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Fix asan error when walking heap for T_PAYLOAD objects #4597

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Jun 22, 2021
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Fix asan error when walking heap for T_PAYLOAD objects #4597

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4 changes: 3 additions & 1 deletion gc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3552,16 +3552,18 @@ objspace_each_objects_try(VALUE arg)
while (cursor_end < pend) {
int payload_len = 0;

#if USE_RVARGC
while (cursor_end < pend && BUILTIN_TYPE((VALUE)cursor_end) != T_PAYLOAD) {
cursor_end++;
}

#if USE_RVARGC
//Make sure the Payload header slot is yielded
if (cursor_end < pend && BUILTIN_TYPE((VALUE)cursor_end) == T_PAYLOAD) {
payload_len = RPAYLOAD_LEN((VALUE)cursor_end);
cursor_end++;
}
#else
cursor_end = pend;
#endif

if ((*data->callback)(pstart, cursor_end, sizeof(RVALUE), data->data)) {
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