[pypy-dev] What Causes An Ambiguous low-level helper specialization Error?

Andrew Francis andrewfr_ice at yahoo.com
Wed Jan 25 18:53:36 CET 2012

Hello Armin et al:
I did a hg pull and a hg update (and a hg update stm) and hg heads. I didn't see any changes to the aforementioned files.

Now I get the following error (I am assuming all bets are off if I am using out-of-date or wrong files):

[translation:ERROR]     return r_str.ll.do_stringformat(hop, sourcevars)
[translation:ERROR]    File "/home/andrew/pypy-stm/pypy/rpython/lltypesystem/rstr.py", line 978, in do_stringformat
[translation:ERROR]     assert isinstance(r_arg, IntegerRepr)
[translation:ERROR]  AssertionError
[translation] start debugger...
> /home/andrew/pypy-stm/pypy/rpython/lltypesystem/rstr.py(978)do_stringformat()
-> assert isinstance(r_arg, IntegerRepr)


 From: Armin Rigo <arigo at tunes.org>
To: Andrew Francis <andrewfr_ice at yahoo.com> 
Cc: Benjamin Peterson <benjamin at python.org>; "pypy-dev at codespeak.net" <pypy-dev at codespeak.net> 
Sent: Tuesday, January 24, 2012 4:16 PM
Subject: Re: [pypy-dev] What Causes An Ambiguous low-level helper specialization Error?
Hi Andrew,

Oups, sorry, it's a bug.

r51744 80d054b4615d  | arigo | 2012-01-24 22:07 +0100


Test and fix for "Ambiguous low-level helper specialization" when
the same RPython program contains several calls to


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