libbfd and/or libopcodes not reentrant

[Jonas Maebe]

Hello,

Under "general BFD programming guidelines" in 
"binutils/bfd/bfdint.texi", it is stated that the goal is to make sure 
libbfd is fully reentrant. It is nowhere stated that isn't currently the 
case, but it definitely isn't (or libopcodes isn't). On a 
multi-processor machine, the attached program will reliably crash with a 
segfault or get stuck in andless loop (on single processor machines it 
also crashes sometimes, but it's much harder to reproduce then). I'm 
using libbfd and libopcodes from binutils-2.11.94 and libpthread-0.9 
(the former 2 statically linked, the latter dynamically) on a Linux i386 
machine with kernel version 2.4.9-31 (SMP kernel).

In the program where I really use this routine, I can verify that by 
putting spinlocks round the calls to the print_ins_i386 calls, the 
segfaults disappear.

If you need any more info, please let me know.

Thanks,


Jonas

PS: I compile the attached program with "gcc -o info info.c 
../../binutils-2.11.94/bfd/libbfd.a 
../../binutils-2.11.94/opcodes/libopcodes.a -lpthread"

info.c
Description: Text document