[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 14 of 18] tools/libvchan: fix build errors caused by Werror in io.c
# HG changeset patch # User Olaf Hering <olaf@xxxxxxxxx> # Date 1333046863 -7200 # Node ID 0966600a98f1b3a4707fa3bfae24d207d424c452 # Parent bd4bb152538c54457026d3bee6f8b9dba1021b7f tools/libvchan: fix build errors caused by Werror in io.c -O2 -Wall -Werror triggers these warnings: io.c: In function 'do_send': io.c:196: warning: ignoring return value of 'writev', declared with attribute warn_unused_result io.c: In function 'do_recv': io.c:287: warning: ignoring return value of 'writev', declared with attribute warn_unused_result writev to -1 will always fail, silence the warning. Signed-off-by: Olaf Hering <olaf@xxxxxxxxx> diff -r bd4bb152538c -r 0966600a98f1 tools/libvchan/io.c --- a/tools/libvchan/io.c +++ b/tools/libvchan/io.c @@ -193,7 +193,7 @@ static int do_send(struct libxenvchan *c iov[0].iov_len = snprintf(metainfo, 32, "vchan@%p wr", ctrl); iov[1].iov_base = (void *)data; iov[1].iov_len = size; - writev(-1, iov, 2); + if (writev(-1, iov, 2)); } if (avail_contig > size) avail_contig = size; @@ -284,7 +284,7 @@ static int do_recv(struct libxenvchan *c iov[0].iov_len = snprintf(metainfo, 32, "vchan@%p rd", ctrl); iov[1].iov_base = data; iov[1].iov_len = size; - writev(-1, iov, 2); + if (writev(-1, iov, 2)); } if (send_notify(ctrl, VCHAN_NOTIFY_READ)) return -1; _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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