From c3fd12a2392d4b475566a483af3b8f230d5d0e10 Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Wed, 21 Aug 2002 23:03:46 +0000
Subject: [PATCH] 2002-08-21  Roland McGrath  <roland@redhat.com>

	* dlfcn/bug-dlsym1.c: New file.
	* dlfcn/bug-dlsym1-lib1.c, dlfcn/bug-dlsym1-lib2.c: New files.
	* dlfcn/Makefile (distribute): Add them.
	(tests): Add bug-dlsym1 here.
	(modules-names): Add bug-dlsym1-lib1 and bug-dlsym1-lib2 here.
	($(objpfx)bug-dlsym1, $(objpfx)bug-dlsym1.out): New targets.
	($(objpfx)bug-dlsym1-lib1.so, $(objpfx)bug-dlsym1-lib2.so): Likewise.
---
 dlfcn/Makefile          | 20 +++++++++++++++++---
 dlfcn/bug-dlsym1-lib1.c |  9 +++++++++
 dlfcn/bug-dlsym1-lib2.c |  3 +++
 dlfcn/bug-dlsym1.c      | 30 ++++++++++++++++++++++++++++++
 4 files changed, 59 insertions(+), 3 deletions(-)
 create mode 100644 dlfcn/bug-dlsym1-lib1.c
 create mode 100644 dlfcn/bug-dlsym1-lib2.c
 create mode 100644 dlfcn/bug-dlsym1.c

diff --git a/dlfcn/Makefile b/dlfcn/Makefile
index 9faee3edf4..33f6e92c3b 100644
--- a/dlfcn/Makefile
+++ b/dlfcn/Makefile
@@ -22,7 +22,8 @@ extra-libs	:= libdl
 libdl-routines	:= dlopen dlclose dlsym dlvsym dlerror dladdr eval
 distribute	:= dlopenold.c glreflib1.c glreflib2.c failtestmod.c eval.c \
 		   defaultmod1.c defaultmod2.c errmsg1mod.c modatexit.c \
-		   modcxaatexit.c modstatic.c
+		   modcxaatexit.c modstatic.c \
+		   bug-dlsym1-lib1.c bug-dlsym1-lib2.c
 
 extra-libs-others := libdl
 
@@ -35,13 +36,15 @@ endif
 libdl-shared-only-routines += eval
 
 ifeq (yes,$(build-shared))
-tests = glrefmain failtest tst-dladdr default errmsg1 tstcxaatexit bug-dlopen1
+tests = glrefmain failtest tst-dladdr default errmsg1 tstcxaatexit \
+	bug-dlopen1 bug-dlsym1
 ifeq (yes,$(have-protected))
 tests += tstatexit
 endif
 endif
 modules-names = glreflib1 glreflib2 failtestmod defaultmod1 defaultmod2 \
-		errmsg1mod modatexit modcxaatexit
+		errmsg1mod modatexit modcxaatexit \
+		bug-dlsym1-lib1 bug-dlsym1-lib2
 
 ifeq (yesyesyes,$(build-static)$(build-shared)$(elf))
 tests += tststatic
@@ -96,6 +99,17 @@ $(objpfx)modstatic.so: $(common-objpfx)libc.so $(common-objpfx)libc_nonshared.a
 
 $(objpfx)bug-dlopen1: $(libdl)
 
+$(objpfx)bug-dlsym1: $(libdl) $(objpfx)bug-dlsym1-lib2.so
+$(objpfx)bug-dlsym1.out: $(objpfx)bug-dlsym1-lib1.so \
+			 $(objpfx)bug-dlsym1-lib2.so
+$(objpfx)bug-dlsym1-lib1.so: $(objpfx)bug-dlsym1-lib2.so \
+			     $(common-objpfx)libc.so \
+			     $(common-objpfx)libc_nonshared.a
+$(objpfx)bug-dlsym1-lib2.so: $(common-objpfx)libc.so \
+			     $(common-objpfx)libc_nonshared.a
+
+
+
 # Depend on libc.so so a DT_NEEDED is generated in the shared objects.
 # This ensures they will load libc.so for needed symbols if loaded by
 # a statically-linked program that hasn't already loaded it.
diff --git a/dlfcn/bug-dlsym1-lib1.c b/dlfcn/bug-dlsym1-lib1.c
new file mode 100644
index 0000000000..5435b1f5ce
--- /dev/null
+++ b/dlfcn/bug-dlsym1-lib1.c
@@ -0,0 +1,9 @@
+/* Test module for bug-dlsym1.c test case.  */
+
+extern int dlopen_test_variable;
+
+/* here to get the unresolved symbol in our .so */
+char foo()
+{
+    return dlopen_test_variable;
+}
diff --git a/dlfcn/bug-dlsym1-lib2.c b/dlfcn/bug-dlsym1-lib2.c
new file mode 100644
index 0000000000..4466cbd2d9
--- /dev/null
+++ b/dlfcn/bug-dlsym1-lib2.c
@@ -0,0 +1,3 @@
+/* Test module for bug-dlsym1.c test case.  */
+
+char dlopen_test_variable;
diff --git a/dlfcn/bug-dlsym1.c b/dlfcn/bug-dlsym1.c
new file mode 100644
index 0000000000..61c6cda560
--- /dev/null
+++ b/dlfcn/bug-dlsym1.c
@@ -0,0 +1,30 @@
+/* Test case for bug in dlsym accessing dependency objects' symbols.  */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <dlfcn.h>
+
+int main(void)
+{
+    void *handle;
+    char *c;
+
+    setenv ("LD_LIBRARY_PATH", "/home/roland/build/tls-libc/dlfcn", 1);
+
+    /* open lib1.so, which has the unresolved test symbol and a DT_NEEDED
+       on lib2.so, which provides the symbol */
+    if ((handle = dlopen("bug-dlsym1-lib1.so", RTLD_NOW)) == NULL) {
+	printf("dlopen(\"bug-dlsym1-lib1.so\"): %s\n", dlerror());
+	abort();
+    }
+
+    if ((c = dlsym(handle, "dlopen_test_variable")) == NULL) {
+	printf("dlsym(handle, \"dlopen_test_variable\"): %s\n", dlerror());
+	abort();
+    }
+
+    (void) dlclose(handle);
+
+    return 0;
+}