tree a1529990773007160910147da6712e428af255e1
parent bd1169dd2144abbe58767bf2dfaa3f20e8cf553b
author Russ Cox <rsc@golang.org> 1414522813 -0400
committer Russ Cox <rsc@golang.org> 1414522813 -0400
golang-hg 723cc35d358383537c1ca258ba0539f9ad1644c5

os: do not assume syscall i/o funcs return n=0 on error

Fixes #9007.

LGTM=iant, r
R=r, iant
CC=golang-codereviews
https://golang.org/cl/160670043