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| author | Ivan Maidanski <ivmai@mail.ru> | 2023-04-08 13:00:11 +0300 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2023-04-27 14:04:52 +0300 |
| commit | c9a1736b038e85da8444789825cb382aef4ecdb2 (patch) | |
| tree | 4e2ea0a60cb2faff516c59f34b21ff416bb36405 | |
| parent | a63e6e8abad6880ed19f80e73523403d303cea48 (diff) | |
| download | bdwgc-c9a1736b038e85da8444789825cb382aef4ecdb2.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.
| -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 6de59e35..d86af0c6 100644 --- a/include/private/gc_pmark.h +++ b/include/private/gc_pmark.h @@ -223,7 +223,8 @@ 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) |