code size problem cause system crash

[Jian Peng]

HI, all:

There is a strange bug in my system. if I compile a single file with a
library, download and test it, it works fine. If I compile hundreds file
swith the same library, download it and found out it will generate some
exception in run time. Those exception is generated inside a ISR. Please
give me some hint how to debug and solve this kind of bug.

Jian