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thread.c: use ASSUME only on gcc 5 or later

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* thread.c (rb_fd_no_init): on gcc 4, ASSUME macro affects
  something too much.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57622 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-02-13 15:19:12 +00:00
parent c9929d9f8c
commit b1c61c6e18
1 changed files with 2 additions and 2 deletions
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4
thread.c
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@ -3573,7 +3573,7 @@ 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__ >= 4
#if defined __GNUC__ && __GNUC__ >= 5
# define rb_fd_no_init(fds) ASSUME(!(fds)->fdset && !(fds)->maxfd)
#endif
@ -3640,7 +3640,7 @@ rb_fd_set(int fd, rb_fdset_t *set)
#define FD_CLR(i, f) rb_fd_clr((i), (f))
#define FD_ISSET(i, f) rb_fd_isset((i), (f))
#if defined __GNUC__ && __GNUC__ >= 4
#if defined __GNUC__ && __GNUC__ >= 5
# define rb_fd_no_init(fds) ASSUME(!(fds)->fdset)
#endif