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Kernel and Embedded Linux
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#include <stdio.h> #include <bfd_stdint.h> extern uintptr_t bar; uintptr_t * __attribute__ ((noinline, noclone)) get_bar (void) { return &bar; } int main () { if ((uintptr_t) get_bar () == 0xfffffff0U) printf ("PASS\n"); return 0; } #include <stdio.h>