fix bugs on android armv7, because pw.pw_passwd.is_null()

[ClarkGuan]

crash on my Android phone because pw.pw_passwd == NULL

[rtzoeller]

How are you testing these changes - something like Termux? I'd like to see if I can reproduce this on my end.

Thanks!

[ClarkGuan]

@rtzoeller use adb which in Android SDK like below:

$ adb push <path-to-exec> /data/local/tmp
$ adb shell /data/local/tmp/<exec-file>

Rust code:

use nix::unistd::{self, User};

fn main() {
    let user = User::from_uid(unistd::getuid())
        .expect("getpwuid_r()")
        .expect("option");
    println!("{:?}", user);
}

Crash also happened on aarch64 android platform.

[rtzoeller]

Thanks! Confirmed this reproduces for me.

Can you add an entry to the CHANGELOG.md file under the Fixed section, squashed into the current commit?

[rtzoeller]

@ClarkGuan can you squash the current two commits into a single commit?

[ClarkGuan]

@rtzoeller OK.

[rtzoeller]

bors r+

[bors]

Build succeeded:

• Android aarch64
• Android arm
• Android armv7
• Android i686
• Android x86_64
• DragonFly BSD x86_64
• FreeBSD 12 amd64 & i686
• FreeBSD 14 amd64 & i686
• Fuchsia x86_64
• Haiku x86_64
• Illumos
• iOS aarch64
• iOS x86_64
• Linux aarch64
• Linux arm gnueabi
• Linux arm-musleabi
• Linux armv7 gnueabihf
• Linux armv7 uclibceabihf
• Linux i686
• Linux i686 musl
• Linux MIPS
• Linux MIPS64
• Linux MIPS64 el
• Linux mipsel
• Linux powerpc
• Linux powerpc64
• Linux powerpc64le
• Linux s390x
• Linux x32
• Linux x86_64
• Linux x86_64 musl
• macOS aarch64
• macOS x86_64
• Minver
• NetBSD x86_64
• OpenBSD x86_64
• Redox x86_64
• Rust Formatter
• Rust Stable