• Joe (20/20) Feb 10 2018 I'm getting a segmentation fault when I run 'dub build' and I
• Seb (13/36) Feb 10 2018 DUB should never, ever segfault.
• Joe (8/10) Feb 10 2018 Installing the official (ldc) release doesn't cause the problem,

Joe <jma freedomcircle.com> writes:

I'm getting a segmentation fault when I run 'dub build' and I 
specify a dependency. Specifically, the dependency is 
'derelict-pq' but it could be anything (I tried 'dpq2' and even 
'mysql-native', just for kicks). The segfault occurs when it's 
supposedly searching for the dependency.  Here's the partial 
output of 'dub --vverbose build'

Collecting dependencies for select
   Version selection for dependency derelict-pq (derelict-pq) of 
select is missing.
   Missing dependency derelict-pq >=3.0.0-beta.3 <3.1.0-0 of select
Checking for missing dependencies.
Search for versions of derelict-pq (1 package suppliers)
Segmentation fault

The dub.json is trivial and works to properly build a program 
with 'libpq' directly.  And two months ago I had built the 
derelict-pq sample program and AFAIR everything went fine.

When this first happened last night, code.dlang.org was 
temporarily not accessible but that's been resolved now.  Before 
I report this as an issue, I thought I'd get some feedback.  I'm 
running dub 1.7.0-2, built on Jan  3 2018, on Debian buster.

Seb <seb wilzba.ch> writes:

On Sunday, 11 February 2018 at 00:31:28 UTC, Joe wrote:
 I'm getting a segmentation fault when I run 'dub build' and I 
 specify a dependency. Specifically, the dependency is 
 'derelict-pq' but it could be anything (I tried 'dpq2' and even 
 'mysql-native', just for kicks). The segfault occurs when it's 
 supposedly searching for the dependency.  Here's the partial 
 output of 'dub --vverbose build'

 Collecting dependencies for select
   Version selection for dependency derelict-pq (derelict-pq) of 
 select is missing.
   Missing dependency derelict-pq >=3.0.0-beta.3 <3.1.0-0 of 
 select
 Checking for missing dependencies.
 Search for versions of derelict-pq (1 package suppliers)
 Segmentation fault

 The dub.json is trivial and works to properly build a program 
 with 'libpq' directly.  And two months ago I had built the 
 derelict-pq sample program and AFAIR everything went fine.

 When this first happened last night, code.dlang.org was 
 temporarily not accessible but that's been resolved now.  
 Before I report this as an issue, I thought I'd get some 
 feedback.  I'm running dub 1.7.0-2, built on Jan  3 2018, on 
 Debian buster.

DUB should never, ever segfault.
Please report an issue to the dub issue tracker 
(https://github.com/dlang/dub/issues) with a minimal example to 
reproduce. Thanks!

 built on Jan  3 2018, on Debian buster.

Ideally you could verify whether this also happens with the 
official release.
The quick way to try this:

---
. $(curl https://dlang.org/install.sh | bash -s)
dub
---

See also: https://dlang.org/install.html

Joe <jma freedomcircle.com> writes:

On Sunday, 11 February 2018 at 00:59:10 UTC, Seb wrote:
 Ideally you could verify whether this also happens with the 
 official release.

Installing the official (ldc) release doesn't cause the problem, 
so presumably this is a problem with the Debian buster release.  
However, I notice the official dub reports as version 1.6.0 built 
on 6 Jan, whereas the official ldc is 1.7.0 and the Debian dub 
is, as mentioned before, 1.7.0-2, and the Debian ldc2 says it's 
version 1.5.0, based on DMD 2.075.1, i.e., the version numbers 
are confusing to say the least.