From 415ac3df9b10ae426d4f71f9d48003f6a3c7bd8d Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 9 Jul 2009 23:52:22 -0700 Subject: 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. --- elf/tst-unique1.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 elf/tst-unique1.c (limited to 'elf/tst-unique1.c') diff --git a/elf/tst-unique1.c b/elf/tst-unique1.c new file mode 100644 index 0000000..9b7996c --- /dev/null +++ b/elf/tst-unique1.c @@ -0,0 +1,40 @@ +#include +#include +#include + +static int +do_test (void) +{ +#ifdef HAVE_ASM_UNIQUE_OBJECT + void *h1 = dlopen ("tst-unique1mod1.so", RTLD_LAZY); + if (h1 == NULL) + { + puts ("cannot load tst-unique1mod1"); + return 1; + } + int *(*f1) (void) = dlsym (h1, "f"); + if (f1 == NULL) + { + puts ("cannot locate f in tst-unique1mod1"); + return 1; + } + void *h2 = dlopen ("tst-unique1mod2.so", RTLD_LAZY); + if (h2 == NULL) + { + puts ("cannot load tst-unique1mod2"); + return 1; + } + int (*f2) (int *) = dlsym (h2, "f"); + if (f2 == NULL) + { + puts ("cannot locate f in tst-unique1mod2"); + return 1; + } + return f2 (f1 ()); +#else + return 0; +#endif +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" -- cgit v1.1