Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 549598 - dev-lang/go-bootstrap: Build fails with FEATURES=splitdebug
Summary: dev-lang/go-bootstrap: Build fails with FEATURES=splitdebug
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Development (show other bugs)
Hardware: All Linux
: Normal normal
Assignee: William Hubbs
URL:
Whiteboard:
Keywords:
: 558400 (view as bug list)
Depends on:
Blocks:
 
Reported: 2015-05-15 23:26 UTC by Geoff Levand
Modified: 2015-08-23 15:41 UTC (History)
6 users (show)

See Also:
Package list:
Runtime testing required: ---

Attachments
bug fix patch (file_549598.txt,1.27 KB, text/plain)
2015-05-15 23:26 UTC, Geoff Levand 		Details
dev-lang/go-bootstrap: avoid stripping test data files (0001-dev-lang-go-bootstrap-avoid-stripping-test-data-file.patch,1.72 KB, patch)
2015-08-21 20:44 UTC, mike@marineau.org 		Details | Diff
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Geoff Levand 2015-05-15 23:26:28 UTC 
Created attachment 403352 [details]
bug fix patch

When emerging with FEATURES=splitdebug dev-lang/go and dev-lang/go-bootstrap have the same debug build-id for the file src/debug/dwarf/testdata/typedef.elf.

 * Detected file collision(s):
 * 
 *      /usr/lib/debug/.build-id/3c/bafbed5802dff5c21b34efcb0c6eb249a408ac.debug
 *      /usr/lib/debug/.build-id/3c/bafbed5802dff5c21b34efcb0c6eb249a408ac
Comment 1 Geoff Levand 2015-05-22 17:12:14 UTC 
bump
Comment 2 Mike Gilbert gentoo-dev 2015-05-23 15:14:49 UTC 
You probably need to rebuild gcc; the build-id stuff has been disabled for months.

See bug 526144.
Comment 3 Marien Zwart (RETIRED) gentoo-dev 2015-08-21 09:09:41 UTC 
Reopening, it's slightly more interesting than that.

I'm getting this with a fairly recently built gcc-4.9.3 (from July 2nd this year, so half a year more recent than that bug).

The collision is on:

 * dev-lang/go-1.4.2:0::gentoo
 *      /usr/lib/debug/.build-id/3c/bafbed5802dff5c21b34efcb0c6eb249a408ac
 *      /usr/lib/debug/.build-id/3c/bafbed5802dff5c21b34efcb0c6eb249a408ac.debug

The former is a symlink to /usr/lib/go/src/debug/dwarf/testdata/typedef.elf.

This is in fact a testdata file that's included in the go1.4.2.src.tar.gz tarball:

% tar xf /usr/portage/distfiles/go1.4.2.src.tar.gz
% file ./go/src/debug/dwarf/testdata/typedef.elf
./go/src/debug/dwarf/testdata/typedef.elf: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.15, BuildID[sha1]=3cbafbed5802dff5c21b34efcb0c6eb249a408ac, not stripped

I suspect the toolchain used to create this file had "the build-id stuff" enabled, and that's biting us.

The source for the testdata file seems to be included (go/src/debug/dwarf/testdata/typedef.c). One workaround might be to rebuild the testdata file in the ebuild. Another workaround might be to remove the problematic testdata from go-bootstrap, only keeping it in go proper.

In the mean time, I'll go see if downgrading go works around this.
Comment 4 Marien Zwart (RETIRED) gentoo-dev 2015-08-21 09:11:23 UTC 
...that was a silly suggestion, there is no older go ebuild in the tree.
Comment 5 mike@marineau.org 2015-08-21 20:44:17 UTC 
Created attachment 409784 [details, diff]
dev-lang/go-bootstrap: avoid stripping test data files

Another way to resolve this issue is to simply avoid stripping test data files as the latest go-9999 ebuild does. Here's a ebuild patch to do just that :)
Comment 6 Marien Zwart (RETIRED) gentoo-dev 2015-08-23 09:03:03 UTC 
*** Bug 558400 has been marked as a duplicate of this bug. ***
Comment 7 William Hubbs gentoo-dev 2015-08-23 15:41:17 UTC 
The patch in comment #5 was applied, thanks much.
Let me know if this is still an issue.

William