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Issue #19308: fix the gdb plugin on gdbs linked with Python 3
This commit is contained in:
Antoine Pitrou
parent
5bef410471
commit
e50240c504
@ -63,7 +63,7 @@ def run_gdb(*args, **env_vars):
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return out.decode('utf-8', 'replace'), err.decode('utf-8', 'replace')
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# Verify that "gdb" was built with the embedded python support enabled:
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gdbpy_version, _ = run_gdb("--eval-command=python import sys; print sys.version_info")
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gdbpy_version, _ = run_gdb("--eval-command=python import sys; print(sys.version_info)")
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if not gdbpy_version:
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raise unittest.SkipTest("gdb not built with embedded python support")
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@ -40,11 +40,21 @@ the type names are known to the debugger
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The module also extends gdb with some python-specific commands.
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'''
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from __future__ import with_statement
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# NOTE: some gdbs are linked with Python 3, so this file should be dual-syntax
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# compatible (2.6+ and 3.0+). See #19308.
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from __future__ import print_function, with_statement
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import gdb
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import os
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import locale
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import sys
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if sys.version_info[0] >= 3:
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unichr = chr
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xrange = range
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long = int
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# Look up the gdb.Type for some standard types:
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_type_char_ptr = gdb.lookup_type('char').pointer() # char*
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_type_unsigned_char_ptr = gdb.lookup_type('unsigned char').pointer() # unsigned char*
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@ -58,16 +68,16 @@ _is_pep393 = None
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SIZEOF_VOID_P = _type_void_ptr.sizeof
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Py_TPFLAGS_HEAPTYPE = (1L << 9)
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Py_TPFLAGS_HEAPTYPE = (1 << 9)
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Py_TPFLAGS_LONG_SUBCLASS = (1L << 24)
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Py_TPFLAGS_LIST_SUBCLASS = (1L << 25)
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Py_TPFLAGS_TUPLE_SUBCLASS = (1L << 26)
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Py_TPFLAGS_BYTES_SUBCLASS = (1L << 27)
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Py_TPFLAGS_UNICODE_SUBCLASS = (1L << 28)
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Py_TPFLAGS_DICT_SUBCLASS = (1L << 29)
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Py_TPFLAGS_BASE_EXC_SUBCLASS = (1L << 30)
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Py_TPFLAGS_TYPE_SUBCLASS = (1L << 31)
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Py_TPFLAGS_LONG_SUBCLASS = (1 << 24)
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Py_TPFLAGS_LIST_SUBCLASS = (1 << 25)
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Py_TPFLAGS_TUPLE_SUBCLASS = (1 << 26)
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Py_TPFLAGS_BYTES_SUBCLASS = (1 << 27)
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Py_TPFLAGS_UNICODE_SUBCLASS = (1 << 28)
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Py_TPFLAGS_DICT_SUBCLASS = (1 << 29)
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Py_TPFLAGS_BASE_EXC_SUBCLASS = (1 << 30)
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Py_TPFLAGS_TYPE_SUBCLASS = (1 << 31)
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MAX_OUTPUT_LEN=1024
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@ -90,32 +100,39 @@ def safety_limit(val):
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def safe_range(val):
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# As per range, but don't trust the value too much: cap it to a safety
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# threshold in case the data was corrupted
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return xrange(safety_limit(val))
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return xrange(safety_limit(int(val)))
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def write_unicode(file, text):
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# Write a byte or unicode string to file. Unicode strings are encoded to
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# ENCODING encoding with 'backslashreplace' error handler to avoid
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# UnicodeEncodeError.
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if isinstance(text, unicode):
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text = text.encode(ENCODING, 'backslashreplace')
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file.write(text)
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if sys.version_info[0] >= 3:
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def write_unicode(file, text):
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file.write(text)
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else:
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def write_unicode(file, text):
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# Write a byte or unicode string to file. Unicode strings are encoded to
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# ENCODING encoding with 'backslashreplace' error handler to avoid
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# UnicodeEncodeError.
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if isinstance(text, unicode):
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text = text.encode(ENCODING, 'backslashreplace')
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file.write(text)
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def os_fsencode(filename):
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if not isinstance(filename, unicode):
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return filename
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encoding = sys.getfilesystemencoding()
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if encoding == 'mbcs':
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# mbcs doesn't support surrogateescape
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return filename.encode(encoding)
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encoded = []
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for char in filename:
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# surrogateescape error handler
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if 0xDC80 <= ord(char) <= 0xDCFF:
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byte = chr(ord(char) - 0xDC00)
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else:
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byte = char.encode(encoding)
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encoded.append(byte)
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return ''.join(encoded)
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try:
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os_fsencode = os.fsencode
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except ImportError:
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def os_fsencode(filename):
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if not isinstance(filename, unicode):
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return filename
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encoding = sys.getfilesystemencoding()
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if encoding == 'mbcs':
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# mbcs doesn't support surrogateescape
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return filename.encode(encoding)
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encoded = []
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for char in filename:
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# surrogateescape error handler
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if 0xDC80 <= ord(char) <= 0xDCFF:
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byte = chr(ord(char) - 0xDC00)
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else:
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byte = char.encode(encoding)
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encoded.append(byte)
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return ''.join(encoded)
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class StringTruncated(RuntimeError):
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pass
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@ -322,8 +339,8 @@ class PyObjectPtr(object):
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# class
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return cls
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#print 'tp_flags = 0x%08x' % tp_flags
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#print 'tp_name = %r' % tp_name
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#print('tp_flags = 0x%08x' % tp_flags)
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#print('tp_name = %r' % tp_name)
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name_map = {'bool': PyBoolObjectPtr,
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'classobj': PyClassObjectPtr,
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@ -733,14 +750,14 @@ class PyLongObjectPtr(PyObjectPtr):
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'''
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ob_size = long(self.field('ob_size'))
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if ob_size == 0:
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return 0L
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return 0
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ob_digit = self.field('ob_digit')
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if gdb.lookup_type('digit').sizeof == 2:
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SHIFT = 15L
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SHIFT = 15
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else:
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SHIFT = 30L
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SHIFT = 30
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digits = [long(ob_digit[i]) * 2**(SHIFT*i)
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for i in safe_range(abs(ob_size))]
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@ -1595,12 +1612,12 @@ class PyList(gdb.Command):
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# py-list requires an actual PyEval_EvalFrameEx frame:
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frame = Frame.get_selected_bytecode_frame()
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if not frame:
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print 'Unable to locate gdb frame for python bytecode interpreter'
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print('Unable to locate gdb frame for python bytecode interpreter')
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return
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pyop = frame.get_pyop()
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if not pyop or pyop.is_optimized_out():
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print 'Unable to read information on python frame'
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print('Unable to read information on python frame')
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return
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filename = pyop.filename()
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@ -1656,9 +1673,9 @@ def move_in_stack(move_up):
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frame = iter_frame
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if move_up:
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print 'Unable to find an older python frame'
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print('Unable to find an older python frame')
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else:
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print 'Unable to find a newer python frame'
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print('Unable to find a newer python frame')
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class PyUp(gdb.Command):
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'Select and print the python stack frame that called this one (if any)'
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@ -1740,23 +1757,23 @@ class PyPrint(gdb.Command):
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frame = Frame.get_selected_python_frame()
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if not frame:
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print 'Unable to locate python frame'
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print('Unable to locate python frame')
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return
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pyop_frame = frame.get_pyop()
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if not pyop_frame:
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print 'Unable to read information on python frame'
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print('Unable to read information on python frame')
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return
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pyop_var, scope = pyop_frame.get_var_by_name(name)
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if pyop_var:
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print ('%s %r = %s'
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print('%s %r = %s'
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% (scope,
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name,
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pyop_var.get_truncated_repr(MAX_OUTPUT_LEN)))
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else:
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print '%r not found' % name
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print('%r not found' % name)
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PyPrint()
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@ -1774,16 +1791,16 @@ class PyLocals(gdb.Command):
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frame = Frame.get_selected_python_frame()
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if not frame:
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print 'Unable to locate python frame'
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print('Unable to locate python frame')
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return
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pyop_frame = frame.get_pyop()
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if not pyop_frame:
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print 'Unable to read information on python frame'
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print('Unable to read information on python frame')
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return
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for pyop_name, pyop_value in pyop_frame.iter_locals():
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print ('%s = %s'
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print('%s = %s'
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% (pyop_name.proxyval(set()),
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pyop_value.get_truncated_repr(MAX_OUTPUT_LEN)))
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