There is a segmentation fault with wx3.1.2, see ticket 773
Problem reproduced with gcc 4.9.2 on Windows 7 64 bits. (C::B compiled in 32 or 64 bits)
Does not happen with wxWidgets 3.1.1 (same C::B svn version 11520 !).
Apparently some incompatibilities (or bug) within Code Completion (With wxWidgets 3.1.2, no problems if code completion is disabled !)
So, I'll stay with 3.1.1 version.
gd_on