code review 111230044: cmd/ld: use count, not upper bound, in type of array

cmd/ld: use count, not upper bound, in type of array
DWARF says only one is necessary.
The count is preferable because it admits 0-length arrays.
Update debug/dwarf to handle either form.

[r, 2014-07-16 18:04:10]

Hello rsc (cc: golang-codereviews@googlegroups.com),

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

[rsc, 2014-07-16 18:20:52]

LGTM

If clang/gcc write these out it would fix some long-standing bugs in cgo.
Not sure if they do.

[r, 2014-07-16 18:26:53]

*** Submitted as https://code.google.com/p/go/source/detail?r=b347db31aa87 ***

cmd/ld: use count, not upper bound, in type of array
DWARF says only one is necessary.
The count is preferable because it admits 0-length arrays.
Update debug/dwarf to handle either form.

LGTM=rsc
R=rsc
CC=golang-codereviews
https://codereview.appspot.com/111230044

[gobot, 2014-07-16 18:45:31]

This CL appears to have broken the linux-arm-cheney-panda builder.
See http://build.golang.org/log/66a0a61034c9cd24b707adcfd204a17d20ddbdf7

[rsc, 2014-07-16 18:51:36]

Seems unlikely. A cgo failure I could understand.