[gmx-developers] release-4-5 and 4-6 crash compiled with -DCMAKE_BUILD_TYPE:STRING=Debug. Thread code to blame?

[David van der Spoel]

I'm trying to debug some redmine issues and find myself stuck due to 
above error:

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000001
0x00000001006521b1 in tMPI_Spinlock_trylock (x=0x100d00fa0) at gcc_x86.h:244
244	    __asm__ __volatile__("\tmovl $1, %0\n"     /* set eax to 1, the 
locked
(gdb) where
#0  0x00000001006521b1 in tMPI_Spinlock_trylock (x=0x100d00fa0) at 
gcc_x86.h:244
#1  0x000000010065225f in tMPI_Lock_lock (lock=0x100d00fa0) at lock.c:69
#2  0x00000001003d1635 in gmx_fio_lock (fio=0x100d00f20) at gmxfio.c:252
#3  0x00000001003d176c in gmx_fio_insert (fio=0x100d00f20) at gmxfio.c:305
#4  0x00000001003d1fb3 in gmx_fio_open (fn=0x100d01a20 "md.log", 
mode=0x100671a8e "w+") at gmxfio.c:570
#5  0x00000001003d2273 in gmx_fio_fopen (fn=0x100d01a20 "md.log", 
mode=0x100671a8e "w+") at gmxfio.c:643
#6  0x00000001003e5bbb in gmx_log_open (lognm=0x100d00c10 "md.log", 
cr=0x100d00900, bMasterOnly=1, Flags=7168, fplog=0x7fff5fbfe4a0) at 
main.c:310
#7  0x00000001000269fe in main (argc=1, argv=0x7fff5fbff790) at mdrun.c:651

I'm on Mac OSX Lion (10.7.2)
[artemisiabmcuuse:713/spc] % gcc -h
i686-apple-darwin11-llvm-gcc-4.2: no input files

Any clues?

Will try it on Linux next.

-- 
David van der Spoel, Ph.D., Professor of Biology
Dept. of Cell & Molec. Biol., Uppsala University.
Box 596, 75124 Uppsala, Sweden. Phone:	+46184714205.
spoel at xray.bmc.uu.se    http://folding.bmc.uu.se