Line Execution Checker
Purpose
Fast tool to check if specific source lines were executed during test runs.
Tool: line-checker
Build
g++ -O3 -std=c++17 line_checker.cpp -o line-checker
Usage
Single line
./line-checker file.c:42
Multiple lines
./line-checker file.c:42 main.c:100 util.c:55
Output
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
-
Verify .gcda files exist: find . -name "*.gcda" -print -quit
-
Build tool if needed: g++ -O3 -std=c++17 line_checker.cpp -o line-checker
-
Run: ./line-checker file.c:X
-
Report result to user
Example Interaction
User: "Was line 127 in parser.c executed?"
./line-checker parser.c:127
Output: parser.c:127 EXECUTED (3 times)
Response: "Yes, line 127 was executed 3 times during testing."