Ruby Issue Tracking System

06/30/2025

11:34 AM Ruby Bug #21461 (Closed): Heap-buffer-overflow in Prism when encoding magic comment is invalid and assignment is incomplete

### Description
An AddressSanitizer (ASan) heap-buffer-overflow occurs in Ruby when:
1. The file contains an invalid magic encoding comment, and
2. A line with incomplete assignment (e.g. missing right-hand side).
This leads... bendrissou (Bachir Bendrissou)

10:27 AM Ruby Bug #21460 (Closed): Pattern matching crash: unexpected PM_CALL_NODE

Hi,
Pattern matching crashes when using an arithmetic expression like `-1**2` in a hash pattern. Ruby attempts to process the expression as a PM_CALL_NODE, which results in a compiler crash rather than a syntax or match error.
### ... bendrissou (Bachir Bendrissou)

06/11/2025

08:35 PM Ruby Bug #21439 (Closed): Crash with PM_SPLAT_NODE compiler error (Prism)

Hi Ruby team,
I'm encountering a crash when using a splat (*) on the left-hand side of a for loop in the latest Ruby build from master. The error occurs during compilation, and seems related to Prism’s handling of PM_SPLAT_NODE.
##... bendrissou (Bachir Bendrissou)

11/22/2024

02:15 PM Ruby Bug #20906 (Closed): Segmentation Fault in compile_keyword_arg

Hi,
I am getting a segmentation fault. The crash occurs in `compile_keyword_arg` (../compile.c:4604) during argument compilation for the keyword argument assignment.
Minimised test case:
```
a,b[c:nil]=d
```
Output:
```
te... bendrissou (Bachir Bendrissou)

11/21/2024

01:14 PM Ruby Bug #20903 (Closed): Segmentation fault when string encoding

I am getting a segmentation fault. The error appears to relate to the string encoding function: `rb_enc_str_coderange`.
Test case:
```
require 'test/unit'
require "-test-/econv"
class Test_EConvAppend < Test::Unit::T... bendrissou (Bachir Bendrissou)