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[SR-1532] Memory leak in CharacterView.dropFirst? #44141

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Bouke opened this issue May 16, 2016 · 0 comments
Open

[SR-1532] Memory leak in CharacterView.dropFirst? #44141

Bouke opened this issue May 16, 2016 · 0 comments
Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself memory leak bug: Memory leak standard library Area: Standard library umbrella

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@Bouke
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Bouke commented May 16, 2016

Previous ID SR-1532
Radar rdar://problem/26499810
Original Reporter @Bouke
Type Bug
Environment

Snapshot of 9th of may on OSX.
Welcome to Apple Swift version 3.0-dev (LLVM dffa09ffd8, Clang 9f0d189820, Swift 1c720b8).

Additional Detail from JIRA
Votes 0
Component/s Compiler, Standard Library
Labels Bug, Leak
Assignee None
Priority Medium

md5: e40f8b3d3bf6d3b4eccec3ff2e3402b8

Issue Description:

Feed the following program a file of a few bytes; and watch memory consumption steadily grow. It consumes a few GB within minutes. As the result of input.dropFirst() is unused, I would assume that it should be freed directly?

import Foundation
var i = 0
var input = (try! String(contentsOfFile: Process.arguments[1])).characters
while true {
    input.dropFirst()
    i += 1
    if(i % 100000 == 0) { print("Dropped \(i) characters") }
}
@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself memory leak bug: Memory leak standard library Area: Standard library umbrella
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@Bouke