Mysterious crash in patchlistaux() / getjump()

[David Given <dg@...>]

I'm porting Lua 5.1.3 to an embedded device. I'm seeing a rather odd
problem where it's crashing during script compilation. I've tracked this
down to patchlistaux(), where it's backpatching a jump list; at some
point in the list, it reads a program counter that's gibberish, and then
it falls over.

A brief trawl of the archives shows that Rob Kendrick had *precisely the
same problem* a little while back. Was this ever resolved, and if so, how?

FWIW the program counter I'm getting is 0x80040010, which is a little
too regular to be coincidence...

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