Describing volatile C++ datatypes (#597)

Author: sevaa

elftools/dwarf/datatype_cpp.py

@@ -12,7 +12,8 @@
 cpp_symbols = dict(
     pointer   = "*",
     reference = "&",
-    const     = "const")
+    const     = "const",
+    volatile  = "volatile")
 
 def describe_cpp_datatype(var_die):
     return str(parse_cpp_datatype(var_die))
@@ -36,8 +37,8 @@ def parse_cpp_datatype(var_die):
 
     mods = []
     # Unlike readelf, dwarfdump doesn't chase typedefs
-    while type_die.tag in ('DW_TAG_const_type', 'DW_TAG_pointer_type', 'DW_TAG_reference_type'):
-        modifier = _strip_type_tag(type_die) # const/reference/pointer
+    while type_die.tag in ('DW_TAG_const_type', 'DW_TAG_volatile_type', 'DW_TAG_pointer_type', 'DW_TAG_reference_type'):
+        modifier = _strip_type_tag(type_die) # const/volatile/reference/pointer
         mods.insert(0, modifier)
         if not 'DW_AT_type' in type_die.attributes: # void* is encoded as a pointer to nothing
             t.name = t.tag = "void"
@@ -145,9 +146,9 @@ def __str__(self):
         mods = self.modifiers
 
         parts = []
-        # Initial const applies to the var ifself, other consts apply to the pointee
-        if len(mods) and mods[0] == 'const':
-            parts.append("const")
+        # Initial const/volatile applies to the var ifself, other consts apply to the pointee
+        if len(mods) and mods[0] in ('const', 'volatile'):
+            parts.append(mods[0])
             mods = mods[1:]
 
         # ref->const in the end, const goes in front