Fix crash in dwarf2read.c with template parameters

[external/binutils.git] / gdb / dwarf2read.c

diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 2d6cb35..4251ed0 100644 (file)
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -16218,13 +16218,34 @@ process_structure_scope (struct die_info *die, struct dwarf2_cu *cu)
 
       if (has_template_parameters)
        {
-         /* Make sure that the symtab is set on the new symbols.
-            Even though they don't appear in this symtab directly,
-            other parts of gdb assume that symbols do, and this is
-            reasonably true.  */
-         for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i)
-           symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i),
-                              symbol_symtab (sym));
+         struct symtab *symtab;
+         if (sym != nullptr)
+           symtab = symbol_symtab (sym);
+         else if (cu->line_header != nullptr)
+           {
+             /* Any related symtab will do.  */
+             symtab
+               = cu->line_header->file_name_at (file_name_index (1))->symtab;
+           }
+         else
+           {
+             symtab = nullptr;
+             complaint (_("could not find suitable "
+                          "symtab for template parameter"
+                          " - DIE at %s [in module %s]"),
+                        sect_offset_str (die->sect_off),
+                        objfile_name (objfile));
+           }
+
+         if (symtab != nullptr)
+           {
+             /* Make sure that the symtab is set on the new symbols.
+                Even though they don't appear in this symtab directly,
+                other parts of gdb assume that symbols do, and this is
+                reasonably true.  */
+             for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i)
+               symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab);
+           }
        }
     }
 }