Update libc crate to 0.2.55

This change updates the libc crate to version 0.2.55.

Import subrepo libc/:libc at caf17a0641d29dc624621177f5756804dd180c13

1 files changed, 70 insertions, 0 deletions

diff --git a/libc/ci/semver.sh b/libc/ci/semver.sh
new file mode 100644
index 0000000..ac6be36
--- /dev/null
+++ b/libc/ci/semver.sh
@@ -0,0 +1,70 @@
+#!/usr/bin/env sh
+
+# Checks that libc does not contain breaking changes for the following targets.
+
+set -ex
+
+OS=${TRAVIS_OS_NAME}
+
+echo "Testing Semver on ${OS}"
+
+TARGETS=
+case "${OS}" in
+    *linux*)
+        TARGETS="\
+aarch64-fuchsia \
+aarch64-linux-android \
+aarch64-unknown-linux-gnu \
+aarch64-unknown-linux-musl \
+armv7-linux-androideabi \
+armv7-unknown-linux-gnueabihf \
+i586-unknown-linux-gnu \
+i586-unknown-linux-musl \
+i686-linux-android \
+i686-unknown-freebsd \
+i686-unknown-linux-gnu \
+i686-unknown-linux-musl \
+i686-pc-windows-gnu \
+x86_64-unknown-freebsd \
+x86_64-unknown-linux-gnu \
+x86_64-unknown-linux-musl \
+x86_64-unknown-netbsd \
+x86_64-unknown-cloudabi \
+x86_64-sun-solaris \
+x86_64-fuchsia \
+x86_64-pc-windows-gnu \
+x86_64-unknown-linux-gnux32 \
+x86_64-unknown-redox \
+x86_64-fortanix-unknown-sgx \
+wasm32-unknown-unknown \
+"
+    ;;
+    *osx*)
+        TARGETS="\
+aarch64-apple-ios \
+armv7-apple-ios \
+armv7s-apple-ios \
+i386-apple-ios \
+i686-apple-darwin \
+x86_64-apple-darwin \
+x86_64-apple-ios \
+"
+    ;;
+esac
+
+for TARGET in $TARGETS; do
+    # FIXME: rustup often fails to download some artifacts due to network
+    # issues, so we retry this N times.
+    N=5
+    n=0
+    until [ $n -ge $N ]
+    do
+        if rustup target add "${TARGET}" ; then
+            break
+        fi
+        n=$((n+1))
+        sleep 1
+    done
+
+    cargo +nightly semver --api-guidelines --target="${TARGET}"
+done