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-rw-r--r--main/streams/plain_wrapper.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/main/streams/plain_wrapper.c b/main/streams/plain_wrapper.c
index 6acb5edc86..83e0e74165 100644
--- a/main/streams/plain_wrapper.c
+++ b/main/streams/plain_wrapper.c
@@ -540,7 +540,7 @@ static int php_stdiop_set_option(php_stream *stream, int option, int value, void
flags = fcntl(fd, F_GETFL, 0);
oldval = (flags & O_NONBLOCK) ? 0 : 1;
if (value)
- flags ^= O_NONBLOCK;
+ flags &= ~O_NONBLOCK;
else
flags |= O_NONBLOCK;