diff options
Diffstat (limited to 'libc/libc-test')
-rw-r--r-- | libc/libc-test/Cargo.toml | 13 | ||||
-rw-r--r-- | libc/libc-test/build.rs | 367 |
2 files changed, 281 insertions, 99 deletions
diff --git a/libc/libc-test/Cargo.toml b/libc/libc-test/Cargo.toml index 771d3b3..b782a95 100644 --- a/libc/libc-test/Cargo.toml +++ b/libc/libc-test/Cargo.toml @@ -4,11 +4,17 @@ version = "0.1.0" authors = ["Alex Crichton <alex@alexcrichton.com>"] build = "build.rs" -[dependencies] -libc = { path = ".." } +[dependencies.libc] +path = ".." +default-features = false [build-dependencies] -ctest = { git = "https://github.com/alexcrichton/ctest" } +ctest = "0.2.8" + +[features] +default = [ "use_std" ] +use_std = [ "libc/use_std" ] +align = [ "libc/align" ] [[test]] name = "main" @@ -19,3 +25,4 @@ harness = false name = "linux-fcntl" path = "test/linux_fcntl.rs" harness = false + diff --git a/libc/libc-test/build.rs b/libc/libc-test/build.rs index 48f596f..460eb72 100644 --- a/libc/libc-test/build.rs +++ b/libc/libc-test/build.rs @@ -15,6 +15,7 @@ fn main() { let linux = target.contains("unknown-linux"); let android = target.contains("android"); let apple = target.contains("apple"); + let ios = target.contains("apple-ios"); let emscripten = target.contains("asm"); let musl = target.contains("musl") || emscripten; let uclibc = target.contains("uclibc"); @@ -25,6 +26,8 @@ fn main() { let openbsd = target.contains("openbsd"); let rumprun = target.contains("rumprun"); let solaris = target.contains("solaris"); + let cloudabi = target.contains("cloudabi"); + let redox = target.contains("redox"); let bsdlike = freebsd || apple || netbsd || openbsd || dragonfly; let mut cfg = ctest::TestGenerator::new(); @@ -33,12 +36,16 @@ fn main() { cfg.define("_GNU_SOURCE", None); } else if netbsd { cfg.define("_NETBSD_SOURCE", Some("1")); + } else if apple { + cfg.define("__APPLE_USE_RFC_3542", None); } else if windows { cfg.define("_WIN32_WINNT", Some("0x8000")); } else if solaris { cfg.define("_XOPEN_SOURCE", Some("700")); cfg.define("__EXTENSIONS__", None); cfg.define("_LCONV_C99", None); + } else if freebsd { + cfg.define("_WITH_GETLINE", None); } // Android doesn't actually have in_port_t but it's much easier if we @@ -48,17 +55,17 @@ fn main() { } cfg.header("errno.h") - .header("fcntl.h") - .header("limits.h") - .header("locale.h") - .header("stddef.h") - .header("stdint.h") - .header("stdio.h") - .header("stdlib.h") - .header("sys/stat.h") - .header("sys/types.h") - .header("time.h") - .header("wchar.h"); + .header("fcntl.h") + .header("limits.h") + .header("locale.h") + .header("stddef.h") + .header("stdint.h") + .header("stdio.h") + .header("stdlib.h") + .header("sys/stat.h") + .header("sys/types.h") + .header("time.h") + .header("wchar.h"); if windows { cfg.header("winsock2.h"); // must be before windows.h @@ -82,6 +89,10 @@ fn main() { cfg.header("sys/socket.h"); } cfg.header("net/if.h"); + if !ios { + cfg.header("net/route.h"); + cfg.header("net/if_arp.h"); + } cfg.header("netdb.h"); cfg.header("netinet/in.h"); cfg.header("netinet/ip.h"); @@ -99,6 +110,7 @@ fn main() { cfg.header("sys/socket.h"); if linux && !musl { cfg.header("linux/if.h"); + cfg.header("sys/auxv.h"); } cfg.header("sys/time.h"); cfg.header("sys/un.h"); @@ -108,7 +120,7 @@ fn main() { cfg.header("pwd.h"); cfg.header("grp.h"); cfg.header("sys/utsname.h"); - if !solaris { + if !solaris && !ios { cfg.header("sys/ptrace.h"); } cfg.header("sys/mount.h"); @@ -131,6 +143,7 @@ fn main() { cfg.header("arpa/inet.h"); cfg.header("xlocale.h"); cfg.header("utmp.h"); + cfg.header("ifaddrs.h"); if i686 || x86_64 { cfg.header("sys/reg.h"); } @@ -148,7 +161,6 @@ fn main() { } if !musl && !uclibc { - if !netbsd && !openbsd && !uclibc { cfg.header("execinfo.h"); } @@ -162,21 +174,30 @@ fn main() { } if apple { + cfg.header("spawn.h"); cfg.header("mach-o/dyld.h"); cfg.header("mach/mach_time.h"); cfg.header("malloc/malloc.h"); cfg.header("util.h"); cfg.header("xlocale.h"); cfg.header("sys/xattr.h"); - cfg.header("sys/sys_domain.h"); - cfg.header("net/if_utun.h"); - cfg.header("net/bpf.h"); - if target.starts_with("x86") { + if target.starts_with("x86") && !ios { cfg.header("crt_externs.h"); } - cfg.header("net/route.h"); - cfg.header("netinet/if_ether.h"); - cfg.header("sys/proc_info.h"); + cfg.header("netinet/in.h"); + cfg.header("sys/ipc.h"); + cfg.header("sys/sem.h"); + cfg.header("sys/shm.h"); + + if !ios { + cfg.header("sys/sys_domain.h"); + cfg.header("net/if_utun.h"); + cfg.header("net/bpf.h"); + cfg.header("net/route.h"); + cfg.header("netinet/if_ether.h"); + cfg.header("sys/proc_info.h"); + cfg.header("sys/kern_control.h"); + } } if bsdlike { @@ -237,26 +258,35 @@ fn main() { } cfg.header("sys/reboot.h"); if !emscripten { + cfg.header("linux/sockios.h"); + cfg.header("linux/netlink.h"); + cfg.header("linux/genetlink.h"); cfg.header("linux/netfilter_ipv4.h"); + cfg.header("linux/netfilter_ipv6.h"); cfg.header("linux/fs.h"); } if !musl { cfg.header("asm/mman.h"); - cfg.header("linux/netlink.h"); cfg.header("linux/magic.h"); cfg.header("linux/reboot.h"); + cfg.header("linux/netfilter/nf_tables.h"); if !mips { cfg.header("linux/quota.h"); } } } + if solaris { + cfg.header("sys/epoll.h"); + } if linux || android { cfg.header("sys/fsuid.h"); + cfg.header("linux/module.h"); cfg.header("linux/seccomp.h"); cfg.header("linux/if_ether.h"); - + cfg.header("linux/if_tun.h"); + cfg.header("linux/net_tstamp.h"); // DCCP support if !uclibc && !musl && !emscripten { cfg.header("linux/dccp.h"); @@ -271,7 +301,7 @@ fn main() { cfg.header("linux/random.h"); cfg.header("elf.h"); cfg.header("link.h"); - cfg.header("linux/if_tun.h"); + cfg.header("spawn.h"); } if freebsd { @@ -279,16 +309,21 @@ fn main() { cfg.header("pthread_np.h"); cfg.header("sched.h"); cfg.header("ufs/ufs/quota.h"); + cfg.header("sys/extattr.h"); cfg.header("sys/jail.h"); cfg.header("sys/ipc.h"); cfg.header("sys/msg.h"); cfg.header("sys/shm.h"); + cfg.header("sys/procdesc.h"); + cfg.header("sys/rtprio.h"); + cfg.header("spawn.h"); } if netbsd { cfg.header("mqueue.h"); cfg.header("ufs/ufs/quota.h"); cfg.header("ufs/ufs/quota1.h"); + cfg.header("sys/extattr.h"); cfg.header("sys/ioctl_compat.h"); // DCCP support @@ -306,6 +341,7 @@ fn main() { cfg.header("ufs/ufs/quota.h"); cfg.header("pthread_np.h"); cfg.header("sys/ioctl_compat.h"); + cfg.header("sys/rtprio.h"); } if solaris { @@ -321,15 +357,17 @@ fn main() { } } - cfg.type_name(move |ty, is_struct| { + if cloudabi || redox { + cfg.header("strings.h"); + } + + cfg.type_name(move |ty, is_struct, is_union| { match ty { // Just pass all these through, no need for a "struct" prefix - "FILE" | - "fd_set" | - "Dl_info" | - "DIR" | - "Elf32_Phdr" | - "Elf64_Phdr" => ty.to_string(), + "FILE" | "fd_set" | "Dl_info" | "DIR" | "Elf32_Phdr" + | "Elf64_Phdr" | "Elf32_Shdr" | "Elf64_Shdr" | "Elf32_Sym" + | "Elf64_Sym" | "Elf32_Ehdr" | "Elf64_Ehdr" | "Elf32_Chdr" + | "Elf64_Chdr" => ty.to_string(), // Fixup a few types on windows that don't actually exist. "time64_t" if windows => "__time64_t".to_string(), @@ -338,6 +376,8 @@ fn main() { // OSX calls this something else "sighandler_t" if bsdlike => "sig_t".to_string(), + t if is_union => format!("union {}", t), + t if t.ends_with("_t") => t.to_string(), // Windows uppercase structs don't have `struct` in front, there's a @@ -362,8 +402,12 @@ fn main() { let target2 = target.clone(); cfg.field_name(move |struct_, field| { match field { - "st_birthtime" if openbsd && struct_ == "stat" => "__st_birthtime".to_string(), - "st_birthtime_nsec" if openbsd && struct_ == "stat" => "__st_birthtimensec".to_string(), + "st_birthtime" if openbsd && struct_ == "stat" => { + "__st_birthtime".to_string() + } + "st_birthtime_nsec" if openbsd && struct_ == "stat" => { + "__st_birthtimensec".to_string() + } // Our stat *_nsec fields normally don't actually exist but are part // of a timeval struct s if s.ends_with("_nsec") && struct_.starts_with("stat") => { @@ -376,9 +420,15 @@ fn main() { } } "u64" if struct_ == "epoll_event" => "data.u64".to_string(), - "type_" if linux && - (struct_ == "input_event" || struct_ == "input_mask" || - struct_ == "ff_effect") => "type".to_string(), + "type_" + if (linux || freebsd || dragonfly) + && (struct_ == "input_event" + || struct_ == "input_mask" + || struct_ == "ff_effect" + || struct_ == "rtprio") => + { + "type".to_string() + } s => s.to_string(), } }); @@ -388,7 +438,7 @@ fn main() { // sighandler_t is crazy across platforms "sighandler_t" => true, - _ => false + _ => false, } }); @@ -401,8 +451,10 @@ fn main() { // which is absent in glibc, has to be defined. "__timeval" if linux => true, - // The alignment of this is 4 on 64-bit OSX... - "kevent" if apple && x86_64 => true, + // Fixed on feature=align with repr(packed(4)) + // Once repr_packed stabilizes we can fix this unconditionally + // and remove this check. + "kevent" | "shmid_ds" | "semid_ds" if apple && x86_64 => true, // This is actually a union, not a struct "sigval" => true, @@ -420,16 +472,26 @@ fn main() { // header conflicts when including them with all the other structs. "termios2" => true, - _ => false + // Present on historical versions of iOS but missing in more recent + // SDKs + "bpf_hdr" | "proc_taskinfo" | "proc_taskallinfo" + | "proc_bsdinfo" | "proc_threadinfo" | "sockaddr_inarp" + | "sockaddr_ctl" | "arphdr" + if ios => + { + true + } + + _ => false, } }); cfg.skip_signededness(move |c| { match c { - "LARGE_INTEGER" | - "mach_timebase_info_data_t" | - "float" | - "double" => true, + "LARGE_INTEGER" + | "mach_timebase_info_data_t" + | "float" + | "double" => true, // uuid_t is a struct, not an integer. "uuid_t" if dragonfly => true, n if n.starts_with("pthread") => true, @@ -438,6 +500,9 @@ fn main() { // mqd_t is a pointer on FreeBSD and DragonFly "mqd_t" if freebsd || dragonfly => true, + // Just some typedefs on osx, no need to check their sign + "posix_spawnattr_t" | "posix_spawn_file_actions_t" => true, + // windows-isms n if n.starts_with("P") => true, n if n.starts_with("H") => true, @@ -449,25 +514,31 @@ fn main() { cfg.skip_const(move |name| { match name { // Apparently these don't exist in mingw headers? - "MEM_RESET_UNDO" | - "FILE_ATTRIBUTE_NO_SCRUB_DATA" | - "FILE_ATTRIBUTE_INTEGRITY_STREAM" | - "ERROR_NOTHING_TO_TERMINATE" if mingw => true, + "MEM_RESET_UNDO" + | "FILE_ATTRIBUTE_NO_SCRUB_DATA" + | "FILE_ATTRIBUTE_INTEGRITY_STREAM" + | "ERROR_NOTHING_TO_TERMINATE" + if mingw => + { + true + } - "SIG_DFL" | - "SIG_ERR" | - "SIG_IGN" => true, // sighandler_t weirdness - "SIGUNUSED" => true, // removed in glibc 2.26 + "SIG_DFL" | "SIG_ERR" | "SIG_IGN" => true, // sighandler_t weirdness + "SIGUNUSED" => true, // removed in glibc 2.26 // types on musl are defined a little differently n if musl && n.contains("__SIZEOF_PTHREAD") => true, // Skip constants not defined in MUSL but just passed down to the // kernel regardless - "RLIMIT_NLIMITS" | - "TCP_COOKIE_TRANSACTIONS" | - "RLIMIT_RTTIME" | - "MSG_COPY" if musl => true, + "RLIMIT_NLIMITS" + | "TCP_COOKIE_TRANSACTIONS" + | "RLIMIT_RTTIME" + | "MSG_COPY" + if musl => + { + true + } // work around super old mips toolchain "SCHED_IDLE" | "SHM_NORESERVE" => mips, @@ -476,21 +547,32 @@ fn main() { "MS_RMT_MASK" => true, // updated in glibc 2.22 and musl 1.1.13 // These OSX constants are flagged as deprecated - "NOTE_EXIT_REPARENTED" | - "NOTE_REAP" if apple => true, + "NOTE_EXIT_REPARENTED" | "NOTE_REAP" if apple => true, // These constants were removed in FreeBSD 11 (svn r273250) but will // still be accepted and ignored at runtime. - "MAP_RENAME" | - "MAP_NORESERVE" if freebsd => true, + "MAP_RENAME" | "MAP_NORESERVE" if freebsd => true, // These constants were removed in FreeBSD 11 (svn r262489), // and they've never had any legitimate use outside of the // base system anyway. - "CTL_MAXID" | - "KERN_MAXID" | - "HW_MAXID" | - "USER_MAXID" if freebsd => true, + "CTL_MAXID" | "KERN_MAXID" | "HW_MAXID" | "NET_MAXID" + | "USER_MAXID" + if freebsd => + { + true + } + + // These constants were added in FreeBSD 11 + "EVFILT_PROCDESC" | "EVFILT_SENDFILE" | "EVFILT_EMPTY" + | "PD_CLOEXEC" | "PD_ALLOWED_AT_FORK" + if freebsd => + { + true + } + + // These constants were added in FreeBSD 12 + "SF_USER_READAHEAD" | "SO_REUSEPORT_LB" if freebsd => true, // These OSX constants are removed in Sierra. // https://developer.apple.com/library/content/releasenotes/General/APIDiffsMacOS10_12/Swift/Darwin.html @@ -499,21 +581,43 @@ fn main() { // These constants were removed in OpenBSD 6 (https://git.io/v7gBO // https://git.io/v7gBq) - "KERN_USERMOUNT" | - "KERN_ARND" if openbsd => true, - - // These constats were added in OpenBSD 6.2 - "EV_RECEIPT" | "EV_DISPATCH" if openbsd => true, + "KERN_USERMOUNT" | "KERN_ARND" if openbsd => true, // These are either unimplemented or optionally built into uClibc - "LC_CTYPE_MASK" | "LC_NUMERIC_MASK" | "LC_TIME_MASK" | "LC_COLLATE_MASK" | "LC_MONETARY_MASK" | "LC_MESSAGES_MASK" | - "MADV_MERGEABLE" | "MADV_UNMERGEABLE" | "MADV_HWPOISON" | "IPV6_ADD_MEMBERSHIP" | "IPV6_DROP_MEMBERSHIP" | "IPV6_MULTICAST_LOOP" | "IPV6_V6ONLY" | - "MAP_STACK" | "RTLD_DEEPBIND" | "SOL_IPV6" | "SOL_ICMPV6" if uclibc => true, + "LC_CTYPE_MASK" + | "LC_NUMERIC_MASK" + | "LC_TIME_MASK" + | "LC_COLLATE_MASK" + | "LC_MONETARY_MASK" + | "LC_MESSAGES_MASK" + | "MADV_MERGEABLE" + | "MADV_UNMERGEABLE" + | "MADV_HWPOISON" + | "IPV6_ADD_MEMBERSHIP" + | "IPV6_DROP_MEMBERSHIP" + | "IPV6_MULTICAST_LOOP" + | "IPV6_V6ONLY" + | "MAP_STACK" + | "RTLD_DEEPBIND" + | "SOL_IPV6" + | "SOL_ICMPV6" + if uclibc => + { + true + } // Musl uses old, patched kernel headers - "FALLOC_FL_COLLAPSE_RANGE" | "FALLOC_FL_ZERO_RANGE" | - "FALLOC_FL_INSERT_RANGE" | "FALLOC_FL_UNSHARE_RANGE" | - "RENAME_NOREPLACE" | "RENAME_EXCHANGE" | "RENAME_WHITEOUT" if musl => true, + "FALLOC_FL_COLLAPSE_RANGE" + | "FALLOC_FL_ZERO_RANGE" + | "FALLOC_FL_INSERT_RANGE" + | "FALLOC_FL_UNSHARE_RANGE" + | "RENAME_NOREPLACE" + | "RENAME_EXCHANGE" + | "RENAME_WHITEOUT" + if musl => + { + true + } // Both android and musl use old kernel headers // These are constants used in getrandom syscall @@ -521,7 +625,7 @@ fn main() { // Defined by libattr not libc on linux (hard to test). // See constant definition for more details. - "ENOATTR" if linux => true, + "ENOATTR" if android || linux => true, // On mips*-unknown-linux-gnu* CMSPAR cannot be included with the set of headers we // want to use here for testing. It's originally defined in asm/termbits.h, which is @@ -538,18 +642,67 @@ fn main() { // These constants are tested in a separate test program generated below because there // are header conflicts if we try to include the headers that define them here. "F_CANCELLK" | "F_ADD_SEALS" | "F_GET_SEALS" => true, - "F_SEAL_SEAL" | "F_SEAL_SHRINK" | "F_SEAL_GROW" | "F_SEAL_WRITE" => true, - "QFMT_VFS_OLD" | "QFMT_VFS_V0" | "QFMT_VFS_V1" if mips && linux => true, // Only on MIPS + "F_SEAL_SEAL" | "F_SEAL_SHRINK" | "F_SEAL_GROW" + | "F_SEAL_WRITE" => true, + "QFMT_VFS_OLD" | "QFMT_VFS_V0" | "QFMT_VFS_V1" + if mips && linux => + { + true + } // Only on MIPS "BOTHER" => true, "MFD_CLOEXEC" | "MFD_ALLOW_SEALING" if !mips && musl => true, - "DT_FIFO" | "DT_CHR" | "DT_DIR" | "DT_BLK" | "DT_REG" | "DT_LNK" | "DT_SOCK" if solaris => true, + "DT_FIFO" | "DT_CHR" | "DT_DIR" | "DT_BLK" | "DT_REG" + | "DT_LNK" | "DT_SOCK" + if solaris => + { + true + } "USRQUOTA" | "GRPQUOTA" if solaris => true, "PRIO_MIN" | "PRIO_MAX" if solaris => true, // These are defined for Solaris 11, but the crate is tested on illumos, where they are currently not defined - "EADI" | "PORT_SOURCE_POSTWAIT" | "PORT_SOURCE_SIGNAL" | "PTHREAD_STACK_MIN" => true, + "EADI" + | "PORT_SOURCE_POSTWAIT" + | "PORT_SOURCE_SIGNAL" + | "PTHREAD_STACK_MIN" => true, + + // These change all the time from release to release of linux + // distros, let's just not bother trying to verify them. They + // shouldn't be used in code anyway... + "AF_MAX" | "PF_MAX" => true, + + // These are not in a glibc release yet, only in kernel headers. + "AF_XDP" | "PF_XDP" | "SOL_XDP" if linux => true, + + // Present on historical versions of iOS, but now removed in more + // recent SDKs + "ARPOP_REQUEST" + | "ARPOP_REPLY" + | "ATF_COM" + | "ATF_PERM" + | "ATF_PUBL" + | "ATF_USETRAILERS" + | "AF_SYS_CONTROL" + | "SYSPROTO_EVENT" + | "PROC_PIDTASKALLINFO" + | "PROC_PIDTASKINFO" + | "PROC_PIDTHREADINFO" + | "UTUN_OPT_FLAGS" + | "UTUN_OPT_IFNAME" + | "BPF_ALIGNMENT" + | "SYSPROTO_CONTROL" + if ios => + { + true + } + s if ios && s.starts_with("RTF_") => true, + s if ios && s.starts_with("RTM_") => true, + s if ios && s.starts_with("RTA_") => true, + s if ios && s.starts_with("RTAX_") => true, + s if ios && s.starts_with("RTV_") => true, + s if ios && s.starts_with("DLT_") => true, _ => false, } @@ -636,6 +789,9 @@ fn main() { // the symbol. "uname" if freebsd => true, + // FIXME: need to upgrade FreeBSD version; see https://github.com/rust-lang/libc/issues/938 + "setgrent" if freebsd => true, + // aio_waitcomplete's return type changed between FreeBSD 10 and 11. "aio_waitcomplete" if freebsd => true, @@ -690,6 +846,18 @@ fn main() { // FIXME: mincore is defined with caddr_t on Solaris. "mincore" if solaris => true, + // These were all included in historical versions of iOS but appear + // to be removed now + "system" | "ptrace" if ios => true, + + _ => false, + } + }); + + cfg.skip_static(move |name| { + match name { + // Internal constant, not declared in any headers. + "__progname" if android => true, _ => false, } }); @@ -731,7 +899,13 @@ fn main() { // musl seems to define this as an *anonymous* bitfield (musl && struct_ == "statvfs" && field == "__f_unused") || // sigev_notify_thread_id is actually part of a sigev_un union - (struct_ == "sigevent" && field == "sigev_notify_thread_id") + (struct_ == "sigevent" && field == "sigev_notify_thread_id") || + // signalfd had SIGSYS fields added in Linux 4.18, but no libc release has them yet. + (struct_ == "signalfd_siginfo" && (field == "ssi_addr_lsb" || + field == "_pad2" || + field == "ssi_syscall" || + field == "ssi_call_addr" || + field == "ssi_arch")) }); cfg.fn_cname(move |name, cname| { @@ -749,7 +923,8 @@ fn main() { // fails on a lot of platforms. let mut cfg = ctest::TestGenerator::new(); cfg.skip_type(|_| true) - .skip_fn(|_| true); + .skip_fn(|_| true) + .skip_static(|_| true); if android || linux { // musl defines these directly in `fcntl.h` if musl { @@ -763,23 +938,23 @@ fn main() { } cfg.header("linux/quota.h"); cfg.header("asm/termbits.h"); - cfg.skip_const(move |name| { - match name { - "F_CANCELLK" | "F_ADD_SEALS" | "F_GET_SEALS" => false, - "F_SEAL_SEAL" | "F_SEAL_SHRINK" | "F_SEAL_GROW" | "F_SEAL_WRITE" => false, - "QFMT_VFS_OLD" | "QFMT_VFS_V0" | "QFMT_VFS_V1" if mips && linux => false, - "BOTHER" => false, - _ => true, + cfg.skip_const(move |name| match name { + "F_CANCELLK" | "F_ADD_SEALS" | "F_GET_SEALS" => false, + "F_SEAL_SEAL" | "F_SEAL_SHRINK" | "F_SEAL_GROW" + | "F_SEAL_WRITE" => false, + "QFMT_VFS_OLD" | "QFMT_VFS_V0" | "QFMT_VFS_V1" + if mips && linux => + { + false } + "BOTHER" => false, + _ => true, }); - cfg.skip_struct(|s| { - s != "termios2" - }); - cfg.type_name(move |ty, is_struct| { - match ty { - t if is_struct => format!("struct {}", t), - t => t.to_string(), - } + cfg.skip_struct(|s| s != "termios2"); + cfg.type_name(move |ty, is_struct, is_union| match ty { + t if is_struct => format!("struct {}", t), + t if is_union => format!("union {}", t), + t => t.to_string(), }); } else { cfg.skip_const(|_| true); |