David Brown wrote:
I'm developing a program with GHC-6.6. I've been on amd64, and haven't had problems, but now when I run the program on on x86 (after cleaning and recompiling), I'm getting a segfault.
gdb isn't very helpful at all: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1212873040 (LWP 26946)] 0x080b45b8 in s2EI_info () (gdb) bt #0 0x080b45b8 in s2EI_info () #1 0x081757a8 in ?? () #2 0x00000004 in ?? () #3 0xb7875278 in ?? ()
I am using some various bindings to some C libraries, some I have written and some written by others. But, I'm not able to figure out where to even begin looking for the problem.
Any advice on how I might be able to better debug this? Would compiling unregistered help (I'll have to figure out how to build libraries for that)?
Fortunately I wrote a wiki page on just this subject, mainly so that I can say RTFM :-) After reading the FM, if you're still having difficulties then post a followup and we'll try to help if we can. http://hackage.haskell.org/trac/ghc/wiki/DebuggingGhcCrashes Cheers, Simon