Debug

Strace observes system calls and signals at the boundary between a selected Linux process and the kernel. It can reveal attempted paths, arguments, return values, and errors without rebuilding the program. That evidence is useful when application logs omit an operation, but it does not expose every user-space decision or automatically identify which failed call caused the application’s final outcome. ...

Automated bisection repeatedly checks a revision and turns the result into a history decision. It can replace many manual checkouts with roughly logarithmic probes on a simple range, but the speedup depends on a trustworthy test. A wrapper that misclassifies missing tools or broken infrastructure can confidently identify the wrong commit. Designing the verdict contract is therefore part of debugging, not merely setup around the search. ...