Read the comments in PullRequest (vibe-kanban 78898480)

#1789 Could you read comments in this PR?

Author: bjjwwang

svf/lib/AE/Svfexe/AEDetector.cpp

@@ -479,11 +479,23 @@ bool BufOverflowDetector::canSafelyAccessMemory(AbstractState& as, const SVF::SV
     SVFIR* svfir = PAG::getPAG();
     NodeID value_id = value->getId();
 
-    // In multi-entry analysis, some variables may not be initialized as addresses
+    // Lazy initialization for uninitialized pointer parameters in multi-entry analysis.
+    // When analyzing a function as an entry point (e.g., not called from main),
+    // pointer parameters may not have been initialized via AddrStmt.
+    //
+    // Example:
+    //   void process_buffer(char* buf, int len) {
+    //       buf[0] = 'a';  // accessing buf
+    //   }
+    // When analyzing process_buffer as an entry point, 'buf' is a function parameter
+    // with no AddrStmt, so it has no address information in the abstract state.
+    // We lazily initialize it to point to the black hole object (BlkPtr), representing
+    // an unknown but valid memory location. This allows the analysis to continue
+    // while being conservatively sound.
     if (!as[value_id].isAddr())
     {
-        // Conservatively assume safe when we don't have address information
-        return true;
+        NodeID blkPtrId = svfir->getBlkPtr();
+        as[value_id] = AddressValue(AbstractState::getVirtualMemAddress(blkPtrId));
     }
     for (const auto& addr : as[value_id].getAddrs())
     {