From cdf515793f839021850f29d3923d7f4fd7c33482 Mon Sep 17 00:00:00 2001
From: Nikita Smith <nikita.smith@epicgames.com>
Date: Mon, 18 Aug 2025 15:42:47 -0700
Subject: [PATCH] stop walking on reaching an undefined symbol

---
 src/linker/lnk.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/linker/lnk.c b/src/linker/lnk.c
index 0a2621ee..6a62f2ca 100644
--- a/src/linker/lnk.c
+++ b/src/linker/lnk.c
@@ -1138,6 +1138,9 @@ lnk_opt_ref(TP_Context *tp, LNK_SymbolTable *symtab, LNK_Config *config, LNK_Obj
           if (reloc_parsed.storage_class == COFF_SymStorageClass_External) {
             LNK_Symbol *defn = lnk_symbol_table_search(symtab, LNK_SymbolScope_Defined, ref_parsed.name);
             next_ref = defn->u.defined;
+          } else {
+            MemoryZeroStruct(&ref_symbol);
+            break;
           }
         } else if (ref_interp == COFF_SymbolValueInterp_Weak) {
           LNK_Symbol *defn = lnk_symbol_table_search(symtab, LNK_SymbolScope_Defined, ref_parsed.name);