diff options
Diffstat (limited to 'Objects/sliceobject.c')
| -rw-r--r-- | Objects/sliceobject.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Objects/sliceobject.c b/Objects/sliceobject.c index 7499d31..9a268b7 100644 --- a/Objects/sliceobject.c +++ b/Objects/sliceobject.c @@ -151,13 +151,15 @@ PySlice_GetIndicesEx(PySliceObject *r, int length, if (*stop < 0) *stop = -1; if (*stop > length) *stop = length; } - - if (*step < 0) { + + if ((*stop - *start)*(*step) <= 0) { + *slicelength = 0; + } + else if (*step < 0) { *slicelength = (*stop-*start+1)/(*step)+1; } else { *slicelength = (*stop-*start-1)/(*step)+1; } - if (*slicelength < 0) *slicelength = 0; return 0; } |