Re: [patch#2] PR other/65366: Fix gdbhooks.py for GDB with Python3

[Richard Biener <richard.guenther@gmail.com>]

On Wed, Jun 3, 2015 at 3:26 PM, Jan Kratochvil
<jan.kratochvil@redhat.com> wrote:
> On Wed, 03 Jun 2015 10:25:20 +0200, Richard Biener wrote:
>> gdb 7.9, python 2.7.6
>
> attaching a fix; I do not know much Python so check it, please.
>
> OK for check-in?

Python Exception <type 'exceptions.NameError'> global name 'sys' is not defined:
Python Exception <type 'exceptions.NameError'> global name 'sys' is not defined:
Python Exception <type 'exceptions.NameError'> global name 'sys' is not defined:
Breakpoint 5, fold_binary_loc (loc=17953, code=LT_EXPR, type=, op0=, op1=)
    at /space/rguenther/tramp3d/trunk/gcc/fold-const.c:9862

adding a

import sys

makes it work fine though.

Thus, ok with also adding a imoprt sys.

Thanks,
Richard.

> I have found it reproducible by :
>         gdb -ex 'source /home/jkratoch/redhat/gcchead/gcc/gdbhooks.py' -ex 'b *0xec25b0' -ex r -ex 'set python print-stack full' -ex 'p *(stmt_vec_info)$r12' --args /home/jkratoch/redhat/gcchead-build/gcc/cc1plus ~/t/sigtest.C -o /dev/null -Wall -g -O3
>
> 0xec25b0=
> Breakpoint 1, free_stmt_vec_info (stmt=<gimple_debug 0x7ffff1635b80>) at /home/jkratoch/redhat/gcchead/gcc/tree-vect-stmts.c:7754
> 7754      free (stmt_info);
>
>
> Jan
>
> gcc/
> 2015-06-03  Jan Kratochvil  <jan.kratochvil@redhat.com>
>
>         PR other/65366
>         * gdbhooks.py (intptr): New function.  Replace int(...) by intptr(...).
>
> diff --git a/gcc/gdbhooks.py b/gcc/gdbhooks.py
> index 20842bb..fe83376 100644
> --- a/gcc/gdbhooks.py
> +++ b/gcc/gdbhooks.py
> @@ -149,6 +149,12 @@ tree_code_class_dict = gdb.types.make_enum_dict(gdb.lookup_type('enum tree_code_
>  tcc_type = tree_code_class_dict['tcc_type']
>  tcc_declaration = tree_code_class_dict['tcc_declaration']
>
> +# Python3 has int() with arbitrary precision (bignum).  Python2 int() is 32-bit
> +# on 32-bit hosts but remote targets may have 64-bit pointers there; Python2
> +# long() is always 64-bit but Python3 no longer has anything named long.
> +def intptr(gdbval):
> +    return long(gdbval) if sys.version_info.major == 2 else int(gdbval)
> +
>  class Tree:
>      """
>      Wrapper around a gdb.Value for a tree, with various methods
> @@ -158,7 +164,7 @@ class Tree:
>          self.gdbval = gdbval
>
>      def is_nonnull(self):
> -        return int(self.gdbval)
> +        return intptr(self.gdbval)
>
>      def TREE_CODE(self):
>          """
> @@ -197,7 +203,7 @@ class TreePrinter:
>          # like gcc/print-tree.c:print_node_brief
>          # #define TREE_CODE(NODE) ((enum tree_code) (NODE)->base.code)
>          # tree_code_name[(int) TREE_CODE (node)])
> -        if int(self.gdbval) == 0:
> +        if intptr(self.gdbval) == 0:
>              return '<tree 0x0>'
>
>          val_TREE_CODE = self.node.TREE_CODE()
> @@ -209,17 +215,17 @@ class TreePrinter:
>          val_tclass = val_tree_code_type[val_TREE_CODE]
>
>          val_tree_code_name = gdb.parse_and_eval('tree_code_name')
> -        val_code_name = val_tree_code_name[int(val_TREE_CODE)]
> +        val_code_name = val_tree_code_name[intptr(val_TREE_CODE)]
>          #print(val_code_name.string())
>
> -        result = '<%s 0x%x' % (val_code_name.string(), int(self.gdbval))
> -        if int(val_tclass) == tcc_declaration:
> +        result = '<%s 0x%x' % (val_code_name.string(), intptr(self.gdbval))
> +        if intptr(val_tclass) == tcc_declaration:
>              tree_DECL_NAME = self.node.DECL_NAME()
>              if tree_DECL_NAME.is_nonnull():
>                   result += ' %s' % tree_DECL_NAME.IDENTIFIER_POINTER()
>              else:
>                  pass # TODO: labels etc
> -        elif int(val_tclass) == tcc_type:
> +        elif intptr(val_tclass) == tcc_type:
>              tree_TYPE_NAME = Tree(self.gdbval['type_common']['name'])
>              if tree_TYPE_NAME.is_nonnull():
>                  if tree_TYPE_NAME.TREE_CODE() == IDENTIFIER_NODE:
> @@ -242,8 +248,8 @@ class CGraphNodePrinter:
>          self.gdbval = gdbval
>
>      def to_string (self):
> -        result = '<cgraph_node* 0x%x' % int(self.gdbval)
> -        if int(self.gdbval):
> +        result = '<cgraph_node* 0x%x' % intptr(self.gdbval)
> +        if intptr(self.gdbval):
>              # symtab_node::name calls lang_hooks.decl_printable_name
>              # default implementation (lhd_decl_printable_name) is:
>              #    return IDENTIFIER_POINTER (DECL_NAME (decl));
> @@ -261,12 +267,12 @@ class DWDieRefPrinter:
>          self.gdbval = gdbval
>
>      def to_string (self):
> -        if int(self.gdbval) == 0:
> +        if intptr(self.gdbval) == 0:
>              return '<dw_die_ref 0x0>'
> -        result = '<dw_die_ref 0x%x' % int(self.gdbval)
> +        result = '<dw_die_ref 0x%x' % intptr(self.gdbval)
>          result += ' %s' % self.gdbval['die_tag']
> -        if int(self.gdbval['die_parent']) != 0:
> -            result += ' <parent=0x%x %s>' % (int(self.gdbval['die_parent']),
> +        if intptr(self.gdbval['die_parent']) != 0:
> +            result += ' <parent=0x%x %s>' % (intptr(self.gdbval['die_parent']),
>                                               self.gdbval['die_parent']['die_tag'])
>
>          result += '>'
> @@ -279,13 +285,13 @@ class GimplePrinter:
>          self.gdbval = gdbval
>
>      def to_string (self):
> -        if int(self.gdbval) == 0:
> +        if intptr(self.gdbval) == 0:
>              return '<gimple 0x0>'
>          val_gimple_code = self.gdbval['code']
>          val_gimple_code_name = gdb.parse_and_eval('gimple_code_name')
> -        val_code_name = val_gimple_code_name[int(val_gimple_code)]
> +        val_code_name = val_gimple_code_name[intptr(val_gimple_code)]
>          result = '<%s 0x%x' % (val_code_name.string(),
> -                               int(self.gdbval))
> +                               intptr(self.gdbval))
>          result += '>'
>          return result
>
> @@ -306,9 +312,9 @@ class BasicBlockPrinter:
>          self.gdbval = gdbval
>
>      def to_string (self):
> -        result = '<basic_block 0x%x' % int(self.gdbval)
> -        if int(self.gdbval):
> -            result += ' (%s)' % bb_index_to_str(int(self.gdbval['index']))
> +        result = '<basic_block 0x%x' % intptr(self.gdbval)
> +        if intptr(self.gdbval):
> +            result += ' (%s)' % bb_index_to_str(intptr(self.gdbval['index']))
>          result += '>'
>          return result
>
> @@ -317,10 +323,10 @@ class CfgEdgePrinter:
>          self.gdbval = gdbval
>
>      def to_string (self):
> -        result = '<edge 0x%x' % int(self.gdbval)
> -        if int(self.gdbval):
> -            src = bb_index_to_str(int(self.gdbval['src']['index']))
> -            dest = bb_index_to_str(int(self.gdbval['dest']['index']))
> +        result = '<edge 0x%x' % intptr(self.gdbval)
> +        if intptr(self.gdbval):
> +            src = bb_index_to_str(intptr(self.gdbval['src']['index']))
> +            dest = bb_index_to_str(intptr(self.gdbval['dest']['index']))
>              result += ' (%s -> %s)' % (src, dest)
>          result += '>'
>          return result
> @@ -336,7 +342,7 @@ class Rtx:
>
>  def GET_RTX_LENGTH(code):
>      val_rtx_length = gdb.parse_and_eval('rtx_length')
> -    return int(val_rtx_length[code])
> +    return intptr(val_rtx_length[code])
>
>  def GET_RTX_NAME(code):
>      val_rtx_name = gdb.parse_and_eval('rtx_name')
> @@ -359,12 +365,12 @@ class RtxPrinter:
>          """
>          # We use print_inline_rtx to avoid a trailing newline
>          gdb.execute('call print_inline_rtx (stderr, (const_rtx) %s, 0)'
> -                    % int(self.gdbval))
> +                    % intptr(self.gdbval))
>          return ''
>
>          # or by hand; based on gcc/print-rtl.c:print_rtx
>          result = ('<rtx_def 0x%x'
> -                  % (int(self.gdbval)))
> +                  % (intptr(self.gdbval)))
>          code = self.rtx.GET_CODE()
>          result += ' (%s' % GET_RTX_NAME(code)
>          format_ = GET_RTX_FORMAT(code)
> @@ -380,11 +386,11 @@ class PassPrinter:
>          self.gdbval = gdbval
>
>      def to_string (self):
> -        result = '<opt_pass* 0x%x' % int(self.gdbval)
> -        if int(self.gdbval):
> +        result = '<opt_pass* 0x%x' % intptr(self.gdbval)
> +        if intptr(self.gdbval):
>              result += (' "%s"(%i)'
>                         % (self.gdbval['name'].string(),
> -                          int(self.gdbval['static_pass_number'])))
> +                          intptr(self.gdbval['static_pass_number'])))
>          result += '>'
>          return result
>
> @@ -401,10 +407,10 @@ class VecPrinter:
>      def to_string (self):
>          # A trivial implementation; prettyprinting the contents is done
>          # by gdb calling the "children" method below.
> -        return '0x%x' % int(self.gdbval)
> +        return '0x%x' % intptr(self.gdbval)
>
>      def children (self):
> -        if int(self.gdbval) == 0:
> +        if intptr(self.gdbval) == 0:
>              return
>          m_vecpfx = self.gdbval['m_vecpfx']
>          m_num = m_vecpfx['m_num']
>