 30 deletions

diff --git a/elf/dl-close.c b/elf/dl-close.c
index eb5e805..7ad486a 100644
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -351,36 +351,6 @@ _dl_close (void *_map)
 	      }
 	  assert (found);
 	}
-      else if (new_opencount[i] != 0 && imap->l_type == lt_loaded
-	       && imap->l_searchlist.r_list == NULL
-	       && imap->l_initfini != NULL)
-	{
-	  /* The object is still used.  But the object we are
-	     unloading right now is responsible for loading it.  If
-	     the current object does not have it's own scope yet we
-	     have to create one.  This has to be done before running
-	     the finalizers.
-
-	     To do this count the number of dependencies.  */
-	  unsigned int cnt;
-	  for (cnt = 1; imap->l_initfini[cnt] != NULL; ++cnt)
-	    if (imap->l_initfini[cnt]->l_idx >= i
-		&& imap->l_initfini[cnt]->l_idx < nopencount)
-	      ++new_opencount[imap->l_initfini[cnt]->l_idx];
-	    else
-	      ++imap->l_initfini[cnt]->l_opencount;
-
-	  /* We simply reuse the l_initfini list.  */
-	  imap->l_searchlist.r_list = &imap->l_initfini[cnt + 1];
-	  imap->l_searchlist.r_nlist = cnt;
-
-	  for (cnt = 0; imap->l_scope[cnt] != NULL; ++cnt)
-	    if (imap->l_scope[cnt] == &map->l_searchlist)
-	      {
-		imap->l_scope[cnt] = &imap->l_searchlist;
-		break;
-	      }
-	}
 
       /* Store the new l_opencount value.  */
       imap->l_opencount = new_opencount[i];
diff --git a/elf/tst-global1.c b/elf/tst-global1.c
new file mode 100644
index 0000000..1611b51
--- /dev/null
+++ b/elf/tst-global1.c
@@ -0,0 +1,36 @@
+#include <dlfcn.h>
+#include <stdio.h>
+
+int
+main (void)
+{
+  void *h1 = dlopen ("$ORIGIN/testobj6.so", RTLD_GLOBAL|RTLD_LAZY);
+  if (h1 == NULL)
+    {
+      puts ("cannot open testobj6");
+      return 1;
+    }
+
+  void *h2 = dlopen ("$ORIGIN/testobj2.so",
+		     RTLD_GLOBAL|RTLD_DEEPBIND|RTLD_LAZY);
+  if (h2 == NULL)
+    {
+      puts ("cannot open testobj2");
+      return 1;
+    }
+
+  dlclose (h1);
+
+  void (*f) (void) = dlsym (h2, "p");
+  if (f == NULL)
+    {
+      puts ("cannot find p");
+      return 1;
+    }
+
+  f ();
+
+  dlclose (h2);
+
+  return 0;
+}
diff --git a/elf/unload3.c b/elf/unload3.c
new file mode 100644
index 0000000..6f1af70
--- /dev/null
+++ b/elf/unload3.c
@@ -0,0 +1,41 @@
+#include <dlfcn.h>
+#include <stdio.h>
+
+int
+main (void)
+{
+  void *g = dlopen ("unload3mod1.so", RTLD_GLOBAL | RTLD_NOW);
+  void *h = dlopen ("unload3mod2.so", RTLD_GLOBAL | RTLD_NOW);
+  if (g == NULL || h == NULL)
+    {
+      printf ("dlopen unload3mod{1,2}.so failed: %p %p\n", g, h);
+      return 1;
+    }
+  dlclose (h);
+  dlclose (g);
+
+  g = dlopen ("unload3mod3.so", RTLD_GLOBAL | RTLD_NOW);
+  h = dlopen ("unload3mod4.so", RTLD_GLOBAL | RTLD_NOW);
+  if (g == NULL || h == NULL)
+    {
+      printf ("dlopen unload3mod{3,4}.so failed: %p %p\n", g, h);
+      return 1;
+    }
+
+  int (*fn) (int);
+  fn = dlsym (h, "bar");
+  if (fn == NULL)
+    {
+      puts ("dlsym failed");
+      return 1;
+    }
+
+  int val = fn (16);
+  if (val != 24)
+    {
+      printf ("bar returned %d != 24\n", val);
+      return 1;
+    }
+
+  return 0;
+}
diff --git a/elf/unload3mod1.c b/elf/unload3mod1.c
new file mode 100644
index 0000000..e886b11
--- /dev/null
+++ b/elf/unload3mod1.c
@@ -0,0 +1 @@
+int dummy1;
diff --git a/elf/unload3mod2.c b/elf/unload3mod2.c
new file mode 100644
index 0000000..03252a5
--- /dev/null
+++ b/elf/unload3mod2.c
@@ -0,0 +1 @@
+int dummy2;
diff --git a/elf/unload3mod3.c b/elf/unload3mod3.c
new file mode 100644
index 0000000..046022c
--- /dev/null
+++ b/elf/unload3mod3.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int
+foo (int x)
+{
+  puts ("foo");
+  return x * 2;
+}
diff --git a/elf/unload3mod4.c b/elf/unload3mod4.c
new file mode 100644
index 0000000..4586ff7
--- /dev/null
+++ b/elf/unload3mod4.c
@@ -0,0 +1,11 @@
+#include <stdio.h>
+
+int
+bar (int x)
+{
+  puts ("bar");
+  fflush (stdout);
+  x = foo (x - 4);
+  puts ("bar after foo");
+  return x;
+}