version 1.0 memory leak

[goodeb]

The attached code triggers a memory leak in firmware version 1.0 by re-instancing PicoVector in each loop. Manually running garbage collection doesn’t help. A summary of the output is below.

At count 1
percent memory free: 93.4622
after collect percent memory free: 93.4997
At count 2
percent memory free: 92.795584
after collect percent memory free: 92.81434
...
At count 136
percent memory free: 0.95678576
after collect percent memory free: 0.9755385
At count 137
percent memory free: 0.27142158
after collect percent memory free: 0.29017434

After this the Presto freezes while still displaying 136 . You can workaround this bug by taking the line vector = PicoVector(display) out of the loop, but the same code runs fine under firmware version 0.1 with the following output. It continues to run under 0.1 even without the gc.collect()

At count 1
percent memory free: 93.51263
after collect percent memory free: 94.22905
At count 2
percent memory free: 93.53123
after collect percent memory free: 94.22905
At count 3
percent memory free: 93.53123
after collect percent memory free: 94.22905
...

reproduce_bug.py