Revert "Make stack bounds detection work with ASAN"

This reverts commit 6185cfdf38e26026c6d38220eeca48689e54cdcf.

1 files changed, 0 insertions, 26 deletions

diff --git a/internal/sanitizers.h b/internal/sanitizers.h
index 6b2a131925..7b7d166c74 100644
--- a/internal/sanitizers.h
+++ b/internal/sanitizers.h
@@ -64,8 +64,6 @@
 # define __asan_poison_memory_region(x, y)
 # define __asan_unpoison_memory_region(x, y)
 # define __asan_region_is_poisoned(x, y) 0
-# define __asan_get_current_fake_stack() NULL
-# define __asan_addr_is_in_fake_stack(fake_stack, slot, start, end) NULL
 #endif
 
 #if !__has_feature(memory_sanitizer)
@@ -185,28 +183,4 @@ asan_unpoison_object(VALUE obj, bool newobj_p)
     asan_unpoison_memory_region(ptr, SIZEOF_VALUE, newobj_p);
 }
 
-
-/*!
- * Checks if the given pointer is on an ASAN fake stack. If so, it returns the
- * address this variable has on the real frame; if not, it returns the origin
- * address unmodified.
- *
- * n.b. - _dereferencing_ the returned address is meaningless and should not
- * be done; even though ASAN reserves space for the variable in both the real and
- * fake stacks, the _value_ of that variable is only in the fake stack.
- *
- * n.b. - this only works for addresses passed in from local variables on the same
- * thread, because the ASAN fake stacks are threadlocal.
- *
- * \param[in] slot  the address of some local variable
- * \retval          a pointer to something from that frame on the _real_ machine stack
- */
-static inline void *
-asan_get_real_stack_addr(void* slot)
-{
-    VALUE *addr;
-    addr = __asan_addr_is_in_fake_stack(__asan_get_current_fake_stack(), slot, NULL, NULL);
-    return addr ? addr : slot;
-}
-
 #endif /* INTERNAL_SANITIZERS_H */