emscripten-core/emscripten

Sanitizers with dynamic linking

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#13,184 opened on Jan 4, 2021

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Description

Hi,

it would be great if it would be possible to use sanitizers with dynamic linking. Currently, when I pass -fsanitize=leak (for example) to the emcc command of my MAIN_MODULE, Emscripten outputs:

emcc: error: LSan does not support dynamic linking

Specifically, I would like to test my application for memory leaks.

Thanks for your great work! :+1:

Contributor guide

Research direction
Investigate the current implementation of LeakSanitizer in Emscripten for dynamic linking. Identify the parts of the compiler that reject this combination and understand the underlying reasons. Look into how other sanitizers handle dynamic linking. Propose a solution.
Tech stack
ccpp
Domain
compilers
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
CC++Emscripten
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25