From 823143c6ca8ef4267e67ba03771991e08d09fabd Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Wed, 31 Jan 2018 05:10:40 -0800
Subject: Check if __start/__stop symbols are referenced by shared objects

Define  __start/__stop symbols if they are referenced by shared objects,
not if they are also defined in shared objects.

bfd/

	PR ld/21964
	* elflink.c (bfd_elf_define_start_stop): Check if __start and
	__stop symbols are referenced by shared objects.

ld/

	PR ld/21964
	* testsuite/ld-elf/pr21964-4.c: New file.
	* testsuite/ld-elf/shared.exp: Run pr21964-4 test on Linux.
---
 ld/ChangeLog                    |  6 ++++++
 ld/testsuite/ld-elf/pr21964-4.c | 22 ++++++++++++++++++++++
 ld/testsuite/ld-elf/shared.exp  | 12 ++++++++++++
 3 files changed, 40 insertions(+)
 create mode 100644 ld/testsuite/ld-elf/pr21964-4.c

(limited to 'ld')

diff --git a/ld/ChangeLog b/ld/ChangeLog
index f29d51a..67e29b9 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,9 @@
+2018-01-31  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR ld/21964
+	* testsuite/ld-elf/pr21964-4.c: New file.
+	* testsuite/ld-elf/shared.exp: Run pr21964-4 test on Linux.
+
 2018-01-30  Alan Modra  <amodra@gmail.com>
 
 	* testsuite/ld-gc/stop.d,
diff --git a/ld/testsuite/ld-elf/pr21964-4.c b/ld/testsuite/ld-elf/pr21964-4.c
new file mode 100644
index 0000000..d50c148
--- /dev/null
+++ b/ld/testsuite/ld-elf/pr21964-4.c
@@ -0,0 +1,22 @@
+#define _GNU_SOURCE
+#include <dlfcn.h>
+#include <stdio.h>
+
+extern int __start___verbose[];
+int bar (void)
+{
+  static int my_var __attribute__ ((section("__verbose"), used)) = 6;
+  int *ptr;
+  ptr = (int*) dlsym (RTLD_DEFAULT, "__start___verbose");
+  if (ptr != NULL || __start___verbose[0] != 6)
+    return -1;
+  return 0;
+}
+
+int
+main ()
+{
+  if (bar () == 0)
+    printf ("PASS\n");
+  return 0;
+}
diff --git a/ld/testsuite/ld-elf/shared.exp b/ld/testsuite/ld-elf/shared.exp
index 8223d3d..833a428 100644
--- a/ld/testsuite/ld-elf/shared.exp
+++ b/ld/testsuite/ld-elf/shared.exp
@@ -1099,6 +1099,18 @@ if { [istarget *-*-linux*]
 	    "pr22393-2-static" \
 	    "pass.out" \
 	] \
+	[list \
+	    "Run pr21964-4" \
+	    "" \
+	    "" \
+	    {pr21964-4.c} \
+	    "pr21964-4" \
+	    "pass.out" \
+	    "" \
+	    "" \
+	    "" \
+	    "-ldl" \
+	] \
     ]
 }
 
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