[Python-Dev] Baffled by PyArg_ParseTupleAndKeywords modification

Jeremy Hylton jeremy at alum.mit.edu
Tue Feb 14 14:05:32 CET 2006

On 2/14/06, "Martin v. Löwis" <martin at v.loewis.de> wrote:
> Jeremy Hylton wrote:
> > The compiler in question is gcc and the warning can be turned off with
> > -Wno-write-strings.  I think we'd be better off leaving that option
> > on, though.  This warning will help me find places where I'm passing a
> > string literal to a function that does not take a const char*.  That's
> > valuable, not insensate.
> Hmm. I'd say this depends on what your reaction to the warning is.
> If you sprinkle const_casts in the code, nothing is gained.

Except for the Python APIs, we would declare the function as taking a
const char* if took a const char*.  If the function legitimately takes
a char*, then you have to change the code to avoid a segfault.

> Perhaps there is some value in finding functions which ought to expect
> const char*. For that, occasional checks should be sufficient; I cannot
> see a point in having code permanently pass with that option. In
> particular not if you are interfacing with C libraries.

I don't understand what you mean:  I'm not sure what you mean by
"occasional checks" or "permanently pass".  The compiler flags are
always the same.


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