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| author | Ulrich Drepper <drepper@redhat.com> | 2009-07-09 23:52:22 -0700 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2009-07-09 23:52:22 -0700 |
| commit | 415ac3df9b10ae426d4f71f9d48003f6a3c7bd8d (patch) | |
| tree | ffdd1aed425688539db80ff7b9daf6f6ddbcbfff /elf/tst-unique1mod2.c | |
| parent | b4f55afd031f14531ba7681032fc5f75a1578320 (diff) | |
| download | glibc-415ac3df9b10ae426d4f71f9d48003f6a3c7bd8d.zip glibc-415ac3df9b10ae426d4f71f9d48003f6a3c7bd8d.tar.gz glibc-415ac3df9b10ae426d4f71f9d48003f6a3c7bd8d.tar.bz2 | |
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-unique1mod2.c')
| -rw-r--r-- | elf/tst-unique1mod2.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/elf/tst-unique1mod2.c b/elf/tst-unique1mod2.c new file mode 100644 index 0000000..c075515 --- /dev/null +++ b/elf/tst-unique1mod2.c @@ -0,0 +1,20 @@ +#include <config.h> + +#ifdef HAVE_ASM_UNIQUE_OBJECT +# define S(s) _S (s) +# define _S(s) #s + +asm (".data;" + S (ASM_GLOBAL_DIRECTIVE) " var\n" + ".type var, " S (ASM_TYPE_DIRECTIVE_PREFIX) "gnu_unique_object\n" + ".size var, 4\n" + "var:.zero 4\n" + ".previous"); +extern int var; + +int +f (int *p) +{ + return &var != p || *p != 1; +} +#endif |