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[SR-5076] Unable to set environment variables on Linux #4095

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swift-ci opened this issue Jun 2, 2017 · 2 comments
Closed

[SR-5076] Unable to set environment variables on Linux #4095

swift-ci opened this issue Jun 2, 2017 · 2 comments
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bug Foundation

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@swift-ci
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swift-ci commented Jun 2, 2017

Previous ID SR-5076
Radar None
Original Reporter ylin (JIRA User)
Type Bug
Status Resolved
Resolution Done
Environment

Ubuntu 16.04, Swift 3.1.1

Additional Detail from JIRA
Votes 0
Component/s Foundation
Labels Bug
Assignee None
Priority Medium

md5: 4656dd62c0d34fa55d599a3fef91df61

Issue Description:

On macOS, I am able to set env vars via `setenv`:

ylin@youming-mbpr:~$ swift
Welcome to Apple Swift version 3.1 (swiftlang-802.0.53 clang-802.0.42). Type :help for assistance.
  1> import Foundation
  2> ProcessInfo.processInfo.environment
$R0: [String : String] = 2 key/value pairs {
  [0] = {
    key = "OS_ACTIVITY_DT_MODE"
    value = "enable"
  }
  [1] = {
    key = "__CF_USER_TEXT_ENCODING"
    value = "0x1F5:0x0:0x0"
  }
}
  3> setenv("TEST", "FOOBAR", 1)
$R1: Int32 = 0
  4> ProcessInfo.processInfo.environment
$R2: [String : String] = 3 key/value pairs {
  [0] = {
    key = "TEST"
    value = "FOOBAR"
  }
  [1] = {
    key = "OS_ACTIVITY_DT_MODE"
    value = "enable"
  }
  [2] = {
    key = "__CF_USER_TEXT_ENCODING"
    value = "0x1F5:0x0:0x0"
  }
}

However, on Ubuntu 16.04, I am not able to:

ylin@ylin-VirtualBox:~$ swift -I/home/ylin/.swiftenv/versions/3.1.1/usr/lib/swift/clang/include
Welcome to Swift version 3.1.1 (swift-3.1.1-RELEASE). Type :help for assistance.
  1> import Foundation
  2> ProcessInfo.processInfo.environment
$R0: [String : String] = 0 key/value pairs
  3> setenv("TEST", "FOOBAR", 1)
$R1: Int32 = 0
  4> ProcessInfo.processInfo.environment 
$R2: [String : String] = 0 key/value pairs

I want to be able to set custom env vars in unit tests in order to test features of a package that reads from env vars and be able to test on both macOS and Ubuntu.
@swift-ci
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swift-ci commented Feb 9, 2018

Comment by Andrew Lees (JIRA)

New issue with more details raised here https://bugs.swift.org/browse/SR-6968

@spevans
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spevans commented Aug 15, 2018

This was fixed as part of SR-6968, and works in Swift 4.1:

$ cat sr_5076.swift 
import Foundation

print(ProcessInfo.processInfo.environment)
setenv("TEST", "FOOBAR", 1)
print(ProcessInfo.processInfo.environment)

$ env -i ~/swift-4.1-RELEASE-ubuntu16.04/usr/bin/swift sr_5076.swift 
["LD_LIBRARY_PATH": "/home/spse/swift-4.1-RELEASE-ubuntu16.04/usr/lib/swift/linux"]
["LD_LIBRARY_PATH": "/home/spse/swift-4.1-RELEASE-ubuntu16.04/usr/lib/swift/linux", "TEST": "FOOBAR"]

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 5, 2022
This issue was closed.
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@spevans @swift-ci