Update libc crate to 0.2.46

This change updates the libc crate to version 0.2.46.

Import subrepo libc/:libc at a9e3cc6c1b529eaffef5b82934d0c47203edebe5

1 files changed, 9 insertions, 1 deletions

diff --git a/libc/libc-test/build.rs b/libc/libc-test/build.rs
index 460eb72..ffab452 100644
--- a/libc/libc-test/build.rs
+++ b/libc/libc-test/build.rs
@@ -76,6 +76,7 @@ fn main() {
         cfg.header("windows.h");
         cfg.header("process.h");
         cfg.header("ws2ipdef.h");
+        cfg.header("signal.h");
 
         if target.contains("gnu") {
             cfg.header("ws2tcpip.h");
@@ -372,7 +373,9 @@ fn main() {
             // Fixup a few types on windows that don't actually exist.
             "time64_t" if windows => "__time64_t".to_string(),
             "ssize_t" if windows => "SSIZE_T".to_string(),
-
+            // windows 
+            "sighandler_t" if windows && !mingw => "_crt_signal_t".to_string(),
+            "sighandler_t" if windows && mingw => "__p_sig_fn_t".to_string(),
             // OSX calls this something else
             "sighandler_t" if bsdlike => "sig_t".to_string(),
 
@@ -507,6 +510,7 @@ fn main() {
             n if n.starts_with("P") => true,
             n if n.starts_with("H") => true,
             n if n.starts_with("LP") => true,
+            "__p_sig_fn_t" if mingw => true,
             _ => false,
         }
     });
@@ -652,6 +656,10 @@ fn main() {
             "BOTHER" => true,
 
             "MFD_CLOEXEC" | "MFD_ALLOW_SEALING" if !mips && musl => true,
+            // MFD_HUGETLB is not available in some older libc versions on the CI builders. On the
+            // x86_64 and i686 builders it seems to be available for all targets, so at least test
+            // it there.
+            "MFD_HUGETLB" if !(x86_64 || i686) || musl => true,
 
             "DT_FIFO" | "DT_CHR" | "DT_DIR" | "DT_BLK" | "DT_REG"
             | "DT_LNK" | "DT_SOCK"