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| author | Ivan Maidanski <ivmai@mail.ru> | 2023-04-08 13:00:11 +0300 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2023-04-09 10:55:49 +0300 |
| commit | 2da23516ce16f603b716586dcb21db5b03784626 (patch) | |
| tree | e273ca74872c86d4c37c8f0dbca0e0f2d095483b /include | |
| parent | b6a813b79253862a2f0a01de8cc45740acbb00b5 (diff) | |
| download | bdwgc-2da23516ce16f603b716586dcb21db5b03784626.tar.gz | |
Fix null pointer dereference in TRACE_TARGET
* include/private/gc_pmark.h [ENABLE_TRACE] (TRACE_TARGET): Do not
dereference GC_trace_addr if it is not a pointer to a heap object.
Diffstat (limited to 'include')
| -rw-r--r-- | include/private/gc_pmark.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/private/gc_pmark.h b/include/private/gc_pmark.h index 80afdec2..286bf179 100644 --- a/include/private/gc_pmark.h +++ b/include/private/gc_pmark.h @@ -224,7 +224,8 @@ GC_INLINE mse * GC_push_obj(ptr_t obj, hdr * hhdr, mse * mark_stack_top, # define TRACE(source, cmd) \ if (GC_trace_addr != 0 && (ptr_t)(source) == GC_trace_addr) cmd # define TRACE_TARGET(target, cmd) \ - if (GC_trace_addr != 0 && (target) == *(ptr_t *)GC_trace_addr) cmd + if (GC_trace_addr != NULL && GC_is_heap_ptr(GC_trace_addr) \ + && (target) == *(ptr_t *)GC_trace_addr) cmd #else # define TRACE(source, cmd) # define TRACE_TARGET(source, cmd) |