Re: Building on android - compiled program segfaults

13 Jan 2013

      Mmh, that does not seem to work.

(gdb) strace
warning: Couldn't determine the static tracepoint marker to probe
Static tracepoint 1 at 0x3f0588

On 01/13/2013 12:56 PM, Conrad Parker wrote:
...
On 11 January 2013 19:36, Nathan Hüsken  wrote:
...
Hi,
I was succesfull in building ghc (pulled from git) to compile for
arm-linux-androideabi!
Now using "inplace/bin/ghc-stage1 -dcore-lint -debug" I compiler this
Main.hs:
main = putStrLn "Hello, World"
I get an executable, which I can run on my android device. Unfortantly
it segfaults.
Running it with ./Main +RTS -DS gives:
cap 0: initialised
Now I am trying to debug this in gdb. When I try to display the stack
(which should be in r13 on arm of I understand correctly, I get);
(gdb) p8 $r13
0xbef00a74:     0x0
0xbef00a70:     0x0
0xbef00a6c:     0x3c2e74
0xbef00a68:     0x530350
0xbef00a64:     0x0
0xbef00a60:     0x0
0xbef00a5c:     0x0
0xbef00a58:     0x0
And now I am clueless. So I tried the good old printf debugging in the
rts. Using this, I see that it gets before the call to
scheduleWaitThread in the function rts_evalLazyIO (in RtsAPI.c).
But when I put a printf in the beginning of scheduleWaitThread (in
Schedule.c) it is not shown.
What else can I do to find out more?
can you strace it?
Conrad.