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author | Ulrich Drepper <drepper@redhat.com> | 2009-07-09 23:52:22 -0700 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2009-07-09 23:52:22 -0700 |
commit | 415ac3df9b10ae426d4f71f9d48003f6a3c7bd8d (patch) | |
tree | ffdd1aed425688539db80ff7b9daf6f6ddbcbfff /elf/tst-unique2.c | |
parent | b4f55afd031f14531ba7681032fc5f75a1578320 (diff) | |
download | glibc-415ac3df9b10ae426d4f71f9d48003f6a3c7bd8d.tar.gz glibc-415ac3df9b10ae426d4f71f9d48003f6a3c7bd8d.tar.xz glibc-415ac3df9b10ae426d4f71f9d48003f6a3c7bd8d.zip |
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.c | 32 |
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" |