code review 106260044: cmd/cgo: for -godefs, promote first field of anonymous union

cmd/cgo: for -godefs, promote first field of anonymous union

Update issue 6677

When a struct contains an anonymous union, use the type and
name of the first field in the union.

This should make the glibc <sys/resource.h> file work; in that
file struct rusage has fields like

__extension__ union
{
        long int ru_maxrss;
        __syscall_slong_t __ru_maxrss_word;
};

in which the field that matters is ru_maxrss and
__ru_maxrss_word just exists to advance to the next field on
systems where the kernel uses long long fields but userspace
expects long fields.

[iant, 2014-06-28 00:35:36]

Hello golang-codereviews@googlegroups.com,

I'd like you to review this change to
https://code.google.com/p/go

[mikio, 2014-06-29 01:56:03]

lgtm

[iant, 2014-08-06 00:10:20]

*** Submitted as https://code.google.com/p/go/source/detail?r=d1cf884a594f ***

cmd/cgo: for -godefs, promote first field of anonymous union

Update issue 6677

When a struct contains an anonymous union, use the type and
name of the first field in the union.

This should make the glibc <sys/resource.h> file work; in that
file struct rusage has fields like

__extension__ union
{
        long int ru_maxrss;
        __syscall_slong_t __ru_maxrss_word;
};

in which the field that matters is ru_maxrss and
__ru_maxrss_word just exists to advance to the next field on
systems where the kernel uses long long fields but userspace
expects long fields.

LGTM=mikioh.mikioh
R=golang-codereviews, mikioh.mikioh
CC=golang-codereviews
https://codereview.appspot.com/106260044