Mercurial > cpython-lru_cache-weakref
diff Python/compile.c @ 34630:660419bdb4ae legacy-trunk
Preserve sign of -0.0 when result is run through marshal.
| author | Raymond Hettinger <python@rcn.com> |
|---|---|
| date | Wed, 23 Feb 2005 13:37:55 +0000 |
| parents | fcacf9d4b8f0 |
| children | a9f161e36bf9 |
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--- a/Python/compile.c Tue Feb 22 15:33:26 2005 +0000 +++ b/Python/compile.c Wed Feb 23 13:37:55 2005 +0000 @@ -545,7 +545,7 @@ static int fold_unaryops_on_constants(unsigned char *codestr, PyObject *consts) { - PyObject *newconst, *v; + PyObject *newconst=NULL, *v; int len_consts, opcode; /* Pre-conditions */ @@ -557,7 +557,9 @@ opcode = codestr[3]; switch (opcode) { case UNARY_NEGATIVE: - newconst = PyNumber_Negative(v); + /* Preserve the sign of -0.0 */ + if (PyObject_IsTrue(v) == 1) + newconst = PyNumber_Negative(v); break; case UNARY_CONVERT: newconst = PyObject_Repr(v);