microsoft / microsoft/TypeScript

compiler memory leak in 5.8.x and upwards

Open
#62,143 10 comments 2 reactions 0 assignees View on GitHub
Needs More Info
Dominant language
Go
Stars
111k
Forks
14.3k
Avg merge
2d 4h
Merged PRs (30d)
132

Description

### 🔎 Search Terms

5.8, mem

### 🕗 Version & Regression Information

- This changed between versions 5.7 and 5.8

### ⏯ Playground Link

_No response_

### 💻 Code

https://github.com/fxdave/cuple/pull/new/typescript-issue-5-8-memory-leak

### 🙁 Actual behavior

```
$ npx tsc

<--- Last few GCs --->

[34857:0x559d92e7c000] 42329 ms: Scavenge (interleaved) 4081.2 (4090.1) -> 4078.8 (4098.6) MB, pooled: 0 MB, 5.79 / 0.00 ms (average mu = 0.281, current mu = 0.252) allocation failure;
[34857:0x559d92e7c000] 43481 ms: Mark-Compact (reduce) 4089.9 (4103.4) -> 4081.8 (4088.4) MB, pooled: 0 MB, 59.32 / 0.00 ms (+ 880.5 ms in 176 steps since start of marking, biggest step 5.5 ms, walltime since start of marking 998 ms) (average mu = 0.2
FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
----- Native stack trace -----

1: 0x559d50eec8b4 node::OOMErrorHandler(char const*, v8::OOMDetails const&) [node]
2: 0x559d5140dd34 v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, v8::OOMDetails const&) [node]
3: 0x559d5140de3b v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, v8::OOMDetails const&) [node]
4: 0x559d5169e0ac [node]
5: 0x559d516a4356 v8::internal::Heap::CheckIneffectiveMarkCompact(unsigned long, double) [node]
6: 0x559d516a4467 v8::internal::Heap::RecomputeLimits(v8::internal::GarbageCollector, v8::base::TimeTicks) [node]
7: 0x559d516b3bc4 [node]
8: 0x559d516b6dd4 [node]
9: 0x559d52146ba7 [node]
fish: Job 1, 'npx tsc' terminated by signal SIGABRT (Abort)
```

### 🙂 Expected behavior

```
$ npx tsc
(List of type errors.)
```

### Additional information about the issue

NOTE:
It's not a node(24.4.1) issue, I tried with a different node version (node:22-bookworm from dockerhub).
The project is tiny.
I tried adding all my free rams to node (12GB) it ate it.

Steps to reproduce:
``` bash
# Download this branch: https://github.com/fxdave/cuple/pull/new/typescript-issue-5-8-memory-leak
git clone -b typescript-issue-5-8-memory-leak https://github.com/fxdave/cuple.git
cd cuple

# Setup:
npm i
make build # Important!

# run npx tsc in the tests folder
cd test
npx tsc
```

(the code contains errors, but that shouldn't matter.)

Contributor guide

Open the contributing guide

Research direction

Reproduce with the cuple repository's typescript-issue-5-8-memory-leak branch: run npm i, make build, then cd test and run npx tsc. Compare TypeScript 5.8+ with 5.7 using the supplied project and confirm that compilation reports type errors instead of exhausting the heap.】【。

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.