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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.
33 lines
532 B
C
33 lines
532 B
C
#include <config.h>
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#include <dlfcn.h>
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#include <stdio.h>
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extern int var;
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static int
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do_test (void)
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{
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#ifdef HAVE_ASM_UNIQUE_OBJECT
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var = 1;
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void *h = dlopen ("tst-unique2mod2.so", RTLD_LAZY);
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if (h == NULL)
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{
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puts ("cannot load tst-unique2mod2");
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return 1;
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}
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int (*f) (int *) = dlsym (h, "f");
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if (f == NULL)
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{
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puts ("cannot locate f in tst-unique2mod2");
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return 1;
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}
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return f (&var);
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#else
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return 0;
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#endif
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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