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raise error on duplicate function arguments

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example:

>>> def f(a,a):print a
...
SyntaxError: duplicate argument in function definition
This commit is contained in:
Peter Schneider-Kamp 2000-07-13 06:15:04 +00:00
parent 91826ed2a9
commit 11384c60f6
1 changed files with 10 additions and 1 deletions
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11
Python/compile.c
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@ -3092,6 +3092,7 @@ com_arglist(c, n)
node *ch = CHILD(n, i);
node *fp;
char *name;
PyObject *nameval;
if (TYPE(ch) == STAR || TYPE(ch) == DOUBLESTAR)
break;
REQ(ch, fpdef); /* fpdef: NAME | '(' fplist ')' */
@ -3103,7 +3104,15 @@ com_arglist(c, n)
sprintf(nbuf, ".%d", i);
complex = 1;
}
com_newlocal(c, name);
nameval = PyString_InternFromString(name);
if (nameval == NULL) {
c->c_errors++;
}
if (PyDict_GetItem(c->c_locals, nameval)) {
com_error(c, PyExc_SyntaxError,"duplicate argument in function definition");
}
com_newlocal_o(c, nameval);
Py_DECREF(nameval);
c->c_argcount++;
if (++i >= nch)
break;