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Incorrect result for n + ++n compared with V8 #5545

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#5546
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Incorrect result for n + ++n compared with V8#5545
#5546

Description

@wyattzheng
wyattzheng
opened on Oct 1, 2026

Reproduced with unmodified boa_engine 0.22.0.

(()=>{var n=1;return n + ++n})()
  • Boa: 4
  • V8 (Chromium): 3

Expected: 3, matching V8. The left operand should retain its value before ++n is evaluated.

Activity

  1. Niloyyy commented on Oct 2, 2026

    @Niloyyy
    Niloyyy
    on Oct 2, 2026

    I am working on this issue.

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