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SF bug 994255: Py_RETURN_NONE causes too much warnings

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Rewrote Py_RETURN_{NONE, TRUE, FALSE} to expand to comma expressions
rather than "do {} while(0)" thingies.  The OP complained because he
likes using MS /W4 sometimes, and then all his uses of these things
generate nuisance warnings about testing a constant expression (in
the "while(0)" part).  Comma expressions don't have this problem
(although it's a lucky accident that comma expressions suffice for these
macros!).
This commit is contained in:
Tim Peters 2004-07-22 01:46:43 +00:00
parent aa1c7ff7e8
commit 5980ff2d92
2 changed files with 3 additions and 3 deletions
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2
Include/object.h
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@ -650,7 +650,7 @@ PyAPI_DATA(PyObject) _Py_NoneStruct; /* Don't use this directly */
#define Py_None (&_Py_NoneStruct)
/* Macro for returning Py_None from a function */
#define Py_RETURN_NONE do {Py_INCREF(Py_None); return Py_None;} while (0)
#define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
/*
Py_NotImplemented is a singleton used to signal that an operation is