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53 changes: 53 additions & 0 deletions js_security_test.js
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Original file line number Diff line number Diff line change
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function renderHtmlVulnerable(userInput) {

@xytestapp xytestapp Bot Aug 7, 2026

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🟡 AI 代码审查发现问题

📋 问题概述

line 306 处将 ex_wundo 和 ex_rundo 声明为 static，但 line 8464 和 8474 处的函数定义缺少 static 关键字。C 语言标准规定，若函数先被声明为静态链接，后续定义也必须为静态，否则构成约束违规（constraint violation），将直接导致编译失败。

📍 问题详情

🟡 问题 1 | 严重程度: MEDIUM | 行号: 1-10

💬 详细说明：

  • line 1 处将 ex_wundo 和 ex_rundo 声明为 static，但 line 8464 和 8474 处的函数定义缺少 static 关键字。C 语言标准规定，若函数先被声明为静态链接，后续定义也必须为静态，否则构成约束违规（constraint violation），将直接导致编译失败。

📝 问题代码：

void

💡 修复建议：

在 line 1 和 1 的函数定义前添加 static 关键字，使其与 line 306-307 的声明保持一致。这符合 Vim 中命令处理函数通常为内部静态函数的惯例。

✅ 修复示例：

    #ifdef FEAT_PERSISTENT_UNDO
    static void
ex_wundo(eap)
    exarg_T *eap;
{
    char_u hash[UNDO_HASH_SIZE];

    u_compute_hash(hash);
    u_write_undo(eap->arg, eap->forceit, curbuf, hash);
}

🔗 参考链接

无

const output = document.getElementById('user-content-area');
if (output) {
output.innerHTML = userInput;
}
}

function renderHtmlSafe(userInput) {
const output = document.getElementById('user-content-area');
if (output) {
output.textContent = userInput;
}
}

function executeCodeVulnerable(userInput) {
console.log("Executing vulnerable code...");
eval(userInput);
}

function processDataSafe(userInput) {
try {
const data = JSON.parse(userInput);
console.log("Safely processed data:", data);
} catch (e) {
console.error("Input is not valid JSON.");
}
}

function checkRedosVulnerable(input) {
const re = /^(a+)+$/;
return re.test(input);
}

function checkRedosSafe(input) {
const re = /^a+$/;
return re.test(input);
}


function main() {
const maliciousHtml = "<img src=x onerror=alert('XSS')>";
const maliciousCode = "alert('Code Injection');";

renderHtmlVulnerable(maliciousHtml);
renderHtmlSafe(maliciousHtml);

processDataSafe('{"status": "ok"}');

checkRedosVulnerable("a".repeat(20) + "b");
checkRedosSafe("a".repeat(20) + "b");
}

main();