Make the source tree sparse clean.

With this commit, the tree compiles clean with sparse commit 87f4a7fda3d
"Teach 'already_tokenized()' to use the stream name hash table" with patch
"evaluate: Allow sizeof(_Bool) to succeed" available at
http://permalink.gmane.org/gmane.comp.parsers.sparse/2461 applied, as long
as the "include/sparse" directory is included for use by sparse (only),
e.g.:
     make CC="CHECK='sparse -I../include/sparse' cgcc"

include/automake.mk

@@ -1,3 +1,4 @@
 include include/linux/automake.mk
 include include/openflow/automake.mk
 include include/openvswitch/automake.mk
+include include/sparse/automake.mk

include/sparse/arpa/inet.h

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2011 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __CHECKER__
+#error "Use this header only with sparse.  It is not a correct implementation."
+#endif
+
+#include <netinet/in.h>

include/sparse/assert.h

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2011 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __CHECKER__
+#error "Use this header only with sparse.  It is not a correct implementation."
+#endif
+
+extern void __ovs_assert(_Bool);
+#define assert(EXPRESSION) __ovs_assert(EXPRESSION)

include/sparse/automake.mk

@@ -0,0 +1,8 @@
+noinst_HEADERS += \
+        include/sparse/arpa/inet.h \
+        include/sparse/assert.h \
+        include/sparse/math.h \
+        include/sparse/netinet/in.h \
+        include/sparse/netinet/ip6.h \
+        include/sparse/sys/socket.h \
+        include/sparse/sys/wait.h

include/sparse/math.h

@@ -0,0 +1,203 @@
+/*
+ * Copyright (c) 2011 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __CHECKER__
+#error "Use this header only with sparse.  It is not a correct implementation."
+#endif
+
+#ifndef __SYS_MATH_SPARSE
+#define __SYS_MATH_SPARSE 1
+
+double acos(double);
+float acosf(float);
+double acosh(double);
+float acoshf(float);
+long double acoshl(long double);
+long double acosl(long double);
+double asin(double);
+float asinf(float);
+double asinh(double);
+float asinhf(float);
+long double asinhl(long double);
+long double asinl(long double);
+double atan(double);
+double atan2(double, double);
+float atan2f(float, float);
+long double atan2l(long double, long double);
+float atanf(float);
+double atanh(double);
+float atanhf(float);
+long double atanhl(long double);
+long double atanl(long double);
+double cbrt(double);
+float cbrtf(float);
+long double cbrtl(long double);
+double ceil(double);
+float ceilf(float);
+long double ceill(long double);
+double copysign(double, double);
+float copysignf(float, float);
+long double copysignl(long double, long double);
+double cos(double);
+float cosf(float);
+double cosh(double);
+float coshf(float);
+long double coshl(long double);
+long double cosl(long double);
+double erf(double);
+double erfc(double);
+float erfcf(float);
+long double erfcl(long double);
+float erff(float);
+long double erfl(long double);
+double exp(double);
+double exp2(double);
+float exp2f(float);
+long double exp2l(long double);
+float expf(float);
+long double expl(long double);
+double expm1(double);
+float expm1f(float);
+long double expm1l(long double);
+double fabs(double);
+float fabsf(float);
+long double fabsl(long double);
+double fdim(double, double);
+float fdimf(float, float);
+long double fdiml(long double, long double);
+double floor(double);
+float floorf(float);
+long double floorl(long double);
+double fma(double, double, double);
+float fmaf(float, float, float);
+long double fmal(long double, long double, long double);
+double fmax(double, double);
+float fmaxf(float, float);
+long double fmaxl(long double, long double);
+double fmin(double, double);
+float fminf(float, float);
+long double fminl(long double, long double);
+double fmod(double, double);
+float fmodf(float, float);
+long double fmodl(long double, long double);
+double frexp(double, int *);
+float frexpf(float value, int *);
+long double frexpl(long double value, int *);
+double hypot(double, double);
+float hypotf(float, float);
+long double hypotl(long double, long double);
+int ilogb(double);
+int ilogbf(float);
+int ilogbl(long double);
+double j0(double);
+double j1(double);
+double jn(int, double);
+double ldexp(double, int);
+float ldexpf(float, int);
+long double ldexpl(long double, int);
+double lgamma(double);
+float lgammaf(float);
+long double lgammal(long double);
+long long llrint(double);
+long long llrintf(float);
+long long llrintl(long double);
+long long llround(double);
+long long llroundf(float);
+long long llroundl(long double);
+double log(double);
+double log10(double);
+float log10f(float);
+long double log10l(long double);
+double log1p(double);
+float log1pf(float);
+long double log1pl(long double);
+double log2(double);
+float log2f(float);
+long double log2l(long double);
+double logb(double);
+float logbf(float);
+long double logbl(long double);
+float logf(float);
+long double logl(long double);
+long lrint(double);
+long lrintf(float);
+long lrintl(long double);
+long lround(double);
+long lroundf(float);
+long lroundl(long double);
+double modf(double, double *);
+float modff(float, float *);
+long double modfl(long double, long double *);
+double nan(const char *);
+float nanf(const char *);
+long double nanl(const char *);
+double nearbyint(double);
+float nearbyintf(float);
+long double nearbyintl(long double);
+double nextafter(double, double);
+float nextafterf(float, float);
+long double nextafterl(long double, long double);
+double nexttoward(double, long double);
+float nexttowardf(float, long double);
+long double nexttowardl(long double, long double);
+double pow(double, double);
+float powf(float, float);
+long double powl(long double, long double);
+double remainder(double, double);
+float remainderf(float, float);
+long double remainderl(long double, long double);
+double remquo(double, double, int *);
+float remquof(float, float, int *);
+long double remquol(long double, long double, int *);
+double rint(double);
+float rintf(float);
+long double rintl(long double);
+double round(double);
+float roundf(float);
+long double roundl(long double);
+double scalb(double, double);
+double scalbln(double, long);
+float scalblnf(float, long);
+long double scalblnl(long double, long);
+double scalbn(double, int);
+float scalbnf(float, int);
+long double scalbnl(long double, int);
+double sin(double);
+float sinf(float);
+double sinh(double);
+float sinhf(float);
+long double sinhl(long double);
+long double sinl(long double);
+double sqrt(double);
+float sqrtf(float);
+long double sqrtl(long double);
+double tan(double);
+float tanf(float);
+double tanh(double);
+float tanhf(float);
+long double tanhl(long double);
+long double tanl(long double);
+double tgamma(double);
+float tgammaf(float);
+long double tgammal(long double);
+double trunc(double);
+float truncf(float);
+long double truncl(long double);
+double y0(double);
+double y1(double);
+double yn(int, double);
+
+#endif /* <sys/math.h> for sparse */

include/sparse/netinet/in.h

@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2011 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __CHECKER__
+#error "Use this header only with sparse.  It is not a correct implementation."
+#endif
+
+#ifndef __NETINET_IN_SPARSE
+#define __NETINET_IN_SPARSE 1
+
+#include "openvswitch/types.h"
+#include <inttypes.h>
+#include <sys/socket.h>
+
+typedef ovs_be16 in_port_t;
+typedef ovs_be32 in_addr_t;
+
+struct in_addr {
+    in_addr_t s_addr;
+};
+
+struct sockaddr_in {
+    sa_family_t sin_family;
+    in_port_t sin_port;
+    struct in_addr sin_addr;
+};
+
+struct in6_addr {
+    union {
+        uint8_t u_s6_addr[16];
+    } u;
+};
+
+#define s6_addr u.u_s6_addr
+
+extern const struct in6_addr in6addr_any;
+
+#define IPPROTO_IP 0
+#define IPPROTO_HOPOPTS 0
+#define IPPROTO_ICMP 1
+#define IPPROTO_TCP 6
+#define IPPROTO_UDP 17
+#define IPPROTO_ROUTING 43
+#define IPPROTO_FRAGMENT 44
+#define IPPROTO_AH 51
+#define IPPROTO_ICMPV6 58
+#define IPPROTO_NONE 59
+#define IPPROTO_DSTOPTS 60
+
+#define INADDR_ANY              0x00000000
+#define INADDR_BROADCAST        0xffffffff
+#define INADDR_NONE             0xffffffff
+
+#define INET6_ADDRSTRLEN 46
+
+static inline ovs_be32 htonl(uint32_t x)
+{
+    return (OVS_FORCE ovs_be32) x;
+}
+
+static inline ovs_be16 htons(uint16_t x)
+{
+    return (OVS_FORCE ovs_be16) x;
+}
+
+static inline uint32_t ntohl(ovs_be32 x)
+{
+    return (OVS_FORCE uint32_t) x;
+}
+
+static inline uint16_t ntohs(ovs_be16 x)
+{
+    return (OVS_FORCE uint16_t) x;
+}
+
+in_addr_t inet_addr(const char *);
+int inet_aton (const char *, struct in_addr *);
+char *inet_ntoa(struct in_addr);
+const char *inet_ntop(int, const void *, char *, socklen_t);
+int inet_pton(int, const char *, void *);
+
+#endif /* <netinet/in.h> sparse */

include/sparse/netinet/ip6.h

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2011 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __CHECKER__
+#error "Use this header only with sparse.  It is not a correct implementation."
+#endif
+
+#ifndef __NETINET_IP6_SPARSE
+#define __NETINET_IP6_SPARSE 1
+
+#include <netinet/in.h>
+
+struct ip6_hdr {
+    union {
+        struct ip6_hdrctl {
+            ovs_be32 ip6_un1_flow;
+            ovs_be16 ip6_un1_plen;
+            uint8_t ip6_un1_nxt;
+            uint8_t ip6_un1_hlim;
+        } ip6_un1;
+        uint8_t ip6_un2_vfc;
+    } ip6_ctlun;
+    struct in6_addr ip6_src;
+    struct in6_addr ip6_dst;
+};
+
+#define ip6_vfc   ip6_ctlun.ip6_un2_vfc
+#define ip6_flow  ip6_ctlun.ip6_un1.ip6_un1_flow
+#define ip6_plen  ip6_ctlun.ip6_un1.ip6_un1_plen
+#define ip6_nxt   ip6_ctlun.ip6_un1.ip6_un1_nxt
+#define ip6_hlim  ip6_ctlun.ip6_un1.ip6_un1_hlim
+#define ip6_hops  ip6_ctlun.ip6_un1.ip6_un1_hlim
+
+struct ip6_ext {
+    uint8_t ip6e_nxt;
+    uint8_t ip6e_len;
+};
+
+struct ip6_frag {
+    uint8_t ip6f_nxt;
+    uint8_t ip6f_reserved;
+    ovs_be16 ip6f_offlg;
+    ovs_be32 ip6f_ident;
+};
+
+#define IP6F_OFF_MASK ((OVS_FORCE ovs_be16) 0xfff8)
+
+#endif /* netinet/ip6.h sparse */

include/sparse/sys/socket.h

@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2011 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __CHECKER__
+#error "Use this header only with sparse.  It is not a correct implementation."
+#endif
+
+#ifndef __SYS_SOCKET_SPARSE
+#define __SYS_SOCKET_SPARSE 1
+
+#include "openvswitch/types.h"
+#include <sys/uio.h>
+
+typedef unsigned short int sa_family_t;
+typedef __socklen_t socklen_t;
+
+struct sockaddr {
+    sa_family_t sa_family;
+    char sa_data[64];
+};
+
+struct sockaddr_storage {
+    sa_family_t ss_family;
+    char sa_data[64];
+};
+
+struct msghdr {
+    void *msg_name;
+    socklen_t      msg_namelen;
+    struct iovec  *msg_iov;
+    int            msg_iovlen;
+    void          *msg_control;
+    socklen_t      msg_controllen;
+    int            msg_flags;
+};
+
+enum {
+    SOCK_DGRAM,
+    SOCK_RAW,
+    SOCK_SEQPACKET,
+    SOCK_STREAM
+};
+
+enum {
+    SOL_SOCKET
+};
+
+enum {
+    SO_ACCEPTCONN,
+    SO_BROADCAST,
+    SO_DEBUG,
+    SO_DONTROUTE,
+    SO_ERROR,
+    SO_KEEPALIVE,
+    SO_LINGER,
+    SO_OOBINLINE,
+    SO_RCVBUF,
+    SO_RCVLOWAT,
+    SO_RCVTIMEO,
+    SO_REUSEADDR,
+    SO_SNDBUF,
+    SO_SNDLOWAT,
+    SO_SNDTIMEO,
+    SO_TYPE
+};
+
+enum {
+    MSG_CTRUNC,
+    MSG_DONTROUTE,
+    MSG_EOR,
+    MSG_OOB,
+    MSG_NOSIGNAL,
+    MSG_PEEK,
+    MSG_TRUNC,
+    MSG_WAITALL,
+    MSG_DONTWAIT
+};
+
+enum {
+    AF_UNSPEC,
+    PF_UNSPEC = AF_UNSPEC,
+    AF_INET,
+    PF_INET = AF_INET,
+    AF_INET6,
+    PF_INET6 = AF_INET6,
+    AF_UNIX,
+    PF_UNIX = AF_UNIX,
+    AF_NETLINK,
+    PF_NETLINK = AF_NETLINK,
+    AF_PACKET,
+    PF_PACKET = AF_PACKET
+};
+
+enum {
+    SHUT_RD,
+    SHUT_RDWR,
+    SHUT_WR
+};
+
+int accept(int, struct sockaddr *, socklen_t *);
+int bind(int, const struct sockaddr *, socklen_t);
+int connect(int, const struct sockaddr *, socklen_t);
+int getpeername(int, struct sockaddr *, socklen_t *);
+int getsockname(int, struct sockaddr *, socklen_t *);
+int getsockopt(int, int, int, void *, socklen_t *);
+int listen(int, int);
+ssize_t recv(int, void *, size_t, int);
+ssize_t recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *);
+ssize_t recvmsg(int, struct msghdr *, int);
+ssize_t send(int, const void *, size_t, int);
+ssize_t sendmsg(int, const struct msghdr *, int);
+ssize_t sendto(int, const void *, size_t, int, const struct sockaddr *,
+               socklen_t);
+int setsockopt(int, int, int, const void *, socklen_t);
+int shutdown(int, int);
+int sockatmark(int);
+int socket(int, int, int);
+int socketpair(int, int, int, int[2]);
+
+#endif /* <sys/socket.h> for sparse */

include/sparse/sys/wait.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2011 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __CHECKER__
+#error "Use this header only with sparse.  It is not a correct implementation."
+#endif
+
+#ifndef __SYS_WAIT_SPARSE
+#define __SYS_WAIT_SPARSE 1
+
+#include_next <sys/wait.h>
+
+#undef wait
+#define wait(a) rpl_wait(a)
+pid_t rpl_wait(int *);
+
+#undef waitpid
+#define waitpid(a, b, c) rpl_waitpid(a, b, c)
+pid_t rpl_waitpid(pid_t, int *, int);
+
+#endif /* <sys/wait.h> for sparse */

lib/byte-order.h

@@ -21,6 +21,7 @@
 #include <inttypes.h>
 #include "openvswitch/types.h"
 
+#ifndef __CHECKER__
 static inline ovs_be64
 htonll(uint64_t n)
 {
@@ -32,14 +33,21 @@ ntohll(ovs_be64 n)
 {
     return htonl(1) == 1 ? n : ((uint64_t) ntohl(n) << 32) | ntohl(n >> 32);
 }
+#else
+/* Making sparse happy with these functions also makes them unreadable, so
+ * don't bother to show it their implementations. */
+ovs_be64 htonll(uint64_t);
+uint64_t ntohll(ovs_be64);
+#endif
 
 /* These macros may substitute for htons(), htonl(), and htonll() in contexts
  * where function calls are not allowed, such as case labels.  They should not
  * be used elsewhere because all of them evaluate their argument many times. */
-#ifdef WORDS_BIGENDIAN
+#if defined(WORDS_BIGENDIAN) || __CHECKER__
-#define CONSTANT_HTONS(VALUE) ((ovs_be16) (VALUE))
+#define CONSTANT_HTONS(VALUE) ((OVS_FORCE ovs_be16) ((VALUE) & 0xffff))
-#define CONSTANT_HTONL(VALUE) ((ovs_be32) (VALUE))
+#define CONSTANT_HTONL(VALUE) ((OVS_FORCE ovs_be32) ((VALUE) & 0xffffffff))
-#define CONSTANT_HTONLL(VALUE) ((ovs_be64) (VALUE))
+#define CONSTANT_HTONLL(VALUE) \
+        ((OVS_FORCE ovs_be64) ((VALUE) & UINT64_C(0xffffffffffffffff)))
 #else
 #define CONSTANT_HTONS(VALUE)                       \
         (((((ovs_be16) (VALUE)) & 0xff00) >> 8) |   \

lib/csum.c

@@ -18,6 +18,8 @@
 #include "csum.h"
 #include "unaligned.h"
 
+#ifndef __CHECKER__
+
 /* Returns the IP checksum of the 'n' bytes in 'data'.
  *
  * The return value has the same endianness as the data.  That is, if 'data'
@@ -109,3 +111,8 @@ recalc_csum32(ovs_be16 old_csum, ovs_be32 old_u32, ovs_be32 new_u32)
     return recalc_csum16(recalc_csum16(old_csum, old_u32, new_u32),
                          old_u32 >> 16, new_u32 >> 16);
 }
+
+#else  /* __CHECKER__ */
+/* Making sparse happy with these functions also makes them unreadable, so
+ * don't bother to show it their implementations. */
+#endif

lib/netdev-linux.c

@@ -673,7 +673,8 @@ netdev_linux_open(struct netdev_dev *netdev_dev_, int ethertype,
         protocol = (ethertype == NETDEV_ETH_TYPE_ANY ? ETH_P_ALL
                     : ethertype == NETDEV_ETH_TYPE_802_2 ? ETH_P_802_2
                     : ethertype);
-        netdev->fd = socket(PF_PACKET, SOCK_RAW, htons(protocol));
+        netdev->fd = socket(PF_PACKET, SOCK_RAW,
+                            (OVS_FORCE int) htons(protocol));
         if (netdev->fd < 0) {
             error = errno;
             goto error;

lib/sflow_receiver.c

@@ -1,6 +1,8 @@
 /* Copyright (c) 2002-2009 InMon Corp. Licensed under the terms of the InMon sFlow licence: */
 /* http://www.inmon.com/technology/sflowlicense.txt */
 
+#ifndef __CHECKER__            /* Don't run sparse on anything in this file. */
+
 #include <assert.h>
 #include "sflow_api.h"
 
@@ -830,3 +832,5 @@ static void sflError(SFLReceiver *receiver, char *msg)
     sfl_agent_error(receiver->agent, "receiver", msg);
     resetSampleCollector(receiver);
 }
+
+#endif  /* !__CHECKER__ */

lib/unaligned.h

@@ -156,6 +156,7 @@ put_32aligned_u64(ovs_32aligned_u64 *x, uint64_t value)
 	x->lo = value;
 }
 
+#ifndef __CHECKER__
 /* Returns the value of 'x'. */
 static inline ovs_be64
 get_32aligned_be64(const ovs_32aligned_be64 *x)
@@ -179,5 +180,11 @@ put_32aligned_be64(ovs_32aligned_be64 *x, ovs_be64 value)
     x->lo = value >> 32;
 #endif
 }
+#else  /* __CHECKER__ */
+/* Making sparse happy with these functions also makes them unreadable, so
+ * don't bother to show it their implementations. */
+ovs_be64 get_32aligned_be64(const ovs_32aligned_be64 *);
+void put_32aligned_be64(ovs_32aligned_be64 *, ovs_be64);
+#endif
 
 #endif /* unaligned.h */

ofproto/ofproto-sflow.c

@@ -252,7 +252,7 @@ sflow_choose_agent_address(const char *agent_device, const char *control_ip,
     return false;
 
 success:
-    agent_addr->address.ip_v4.addr = in4.s_addr;
+    agent_addr->address.ip_v4.addr = (OVS_FORCE uint32_t) in4.s_addr;
     return true;
 }
 

tests/test-byte-order.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010 Nicira Networks.
+ * Copyright (c) 2010, 2011 Nicira Networks.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,6 +22,7 @@
 int
 main(void)
 {
+#ifndef __CHECKER__
     /* I picked some random numbers. */
     const uint16_t s = 0xc9bd;
     const uint32_t l = 0xffe56ae8;
@@ -44,6 +45,9 @@ main(void)
     assert(ntohll(htonll(ll)) == ll);
     assert(CONSTANT_HTONLL(ntohll(ll)) == ll);
     assert(ntohll(CONSTANT_HTONLL(ll)));
+#else  /* __CHECKER__ */
+/* Making sparse happy with this code makes it unreadable, so don't bother. */
+#endif
 
     return 0;
 }