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| author | Ivan Maidanski <ivmai@mail.ru> | 2023-04-08 13:00:11 +0300 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2023-04-28 22:16:18 +0300 |
| commit | e0a3770947c772fee157fe0d1ff56ea6f06cbaa1 (patch) | |
| tree | 52155229820cef051128d9d77fc79c44325294bc | |
| parent | f2f784b89297e5cb620078913c2f631cea546386 (diff) | |
| download | bdwgc-e0a3770947c772fee157fe0d1ff56ea6f06cbaa1.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 1e70d07a..b35de7d6 100644 --- a/include/private/gc_pmark.h +++ b/include/private/gc_pmark.h @@ -200,7 +200,8 @@ GC_INNER mse * GC_signal_mark_stack_overflow(mse *msp); # 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) |