corrupt code is generated if the union contains an array.

[taro-yamada]

Input C/C++ Header

//test.h
union TestUnion {
    int testArray[ 5 ] ;
} ;

Bindgen Invocation

bindgen test.h --no-derive-copy --no-derive-debug --no-layout-tests

Actual Results

/* automatically generated by rust-bindgen */

#[repr(C)]; 5usize ] , }

Expected Results

#[repr(C)]
pub union TestUnion {
    pub testArray : [ ::std::os::raw::c_int ; 5 ] ,
}

Environment

OS/distribution

ArchLinux

bindgen version

bindgen --version
bindgen 0.31.3

rustc version

rustc --version
rustc 1.23.0-nightly (d6b06c63a 2017-11-09)

clang version

clang --version
clang version 5.0.0 (tags/RELEASE_500/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin

and also clang39 get same result.

Description

First of all, I'm sorry if my English is hard to understand.

If the union contains an array, bindgen generate strange code fragment like above.
I use "--no-derive-copy --no-derive-debug --no-layout-tests" flags here to reduce the code for explanation.
Even without them, I get the same corrupt code fragment.
And I also tried "--rust-target=nightly" flag but it does not take effect.

[emilio]

I think this is a rustfmt bug, and using --no-rustfmt-bindings or upgrading / using rustfmt-nightly should work, see #1045 and similar issues.

Thanks for the report!