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io.c: suppress warning

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* io.c (rb_update_max_fd): get rid of unused-value warning.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53591 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2016-01-19 08:36:02 +00:00
parent 3dcdb2c3b7
commit 8a78e0f6c0
1 changed files with 4 additions and 3 deletions
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7
io.c
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@ -197,16 +197,17 @@ rb_update_max_fd(int fd)
{
struct stat buf;
rb_atomic_t afd = (rb_atomic_t)fd;
rb_atomic_t max_fd = max_file_descriptor;
if (afd <= max_file_descriptor)
if (afd <= max_fd)
return;
if (fstat(fd, &buf) != 0 && errno == EBADF) {
rb_bug("rb_update_max_fd: invalid fd (%d) given.", fd);
}
while (max_file_descriptor < afd) {
ATOMIC_CAS(max_file_descriptor, max_file_descriptor, afd);
while (max_fd < afd) {
max_fd = ATOMIC_CAS(max_file_descriptor, max_fd, afd);
}
}