swiftlang/swift

[SR-11884] Link-In ubsan_standalone If libFuzzer is used in Isolation

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#54,300 opened on Dec 2, 2019

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Description
Previous ID SR-11884
Radar rdar://problem/57561703
Original Reporter @CodaFi
Type Improvement
Votes 0
Component/s Compiler
Labels Improvement, Driver, StarterBug
Assignee None
Priority Medium

md5: dbc17fedacd6b7aadfdf4e5529d7bd3d

Issue Description:

libFuzzer can be used apart from the other sanitizers, but it still relies on compiler RT primitives to get its job done. We should detect if the user is just linking libFuzzer standalone and automatically add ubsan_standalone to the link line.

Contributor guide

Research direction
Investigate how libFuzzer is linked in the Swift compiler driver and find the correct place to add ubsan standalone when libFuzzer is used without other sanitizers.
Tech stack
cppswift
Domain
compilers
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitC++ build systems
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70