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thread.c: suppress warnings only if GCC6+ 

* thread.c (rb_fd_no_init): suppress warnings by applying ASSUME
  only if GCC 6 or lator, to get rid of freeze with GCC 4.7.2-5.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51894 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-09-18 04:42:58 +00:00
parent 02bb538c3d
commit f8a2398a86
1 changed files with 2 additions and 0 deletions
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thread.c
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@ -3404,7 +3404,9 @@ rb_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds, rb_fdset_t *excep
return select(n, r, w, e, timeout);
}
#if defined __GNUC__ && __GNUC__ >= 6
#define rb_fd_no_init(fds) ASSUME(!(fds)->maxfd)
#endif
#undef FD_ZERO
#undef FD_SET