phanalist

E0034: intdiv() Overflow

E0034 reports intdiv() calls that overflow for PHP_INT_MIN / -1. It is the overflow member of Phanalist’s bounded formal verification family (E0031-E0043). The family shares a Z3-backed engine that encodes path conditions and values, so a finding comes with a solver-backed counterexample rather than a heuristic guess.

What it checks

• intdiv(PHP_INT_MIN, -1) and equivalent constant expressions
• Symbolic dividends and divisors whose feasible values reach the overflow case
• Guarded calls and bounded integer ranges
• Constant-return, identity, and PHPDoc method/function summaries

Model limits

E0034 shares the model limits, loop bounds, and interprocedural behavior described in E0031.

Configuration

rules:
  E0034:
    php_version: "8.4"
    check_intdiv: true

See E0031 for the shared model limits, unknown_policy behavior, and per-code configuration.

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