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compiler: don't emit SyntaxWarning on const stmt

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Issue #26204: the compiler doesn't emit SyntaxWarning warnings anymore when
constant statements are ignored.
This commit is contained in:
Victor Stinner 2016-02-08 22:45:06 +01:00
parent 896632ea6b
commit 15a3095d64
5 changed files with 28 additions and 76 deletions
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26
Python/compile.c
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@ -2619,33 +2619,13 @@ compiler_visit_stmt_expr(struct compiler *c, expr_ty value)
switch (value->kind)
{
case Str_kind:
case Ellipsis_kind:
/* Issue #26204: ignore string statement, but don't emit a
* SyntaxWarning. Triple quoted strings is a common syntax for
* multiline comments.
*
* Don't emit warning on "def f(): ..." neither. It's a legit syntax
* for abstract function. */
return 1;
case Bytes_kind:
case Num_kind:
case Ellipsis_kind:
case Bytes_kind:
case NameConstant_kind:
case Constant_kind:
{
PyObject *msg = PyUnicode_FromString("ignore constant statement");
if (msg == NULL)
return 0;
if (PyErr_WarnExplicitObject(PyExc_SyntaxWarning,
msg,
c->c_filename, c->u->u_lineno,
NULL, NULL) == -1) {
Py_DECREF(msg);
return 0;
}
Py_DECREF(msg);
/* ignore constant statement */
return 1;
}
default:
break;