Public bug reported:
python 2.5 with ubuntu 7.10 gusty , i386 and x64 tried on three different
machines , complete reinstall of the os on one of the machines.
Ok get this I modify a file I am working on , type python driver.py to start my
app. It doesn't work , the next time I type the same command it runs correctly.
The same source code produces different results.
the app I am working on it for computational geometry class, and this is
driving me nuts, god help me I am about to do my dev work on my windows box.
Please the bug existed on a default install from ubuntu , I added to python 2.4
to one of my machines to try the different compiler . I don't know the inner
workings of python and how it handles compiles but there is something really
wrong. I was trying to see if there were any weird characters in any of the
files , there were none. I will get a tar ball to someone if they think they
can help. READ BELOW to see the "fun" I have had.
python driver.py
rendering original subdivision
split DCEL.Edge from <50, 250> to <75, 180>
ERROR
handle Split method threw error None DCEL.Edge from <50, 250> to <75, 180>
split DCEL.Edge from <105, 195> to <110, 120>
ERROR
handle Split method threw error None DCEL.Edge from <105, 195> to <110, 120>
end DCEL.Edge from <75, 180> to <105, 195>
Edge DCEL.Edge from <50, 250> to <75, 180> not in tree
*****************************************************************************************************
Now I run it with python2.4
python2.4 driver.py
rendering original subdivision
start DCEL.Edge from <50, 250> to <20, 175>*****LOOK HERE THIS IS THE SAME
POINT BUT RETURNED A DIFFERENT RESULT.
insert size 1
Insert DCEL.Edge from <50, 250> to <20, 175> from the tree
start DCEL.Edge from <105, 195> to <75, 180>
insert size 2
Insert DCEL.Edge from <105, 195> to <75, 180> from the tree
merge DCEL.Edge from <75, 180> to <50, 250>
Remove DCEL.Edge from <105, 195> to <75, 180> from the tree
Size : 1
regular DCEL.Edge from <20, 175> to <40, 145>
new diag from <20, 175> to <75, 180>
Remove DCEL.Edge from <50, 250> to <20, 175> from the tree
Size : 0
insert size 1
Insert DCEL.Edge from <20, 175> to <40, 145> from the tree
*************************************************8
Now I try to run it in python 2.5 again , now it returns a different result .
python driver.py
rendering original subdivision
start DCEL.Edge from <50, 250> to <20, 175>***************WHAT NOW IT IS START
VERTEX ARGGH !!!
insert size 1
Insert DCEL.Edge from <50, 250> to <20, 175> from the tree
start DCEL.Edge from <105, 195> to <75, 180>
insert size 2
Insert DCEL.Edge from <105, 195> to <75, 180> from the tree
** Affects: ubuntu
Importance: Undecided
Status: New
--
python inconsistent compiling really it is broken
https://bugs.launchpad.net/bugs/159894
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