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This commit is contained in:
Justin Ethier 2015-11-24 23:29:44 -05:00
parent b6dc8c8285
commit 46dff7fc38
1 changed files with 12 additions and 6 deletions
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18
include/cyclone/types.h
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@ -67,12 +67,18 @@ typedef struct gc_free_list_t gc_free_list;
struct gc_free_list_t {
// somehow this size param is being overwritten by a "mark() =".
// how could that happen?
somehow it appears free list pointers are being used where heap objects are
expected. could this be as simple as objects being sweeped that should not
have been? unfortunately it is harder to figure how why the objects were
sweeped. were they not marked properly? is there a race condition? maybe
more than one issue? what is going on?
unsigned int dummy; // just for testing/evaluation, this line is NOT a fix!!
//somehow it appears free list pointers are being used where heap objects are
//expected. could this be as simple as objects being sweeped that should not
//have been? unfortunately it is harder to figure how why the objects were
//sweeped. were they not marked properly? is there a race condition? maybe
//more than one issue? what is going on?
//
// the following line does not solve the problem. in fact, with this in
// place there are still cases where the tag is a multiple of 32, implying
// again that a free list node is being used as a heap object. IE, the
// size value is being read into the tag field by code expecting a heap obj.
//
//unsigned int dummy; // just for testing/evaluation, this line is NOT a fix!!
unsigned int size;
gc_free_list *next;
};