AgentSkillsCN

Line Execution Checker

利用 gcov 数据检查特定行是否被执行

SKILL.md
--- frontmatter
name: Line Execution Checker
description: Check if specific lines were executed using gcov data
user-invocable: false
version: 1.0
author: Claude
tags:
  - coverage
  - gcov
  - testing

Line Execution Checker

Purpose

Fast tool to check if specific source lines were executed during test runs.

Tool: line-checker

Build

bash
g++ -O3 -std=c++17 line_checker.cpp -o line-checker

Usage

bash
# Single line
./line-checker file.c:42

# Multiple lines
./line-checker file.c:42 main.c:100 util.c:55

Output

code
file.c:42 EXECUTED (5 times)
main.c:100 NOT EXECUTED
util.c:55 EXECUTED (12 times)

Exit Codes

  • •0: All lines executed
  • •1: One or more lines NOT executed
  • •2: Error

Prerequisites

Coverage data must exist from prior test run with --coverage flag.

When User Asks

"Was line X of file.c executed?" or "Check if these lines were covered"

Steps

  1. •Verify .gcda files exist: find . -name "*.gcda" -print -quit
  2. •Build tool if needed: g++ -O3 -std=c++17 line_checker.cpp -o line-checker
  3. •Run: ./line-checker file.c:X
  4. •Report result to user

Example Interaction

User: "Was line 127 in parser.c executed?"

bash
./line-checker parser.c:127
# Output: parser.c:127 EXECUTED (3 times)

Response: "Yes, line 127 was executed 3 times during testing."