Index: llvm/lib/ObjCopy/ELF/ELFObject.cpp
===================================================================
--- llvm/lib/ObjCopy/ELF/ELFObject.cpp
+++ llvm/lib/ObjCopy/ELF/ELFObject.cpp
@@ -1704,6 +1704,12 @@
     else
       return Data.takeError();
   case SHT_SYMTAB: {
+    // Multiple SHT_SYMTAB sections are forbidden by the ELF gABI.
+    if (Obj.SymbolTable != nullptr)
+      return createStringError(
+          llvm::errc::invalid_argument,
+          "found multiple SHT_SYMTAB sections. "
+          "llvm-readelf may help you investigate the issue.");
     auto &SymTab = Obj.addSection<SymbolTableSection>();
     Obj.SymbolTable = &SymTab;
     return SymTab;
Index: llvm/test/tools/llvm-objcopy/ELF/symbol-prohibit-multiple-symtab-sections.test
===================================================================
--- /dev/null
+++ llvm/test/tools/llvm-objcopy/ELF/symbol-prohibit-multiple-symtab-sections.test
@@ -0,0 +1,17 @@
+# According to the ELF gABI, "Currently, an object file may have only one 
+# section of each type [SHT_SYMTAB and SHT_DYNSYM], but this restriction may be relaxed in the future.".
+# RUN: yaml2obj %s -o %t
+# RUN: not llvm-objcopy %t /dev/null 2>&1 | FileCheck %s
+
+# CHECK: error: found multiple SHT_SYMTAB sections. llvm-readelf may help you investigate the issue
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_REL
+Sections:
+  - Name: .symtab
+    Type: SHT_SYMTAB
+  - Name: .symtab2
+    Type: SHT_SYMTAB