Bug 1410952 - rust FTBFS with LLVM 3.8 on s390x
Summary: rust FTBFS with LLVM 3.8 on s390x
Alias: None
Product: Fedora
Classification: Fedora
Component: rust
Version: 25
Hardware: s390x
OS: Linux
Target Milestone: ---
Assignee: Rust SIG
QA Contact: Fedora Extras Quality Assurance
Depends On: 1410950 1412204
Blocks: ZedoraTracker
TreeView+ depends on / blocked
Reported: 2017-01-06 23:37 UTC by Josh Stone
Modified: 2017-06-20 13:48 UTC (History)
11 users (show)

Fixed In Version: rust-1.18.0-1.fc25
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1410950
Last Closed: 2017-06-20 13:48:52 UTC
Type: Bug

Attachments (Terms of Use)

Description Josh Stone 2017-01-06 23:37:23 UTC
+++ This bug was initially created as a clone of Bug #1410950 +++

Description of problem:
Attempts to bootstrap Rust on s390x failed with an LLVM ERROR on f24 and f25.  The same srpm on f26 (with LLVM 3.9) is fine.

f24: https://s390.koji.fedoraproject.org/koji/taskinfo?taskID=2439756
f25: https://s390.koji.fedoraproject.org/koji/taskinfo?taskID=2439754

Version-Release number of selected component (if applicable):
building rust-1.14.0-1.fc25/24

How reproducible:

Steps to Reproduce:
1. rpmbuild --rebuild rust-1.14.0-1.fc25.src.rpm
(or try again on s390.koji)

Actual results:
LLVM ERROR: Cannot select: 0x3ff793b6d90: ch = AtomicFence 0x3ff70818a70, Constant:i64<4>, Constant:i64<1>
  0x3ff728d89c0: i64 = Constant<4>
  0x3ff793b7120: i64 = Constant<1>
In function: _ZN33_$LT$alloc..arc..Arc$LT$T$GT$$GT$9drop_slow17h19a3f415d8721b31E

Expected results:
no compiler errors :)

Additional info:
A similar problem was reported upstream for compiling v8 with Clang 3.8, then closed when it was found to work with 3.9.  That's probably a simpler reproducer.

Also, the rawhide builds of Rust with LLVM 3.9 were fine:

Comment 1 Fedora Admin XMLRPC Client 2017-01-24 18:42:00 UTC
This package has changed ownership in the Fedora Package Database.  Reassigning to the new owner of this component.

Comment 2 Dan Horák 2017-05-10 13:07:27 UTC
Because there is now llvm 3.9 in F-25 for some time it should be possible to get Rust built there too. I'll try some tricks :-)

Comment 3 Dan Horák 2017-06-20 13:48:52 UTC
I've rebuilt the "old" portion of the rust stack with llvm 3.9 instead of llvm 3.8 and all went well till the latest rust and cargo.

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