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author | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-05-01 04:41:10 +0000 |
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committer | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-05-01 04:41:10 +0000 |
commit | 496ddbc275049fbfe2ab1e320903dab0beec0fd3 (patch) | |
tree | 831422bcb7974e41780745c3b2f9ab6ac5459c46 /thread.c | |
parent | 766ee6e55077a9cb2fd1f3092a95b5ded795161f (diff) | |
download | ruby-496ddbc275049fbfe2ab1e320903dab0beec0fd3.tar.gz |
LIST_HEAD as a local variable is a C99ism.
Address of a variable whose storage duration is `auto` is _not_ a
compile time constant, according to ISO 9899 section 6.4.
LIST_HEAD takes such thing. You can't use it to declare local
variables.
Interestingly, address of a static variable _is_ a compile time
constant. So a declaration like `static LIST_HEAD..` is
completely legal even in C90.
In C99 and newer, this is not a constraint violation.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63312 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'thread.c')
-rw-r--r-- | thread.c | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -2288,7 +2288,8 @@ rb_notify_fd_close(int fd, struct list_head *busy) void rb_thread_fd_close(int fd) { - LIST_HEAD(busy); + struct list_head busy; + busy.n.next = busy.n.prev = &busy.n; if (rb_notify_fd_close(fd, &busy)) { do rb_thread_schedule(); while (!list_empty(&busy)); |