On 18 November 2005 14:42, Joel Reymont wrote:
On Nov 18, 2005, at 1:55 PM, Simon Marlow wrote:
You can get debugging output by compiling your program with -debug, and then running it with some of the -D<something> options (use +RTS -? for a list, +RTS -Ds is a good one to start with).
I'm still working on a repro case but here's what I get...
+RTS -Ds ... scheduler: checking for threads blocked on I/O sched: -->> running thread 1103 ThreadRunGHC ... sched: --<< thread 1103 (ThreadRunGHC) stopped: is blocked on an MVar all threads: thread 1225 @ 0x1539000 is not blocked thread 1224 @ 0x1506aa4 is not blocked thread 1223 @ 0x15066a4 is not blocked ... scheduler: checking for threads blocked on I/O sched: -->> running thread 1107 ThreadRunGHC ... Segmentation fault
1107 is not blocked in the list of all threads. What options should I try next?
That doesn't tell us much unfortunately. Can you send a disassembly of the block in which the crash happened? Is it always the same block, BTW? Does changing the heap size (+RTS -H<size>) have any effect? Cheers, Simon