Index: source/Plugins/SymbolFile/DWARF/DWARFDebugLine.h
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFDebugLine.h
+++ source/Plugins/SymbolFile/DWARF/DWARFDebugLine.h
@@ -200,7 +200,7 @@
   ParseSupportFiles(const lldb::ModuleSP &module_sp,
                     const lldb_private::DWARFDataExtractor &debug_line_data,
                     const lldb_private::FileSpec &cu_comp_dir,
-                    dw_offset_t stmt_list,
+                    dw_offset_t stmt_list, bool is_dwarf64,
                     lldb_private::FileSpecList &support_files);
   static bool
   ParsePrologue(const lldb_private::DWARFDataExtractor &debug_line_data,
Index: source/Plugins/SymbolFile/DWARF/DWARFDebugLine.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFDebugLine.cpp
+++ source/Plugins/SymbolFile/DWARF/DWARFDebugLine.cpp
@@ -445,7 +445,7 @@
 bool DWARFDebugLine::ParseSupportFiles(
     const lldb::ModuleSP &module_sp, const DWARFDataExtractor &debug_line_data,
     const lldb_private::FileSpec &cu_comp_dir, dw_offset_t stmt_list,
-    FileSpecList &support_files) {
+    bool is_dwarf64, FileSpecList &support_files) {
   lldb::offset_t data_end = debug_line_data.GetByteSize();
   lldb::offset_t offset = stmt_list;
 
@@ -475,8 +475,9 @@
 
     // We don't parse the entire prologue, but skip the statement program.
     // The prologue's total_length does not include the length field itself.
-    // It can be 4 or 8 bytes, see DWARFDataExtractor::GetDWARFInitialLength().
-    offset = prologue_start + prologue.total_length + 4;
+    // DWARF64 has an additional 8 bytes length field.
+    uint32_t size_of_length_field = is_dwarf64 ? 12 : 4;
+    offset = prologue_start + prologue.total_length + size_of_length_field;
   } while (offset < data_end);
 
   return true;
Index: source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
+++ source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
@@ -933,7 +933,7 @@
         support_files.Append(*sc.comp_unit);
         return DWARFDebugLine::ParseSupportFiles(
             sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir,
-            stmt_list, support_files);
+            stmt_list, dwarf_cu->IsDWARF64(), support_files);
       }
     }
   }