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, 214 insertions, 0 deletions

diff --git a/libc/ci/build.sh b/libc/ci/build.sh
new file mode 100644
index 0000000..eb07c18
--- /dev/null
+++ b/libc/ci/build.sh
@@ -0,0 +1,214 @@
+#!/usr/bin/env sh
+
+# Checks that libc builds properly for all supported targets on a particular
+# Rust version:
+
+set -ex
+
+RUST=${TRAVIS_RUST_VERSION}
+OS=${TRAVIS_OS_NAME}
+
+echo "Testing Rust ${RUST} on ${OS}"
+
+test_target() {
+    CARGO="${1}"
+    TARGET="${2}"
+    NO_STD="${3}"
+
+    opt=
+    if [ "${TARGET}" = "x86_64-unknown-linux-gnux32" ]; then
+        # FIXME: x86_64-unknown-linux-gnux32 fail to compile without
+        # --release
+        #
+        # See https://github.com/rust-lang/rust/issues/45417
+        opt="--release"
+    fi
+
+    # If there is a std component, fetch it:
+    if [ "${NO_STD}" != "1" ]; then
+        # 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}" --toolchain "${RUST}" ; then
+                break
+            fi
+            n=$((n+1))
+            sleep 1
+        done
+    fi
+
+    # Test that libc builds without any default features (no libstd)
+    "$CARGO" "+${RUST}" build -vv $opt --no-default-features --target "${TARGET}"
+
+    # Test that libc builds with default features (e.g. libstd)
+    # if the target supports libstd
+    if [ "$NO_STD" != "1" ]; then
+        "$CARGO" "+${RUST}" build -vv $opt --target "${TARGET}"
+    fi
+
+    # Test that libc builds with the `extra_traits` feature
+    "$CARGO" "+${RUST}" build -vv $opt --no-default-features --target "${TARGET}" \
+          --features extra_traits
+
+    # Also test that it builds with `extra_traits` and default features:
+    if [ "$NO_STD" != "1" ]; then
+        "$CARGO" "+${RUST}" build -vv $opt --target "${TARGET}" \
+              --features extra_traits
+    fi
+}
+
+RUST_LINUX_TARGETS="\
+aarch64-linux-android \
+aarch64-unknown-linux-gnu \
+arm-linux-androideabi \
+arm-unknown-linux-gnueabi \
+arm-unknown-linux-gnueabihf \
+armv7-linux-androideabi \
+armv7-unknown-linux-gnueabihf \
+i586-unknown-linux-gnu \
+i686-linux-android \
+i686-unknown-freebsd \
+i686-unknown-linux-gnu \
+i686-unknown-linux-musl \
+mips-unknown-linux-gnu \
+mips-unknown-linux-musl \
+mips64-unknown-linux-gnuabi64 \
+mips64el-unknown-linux-gnuabi64 \
+mipsel-unknown-linux-gnu \
+mipsel-unknown-linux-gnu \
+mipsel-unknown-linux-musl \
+powerpc-unknown-linux-gnu \
+powerpc64-unknown-linux-gnu \
+powerpc64le-unknown-linux-gnu \
+s390x-unknown-linux-gnu \
+x86_64-unknown-freebsd \
+x86_64-unknown-linux-gnu \
+x86_64-unknown-linux-musl \
+x86_64-unknown-netbsd \
+"
+
+RUST_GT_1_13_LINUX_TARGETS="\
+arm-unknown-linux-musleabi \
+arm-unknown-linux-musleabihf \
+armv7-unknown-linux-musleabihf \
+sparc64-unknown-linux-gnu \
+wasm32-unknown-emscripten \
+x86_64-linux-android \
+x86_64-rumprun-netbsd \
+"
+RUST_GT_1_19_LINUX_TARGETS="\
+aarch64-unknown-linux-musl \
+sparcv9-sun-solaris \
+wasm32-unknown-unknown \
+x86_64-sun-solaris \
+"
+RUST_GT_1_24_LINUX_TARGETS="\
+i586-unknown-linux-musl \
+x86_64-unknown-cloudabi \
+"
+
+RUST_NIGHTLY_LINUX_TARGETS="\
+aarch64-fuchsia \
+armv5te-unknown-linux-gnueabi \
+armv5te-unknown-linux-musleabi \
+i686-pc-windows-gnu \
+wasm32-wasi \
+x86_64-fortanix-unknown-sgx \
+x86_64-fuchsia \
+x86_64-pc-windows-gnu \
+x86_64-unknown-linux-gnux32 \
+x86_64-unknown-redox \
+"
+
+RUST_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 \
+"
+
+# The targets are listed here alphabetically
+TARGETS=""
+case "${OS}" in
+    linux*)
+        TARGETS="${RUST_LINUX_TARGETS}"
+
+        if [ "${RUST}" != "1.13.0" ]; then
+            TARGETS="${TARGETS} ${RUST_GT_1_13_LINUX_TARGETS}"
+            if [ "${RUST}" != "1.19.0" ]; then
+                TARGETS="${TARGETS} ${RUST_GT_1_19_LINUX_TARGETS}"
+                if [ "${RUST}" != "1.24.0" ]; then
+                    TARGETS="${TARGETS} ${RUST_GT_1_24_LINUX_TARGETS}"
+                fi
+            fi
+        fi
+
+        if [ "${RUST}" = "nightly" ]; then
+            TARGETS="${TARGETS} ${RUST_NIGHTLY_LINUX_TARGETS}"
+        fi
+
+        ;;
+    osx*)
+        TARGETS="${RUST_OSX_TARGETS}"
+        ;;
+    *)
+        ;;
+esac
+
+for TARGET in $TARGETS; do
+    test_target cargo "$TARGET"
+done
+
+# FIXME: https://github.com/rust-lang/rust/issues/58564
+# sparc-unknown-linux-gnu
+RUST_LINUX_NO_CORE_TARGETS="\
+aarch64-pc-windows-msvc \
+aarch64-unknown-cloudabi \
+aarch64-unknown-hermit \
+aarch64-unknown-netbsd \
+aarch64-unknown-openbsd \
+armebv7r-none-eabi \
+armebv7r-none-eabihf \
+armv7-unknown-cloudabi-eabihf \
+armv7r-none-eabi \
+armv7r-none-eabihf \
+i586-pc-windows-msvc \
+i686-pc-windows-msvc \
+i686-unknown-cloudabi \
+i686-unknown-haiku \
+i686-unknown-netbsd \
+i686-unknown-openbsd \
+mips-unknown-linux-uclibc \
+mipsel-unknown-linux-uclibc \
+nvptx64-nvidia-cuda \
+powerpc-unknown-linux-gnuspe \
+powerpc-unknown-netbsd \
+riscv32imac-unknown-none-elf \
+riscv32imc-unknown-none-elf \
+sparc64-unknown-netbsd \
+thumbv6m-none-eabi \
+thumbv7em-none-eabi \
+thumbv7em-none-eabihf \
+thumbv7m-none-eabi \
+thumbv7neon-linux-androideabi \
+thumbv7neon-unknown-linux-gnueabihf \
+thumbv8m.main-none-eabi \
+x86_64-pc-windows-msvc
+x86_64-unknown-dragonfly \
+x86_64-unknown-haiku \
+x86_64-unknown-hermit \
+x86_64-unknown-l4re-uclibc \
+x86_64-unknown-openbsd \
+"
+
+if [ "${RUST}" = "nightly" ] && [ "${OS}" = "linux" ]; then
+    for TARGET in $RUST_LINUX_NO_CORE_TARGETS; do
+        test_target xargo "$TARGET" 1
+    done
+fi