Blame sysdeps/x86_64/stackguard-macros.h
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#include <stdint.h>
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#define STACK_CHK_GUARD \
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({ uintptr_t x; \
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asm ("mov %%fs:%c1, %0" : "=r" (x) \
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: "i" (offsetof (tcbhead_t, stack_guard))); x; })
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#define POINTER_CHK_GUARD \
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({ uintptr_t x; \
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asm ("mov %%fs:%c1, %0" : "=r" (x) \
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: "i" (offsetof (tcbhead_t, pointer_guard))); x; })
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