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Use `GC_base ()' to determine whether a pointer points to the heap.

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* libguile/boehm-gc.h (SCM_I_IS_POINTER_TO_THE_HEAP): Use `GC_base ()'
  instead of `GC_{least,greatest}_plausible_heap addr' since the GC does
  not assume that the heap is contiguous (suggested by Ivan Maidanski
  and Hans Boehm).
This commit is contained in:
Ludovic Courtès 2009-02-01 21:59:32 +01:00
parent 9b41542f4d
commit 475461b7a0
1 changed files with 2 additions and 5 deletions
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7
libguile/boehm-gc.h
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@ -46,12 +46,9 @@ typedef void *GC_PTR;
#endif #endif
#include <gc/gc_mark.h>
/* Return true if PTR points to the heap. */ /* Return true if PTR points to the heap. */
#define SCM_I_IS_POINTER_TO_THE_HEAP(ptr) \ #define SCM_I_IS_POINTER_TO_THE_HEAP(ptr) \
((void *) (ptr) >= GC_least_plausible_heap_addr \ (GC_base (ptr) != NULL)
&& (void *) (ptr) <= GC_greatest_plausible_heap_addr)
/* Register a disappearing link for the object pointed to by OBJ such that /* Register a disappearing link for the object pointed to by OBJ such that
the pointer pointed to be LINK is cleared when OBJ is reclaimed. Do so the pointer pointed to be LINK is cleared when OBJ is reclaimed. Do so