xgo-dev / xgo-dev/llgo

panic in HashTrieMap

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#1,935 0 comments 0 reactions 0 assignees View on GitHub

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Dominant language
LLVM
Stars
758
Forks
49
Avg merge
1d 6h
Merged PRs (30d)
138

Description

package main

import (
	"os"
)

func main() {
	os.Exit(1)
}
Program received signal SIGSEGV, Segmentation fault.
#0  0x00000000002428e6 in internal/sync.(*HashTrieMap[any,any]).initSlow ()
#1  0x0000000000243bf3 in internal/sync.(*HashTrieMap[any,any]).Range ()
#2  0x000000000023f602 in internal/godebug[update] ()
#3  0x0000000000246e26 in internal/godebug[setUpdate] ()
#4  0x000000000023ef23 in internal/godebug[init] ()
#5  0x0000000000225c26 in time[init] ()
#6  0x00000000002239a9 in io/fs[init] ()
#7  0x00000000002238df in internal/filepathlite[init] ()
#8  0x00000000002151d6 in os[init] ()
#9  0x0000000000215073 in main ()

llgo v0.13.1-0.20260603081057-a65b6c7e4aea linux/amd64
built from this repo manually

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the provided os.Exit(1) program with llgo on linux/amd64 and inspect the stack trace. Trace the internal/sync.HashTrieMap initSlow and Range calls shown in the report, along with internal/godebug initialization. Done means the program no longer segfaults during startup.

Written by the indexing model from the issue text.

Assessment

Tech stack
go
Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
45/100

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