[gdb] Fix data race in bitfield

Data race between:
...
  Write of size 4 at 0x7b8009b483f0 by thread T2:
    #0 set_type_align(type*, unsigned long) /home/vries/gdb_versions/devel/src/gdb/gdbtypes.c:3751 (gdb+0x961e08)
...
and:
...
  Previous read of size 1 at 0x7b8009b483f1 by thread T4:
    #0 type::instance_flags() const /home/vries/gdb_versions/devel/src/gdb/gdbtypes.h:1092 (gdb+0x59e74b)
...
corresponding to:
...
  unsigned align_log2 : TYPE_ALIGN_BITS;
  unsigned m_instance_flags : 9;
...

Fix this by wrapping them using "struct { ... };".

For now, don't worry about size increase, we might have to address this later
using packed.

Still, is this a correct fix?  Maybe the problem is modifying a type from
different thread.  If so, having this patch for now may expose that problem.

0 files changed, 0 insertions, 0 deletions