1 files changed, 7 insertions, 0 deletions
diff --git a/tools/yaml2obj/yaml2elf.cpp b/tools/yaml2obj/yaml2elf.cpp
index 667718af38..421781ce14 100644
--- a/tools/yaml2obj/yaml2elf.cpp
+++ b/tools/yaml2obj/yaml2elf.cpp
@@ -199,6 +199,13 @@ static void handleSymtabSectionHeader(
     if (!Sym.Name.empty())
       Symbol.st_name = State.getStringTable().addString(Sym.Name);
     Symbol.setBindingAndType(Sym.Binding, Sym.Type);
+    unsigned Index;
+    if (State.getSN2I().lookupSection(Sym.Section, Index)) {
+      errs() << "error: Unknown section referenced: '" << Sym.Section
+             << "' by YAML symbol " << Sym.Name << ".\n";
+      exit(1);
+    }
+    Symbol.st_shndx = Index;
     Syms.push_back(Symbol);
   }