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selftests/net: fix a char signedness issue
Signedness of char is signed on x86_64, but unsigned on arm64.
Fix the warning building cmsg_sender.c on signed platforms or
forced with -fsigned-char:
msg_sender.c:455:12:
error: implicit conversion from 'int' to 'char'
changes value from 128 to -128
[-Werror,-Wconstant-conversion]
buf[0] = ICMPV6_ECHO_REQUEST;
constant ICMPV6_ECHO_REQUEST is 128.
Link: https://lwn.net/Articles/911914
Fixes: de17e305a8
("selftests: net: cmsg_sender: support icmp and raw sockets")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20231124171645.1011043-3-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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1 changed files with 1 additions and 1 deletions
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@ -416,9 +416,9 @@ int main(int argc, char *argv[])
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{
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struct addrinfo hints, *ai;
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struct iovec iov[1];
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unsigned char *buf;
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struct msghdr msg;
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char cbuf[1024];
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char *buf;
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int err;
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int fd;
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