Fix test_cpp failure in case GC_DEBUG is defined

Now GC_bytes_freed is updated even if the real deallocation of the
explicitly freed object is deferred.

* dbg_mlc.c (GC_debug_free): Increment GC_bytes_freed by hhdr->hb_sz
in case of GC_free is not called (when the object is filled with
GC_FREED_MEM_MARKER); add comment.

1 files changed, 8 insertions, 2 deletions

diff --git a/dbg_mlc.c b/dbg_mlc.c
index 50eda33f..af9652af 100644
--- a/dbg_mlc.c
+++ b/dbg_mlc.c
@@ -799,11 +799,17 @@ GC_API void GC_CALL GC_debug_free(void * p)
         GC_free(base);
       } else {
         word i;
-        word obj_sz = BYTES_TO_WORDS(hhdr->hb_sz - sizeof(oh));
+        word sz = hhdr -> hb_sz;
+        word obj_sz = BYTES_TO_WORDS(sz - sizeof(oh));
 
         for (i = 0; i < obj_sz; ++i)
           ((word *)p)[i] = GC_FREED_MEM_MARKER;
-        GC_ASSERT((word *)p + i == (word *)(base + hhdr -> hb_sz));
+        GC_ASSERT((word *)p + i == (word *)(base + sz));
+        /* Update the counter even though the real deallocation */
+        /* is deferred.                                         */
+        LOCK();
+        GC_bytes_freed += sz;
+        UNLOCK();
       }
     } /* !GC_find_leak */
 }