[ruby-cvs:72669] k0kubun:r65569 (trunk): mjit_worker.c: strictly control MJIT copy job

[k0kubun at ruby-lang.org]

k0kubun	2018-11-06 16:22:25 +0900 (Tue, 06 Nov 2018)

  New Revision: 65569

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=65569

  Log:
    mjit_worker.c: strictly control MJIT copy job
    
    -available region. reducing risk of SEGV in mjit_copy_job_handler() like
    http://ci.rvm.jp/results/trunk-mjit@silicon-docker/1446117
    
    I'm not sure which exact part is causing "[BUG] Segmentation fault at 0x0000000000000008"
    on `(mjit_copy_job_handler+0x12) [0x564a6c4ce632] /home/ko1/ruby/src/trunk-mjit/mjit.c:26`...
    
    mjit.c: ditto

  Modified files:
    trunk/mjit.c
    trunk/mjit_worker.c