New issue 2354: Confusing type message: do_stringformat()-> assert
s_str.is_constant()
https://bitbucket.org/pypy/pypy/issues/2354/confusing-type-message-do_stringformat
Sarah Mount:
In the example interpreter below, there is some confusion between class
attributes and object attributes. The "bug" here is that the error message that
the RPython annotator gives is confusing.
```
#!python
$ cat example2.py
class Interpreter(object):
help_message = 'usage: %s'
def __init__(self, name):
self.name = name
def get_entry_point(self):
def entry_point(argv):
print self.help_message % self.name
return 0
return entry_point
class MyInterpreter(Interpreter):
help_message = 'I WANT MY OWN HELP MESSAGE!!! usage: %s'
def __init__(self):
Interpreter.__init__(self, 'myinterp')
# Fix type error by removing MyInterpreter.help_message
# and writing:
#
# Interpreter.help_message = 'I WANT MY OWN HELP MESSAGE!!! usage: %s'
#
# in this constructor instead.
def get_entry_point(self):
def entry_point(argv):
print self.help_message % self.name
return 0
return entry_point
def target(driver, args):
return MyInterpreter().get_entry_point(), None
$ ../pypy/rpython/bin/rpython -Ojit example2.py
[translation:info] Error:
File
"/home/snim2/Desktop/working/pypy/rpython/translator/goal/translate.py", line
317, in main
drv.proceed(goals)
File "/home/snim2/Desktop/working/pypy/rpython/translator/driver.py", line
551, in proceed
result = self._execute(goals, task_skip = self._maybe_skip())
File
"/home/snim2/Desktop/working/pypy/rpython/translator/tool/taskengine.py", line
114, in _execute
res = self._do(goal, taskcallable, *args, **kwds)
File "/home/snim2/Desktop/working/pypy/rpython/translator/driver.py", line
278, in _do
res = func()
File "/home/snim2/Desktop/working/pypy/rpython/translator/driver.py", line
345, in task_rtype_lltype
rtyper.specialize(dont_simplify_again=True)
File "/home/snim2/Desktop/working/pypy/rpython/rtyper/rtyper.py", line 188,
in specialize
self.specialize_more_blocks()
File "/home/snim2/Desktop/working/pypy/rpython/rtyper/rtyper.py", line 231,
in specialize_more_blocks
self.specialize_block(block)
File "/home/snim2/Desktop/working/pypy/rpython/rtyper/rtyper.py", line 317,
in specialize_block
self.translate_hl_to_ll(hop, varmapping)
File "/home/snim2/Desktop/working/pypy/rpython/rtyper/rtyper.py", line 443,
in translate_hl_to_ll
resultvar = hop.dispatch()
File "/home/snim2/Desktop/working/pypy/rpython/rtyper/rtyper.py", line 660,
in dispatch
return translate_meth(self)
File "<259-codegen
/home/snim2/Desktop/working/pypy/rpython/rtyper/rtyper.py:523>", line 5, in
translate_op_mod
return pair(r_arg1, r_arg2).rtype_mod(hop)
File "/home/snim2/Desktop/working/pypy/rpython/rtyper/rstr.py", line 554, in
rtype_mod
return r_str.ll.do_stringformat(hop, [(hop.args_v[1], hop.args_r[1])])
File "/home/snim2/Desktop/working/pypy/rpython/rtyper/lltypesystem/rstr.py",
line 1151, in do_stringformat
assert s_str.is_constant()
[translation:ERROR] AssertionError
[translation] start debugger...
> /home/snim2/Desktop/working/pypy/rpython/rtyper/lltypesystem/rstr.py(1151)do_stringformat()
-> assert s_str.is_constant()
```
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