On 02 December 2005 14:03, Joel Reymont wrote: > You told me a bit about how to examine the Haskell stack by looking > at R22 on the PowerPC and $ebx on Intel architectures. I looked at > your .gdbinit but could not figure out which macros are to be used. > > The example below is a bit contrived in that I'm freeing the SSL > context twice, on purpose. I tried getting a disassembler dump using > the contents of R22 without luck: > > (gdb) info registers r22 > r22 0x137a3cc 20423628 > (gdb) disas 0x137a3cc > No function contains specified address. > > This is my stack trace: > > Program received signal EXC_BAD_ACCESS, Could not access memory. > Reason: KERN_PROTECTION_FAILURE at address: 0x00000019 > 0x00568fe0 in sk_pop_free () > (gdb) where > #0 0x00568fe0 in sk_pop_free () > #1 0x0059f128 in X509_VERIFY_PARAM_free () > #2 0x003c4d5c in SSL_free () > #3 0x000c3254 in r7cH_info () > #4 0x000ccd04 in schedule (mainThread=0x13f3f18, > initialCapability=0x578df0) at Schedule.c:932 > #5 0x000cdcac in waitThread_ (m=0x1100360, initialCapability=0x0) at > Schedule.c:2156 > #6 0x000cdb90 in scheduleWaitThread (tso=0x13c0000, ret=0x0, > initialCapability=0x0) at Schedule.c:2050 > #7 0x0001ff0c in rts_evalLazyIO (p=0x1ce0c8, ret=0x0) at RtsAPI.c:459 > #8 0x0000495c in main (argc=25, argv=0x578df0) at Main.c:104 > (gdb) info registers r22 > r22 0x137a3cc 20423628 > (gdb) disas 0x137a3cc > No function contains specified address.
It looks like your crash happened in the SSL library, and you have a useful stack trace there. r22 is a pointer to the stack, not a pointer to code, so you can't disassemble it, you need to display memory (as I described in separate mail). Cheers, Simon _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe