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authorUlrich Drepper <drepper@redhat.com>2009-07-09 23:52:22 -0700
committerUlrich Drepper <drepper@redhat.com>2009-07-09 23:52:22 -0700
commit415ac3df9b10ae426d4f71f9d48003f6a3c7bd8d (patch)
treeffdd1aed425688539db80ff7b9daf6f6ddbcbfff /elf/tst-unique2.c
parentb4f55afd031f14531ba7681032fc5f75a1578320 (diff)
downloadglibc-415ac3df9b10ae426d4f71f9d48003f6a3c7bd8d.tar.gz
Implement STB_GNU_UNIQUE handling.
Some symbols have to be identified process-wide by their name. This is particularly important for some C++ features (e.g., class local static data and static variables in inline functions). This cannot completely be implemented with ELF functionality so far. The STB_GNU_UNIQUE binding helps by ensuring the dynamic linker will always use the same definition for all symbols with the same name and this binding.
Diffstat (limited to 'elf/tst-unique2.c')
-rw-r--r--elf/tst-unique2.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/elf/tst-unique2.c b/elf/tst-unique2.c
new file mode 100644
index 0000000000..7bb0687364
--- /dev/null
+++ b/elf/tst-unique2.c
@@ -0,0 +1,32 @@
+#include <config.h>
+#include <dlfcn.h>
+#include <stdio.h>
+
+extern int var;
+
+static int
+do_test (void)
+{
+#ifdef HAVE_ASM_UNIQUE_OBJECT
+ var = 1;
+
+ void *h = dlopen ("tst-unique2mod2.so", RTLD_LAZY);
+ if (h == NULL)
+ {
+ puts ("cannot load tst-unique2mod2");
+ return 1;
+ }
+ int (*f) (int *) = dlsym (h, "f");
+ if (f == NULL)
+ {
+ puts ("cannot locate f in tst-unique2mod2");
+ return 1;
+ }
+ return f (&var);
+#else
+ return 0;
+#endif
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"