
Closed
Posted
I have an existing codebase written almost entirely in C that has started throwing errors and producing incorrect output. The immediate task is to track down the root causes, patch the faulty sections, and get the program running cleanly again. There are a couple of small Python helper scripts in the repo, but the real work is in the C sources, built with GCC on a Linux box. You’ll receive the full project tree, a crash log, and a list of scenarios where the results go wrong. Once you’ve isolated the problems, please refactor only what’s necessary, keeping the overall structure intact and documenting every change. Deliverables • Updated C source files with clear, in-line comments on each fix • A concise change-log explaining symptom, diagnosis, and solution for every bug addressed • A clean compilation (-Wall, no warnings) and a build log demonstrating success • Proof the fixes work: sample runs or lightweight unit tests that reproduce the original issues and now pass The job is complete when everything compiles warning-free and the provided test cases run without errors. First pass of fixes in a few days would be great; full hand-off within a week is the target. Let me know what additional information you need and I’ll get it to you quickly.
Project ID: 40416066
23 proposals
Remote project
Active 3 hours ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
23 freelancers are bidding on average ₹257 INR/hour for this job

Hi, I have more than 15 years of product development experience using C, C++ and Qt. I can fix your bugs very easily. Regards, Dushyant
₹400 INR in 40 days
4.0
4.0

With over a decade in the industry, I've honed my skills as a full-stack developer and digital solutions expert. C++ and Python are two languages that I have an exceptional grasp of, perfectly aligning with what you need for your project. I've managed to find effective solutions within complex codebases before, which makes me confident in tackling this task of fixing bugs and refactoring your code without losing its structural integrity. Most importantly, my approach is timely yet thorough. Time-sensitivity is something I understand well, and I assure you, the fixes will be delivered progressively for feedback within the first few days, while the final hand-off will be made well within your week-long target. I'm eager to examine the crash log and citation of instances where things go wrong, trace down the root causes, fix them skillfully, implement lightweight unit tests that accurately reproduce the original issues and subsequently demonstrate their resolution - all these ensuring that everything compiles and runs without any errors. With me on your team, consider these bugs already squashed!
₹399 INR in 15 days
3.5
3.5

Hi there, I read your requirements carefully. I can help debug your existing C codebase, identify the root causes behind crashes/incorrect output, patch only the necessary sections, and keep the overall project structure intact. My approach will be to first review the full project tree, crash logs, build process, and the scenarios where results go wrong. Then I’ll reproduce each issue, trace the faulty logic using GCC/Linux debugging tools, apply focused fixes, and document every change clearly. I can help with: C code debugging on Linux/GCC Crash/error investigation Incorrect output diagnosis Minimal safe refactoring Python helper script review if needed Warning-free compilation with -Wall Sample runs or lightweight tests proving fixes Concise changelog: symptom, diagnosis, solution I’ll make sure the final code compiles cleanly, keeps the existing structure, and includes inline comments where fixes are made. Rate: ₹350/hour || Timeline: First fixes in a few days, full handoff within 5days Payment and timeline details can be discussed further to align with your expectations. Best regards, Oluwatobi Okedairo
₹350 INR in 40 days
2.2
2.2

Dear Client, Thank you for your job posting. I understand that you need an experienced C developer to debug an existing GCC/Linux codebase, identify the root causes of crashes and incorrect output, and apply focused fixes without unnecessary restructuring. This requires strong C programming, memory/debugging skills, Linux build experience, and careful testing. I am well suited for this project because I can analyze crash logs, trace faulty logic, fix only the required sections, and keep the original structure clean and maintainable. I will ensure the project compiles with -Wall without warnings, document each fix clearly, and provide sample runs or lightweight tests proving the reported issues are resolved. I will do my best for your project. I am looking for working with you.
₹150 INR in 37 days
0.0
0.0

I can debug and stabilize your C codebase quickly. I’ll analyze crash logs and failing scenarios, isolate root causes, and apply minimal, well-documented fixes while preserving structure. I’ll ensure clean GCC builds (-Wall, zero warnings), provide a clear changelog (issue → cause → fix), and validate with sample runs/tests proving correctness.
₹450 INR in 40 days
0.0
0.0

As a seasoned software developer, my skills include a deep understanding of C language and proficiency in using GCC on Linux platforms. I have a proven track record in carrying out meticulous troubleshooting through careful examination of existing codebases. My aim is to identify root causes before proceeding with the necessary fixes – an approach that aligns perfectly with your project's objectives. Having worked extensively on backend development, REST APIs, and database integration, I bring the added advantage of not just isolating problems but also ensuring that overall structures are kept intact while patching up the faulty sections. Documentation has always been a crucial aspect of my process; I am committed to providing not only clear and concise in-line comments with each fix but also delivering a comprehensive change-log denoting symptom recognition, diagnosis, and solutions. With my dedication to consistent communication, timely execution, comprehensive documentation, and thorough testing, I am confident that my services will not only fulfil your specific requirements but will also add real value to your project. Given the opportunity to work with you, I believe we can not only rectify the current errors but create an effective+ efficient foundation for your system moving forward
₹100 INR in 40 days
0.0
0.0

Hi, Bugs in C usually come down to memory handling, edge cases, or undefined behavior, fixing them properly means tracing the root cause, not just patching symptoms. I focus on clean debugging so the program runs stable without breaking existing logic. Faizan here, experience working with C on Linux environments, debugging GCC builds, and fixing logic and runtime issues. I can go through your crash logs, reproduce the errors, fix only the necessary parts, and make sure the code compiles clean with no warnings. I will also document each fix clearly with cause and solution, along with proof runs. I can start immediately and deliver the first fixes within a few days. Can you share the crash logs and one failing scenario to begin with? Let’s discuss.
₹350 INR in 40 days
0.0
0.0

I not sure what to write but jo likhna hoga me try Krugi ki best ho aur apko sikhayat ka moka nai mile my writing is good and clear then u can trust me in this work
₹250 INR in 40 days
0.0
0.0

Sudden runtime errors and incorrect outputs in an established C codebase typically point to underlying memory corruption, dangling pointers, or undefined behavior surfacing under specific environments. I bring over 4 years of experience engineering production-grade software for the global automotive industry, specializing specifically in C Programming and Compiler toolchains to ensure maximum reliability. To isolate the root causes and patch these faults without disrupting your overall architecture, I will execute the following debugging pipeline: - Recompile the source tree using GCC with AddressSanitizer (ASan), UndefinedBehaviorSanitizer (UBSan), and strict -Wall/-Wextra flags to immediately expose hidden warnings and memory violations. - Run the provided crash logs and failing scenarios through Valgrind and GDB to capture exact stack traces, isolating the specific logic causing the incorrect outputs. - Refactor only the faulty sections with in-line documentation explaining the exact symptom and diagnosis. - Provide a clean compilation log and sample test runs demonstrating that all original issues are resolved and compiling warning-free. Attach the project tree and crash logs so I can run the initial memory profiling immediately.
₹400 INR in 16 days
0.0
0.0

Hello, I've read your request and I can help fix any errors or bugs in your source code. For more details, please open a chat.
₹100 INR in 40 days
0.0
0.0

Bid Proposal: Debugging & Stabilizing Your C Codebase I can take your existing C codebase and restore it to a clean, stable, and warning-free state while preserving its current structure. My approach is systematic: identify root causes, apply minimal fixes, and document everything clearly. Why I’m a Strong Fit I have solid experience debugging C programs on Linux using GCC. I’m comfortable working with legacy or unstable code, focusing on understanding the logic first rather than applying quick patches. I ensure clean compilation with "-Wall" (no warnings) and prioritize maintainable, well-documented fixes. How I’ll Approach the Project - Reproduce issues using your crash logs and scenarios - Trace bugs to their root cause (using tools like gdb/valgrind if needed) - Apply targeted fixes without unnecessary refactoring - Add clear inline comments explaining each change - Validate fixes with test cases and sample runs - Ensure clean compilation and provide build logs Deliverables Updated C source files with inline comments Concise changelog (issue → cause → fix) Warning-free compilation + build log Proof of fixes through tests or sample outputs Timeline - Initial fixes: a few days - Full completion: within one week Share the codebase, logs, and failing scenarios, and I can begin right away.
₹250 INR in 40 days
0.0
0.0

Hi, I can help diagnose and fix your C codebase quickly and cleanly. I’ll start by reproducing the reported crashes and incorrect outputs using your logs and scenarios, then isolate root causes through systematic debugging (GCC warnings, gdb, and targeted tracing). I’ll apply minimal, well-documented fixes to preserve your existing structure, ensure the project compiles with `-Wall` and zero warnings, and validate everything with reproducible test runs. Each fix will include clear inline comments and a concise changelog (symptom → diagnosis → solution). You’ll receive: * Updated C source files (clean and documented) * Warning-free build + build log * Verified test cases showing issues resolved I can deliver an initial round of fixes within a few days and complete the full handoff within a week. Happy to get started—just share the repo and logs. Best regards
₹250 INR in 50 days
0.0
0.0

I work with C and GCC and debugging C code is something I'm genuinely comfortable with. I actually read through your project description properly instead of sending a generic proposal. Send me the project tree and crash log and we can go from there
₹100 INR in 40 days
0.0
0.0

Experienced in C programming, debugging, and unit testing with GCC. Skilled in analyzing crash logs, fixing bugs, ensuring clean builds without warnings, and providing clear documentation and validation of fixes.
₹150 INR in 40 days
0.0
0.0

I’ll first analyze the errors using your crash logs and failing scenarios. Then I’ll debug the code using tools like gdb/by placing debug logs and compiler warnings to find the root causes. I’ll fix only the necessary parts, keeping your code structure unchanged. After that, I’ll make sure the code compiles cleanly with no warnings and verify the fixes using test cases or sample runs. Finally, I’ll provide updated code, a simple changelog (issue → cause → fix), and proof that everything works correctly.
₹228 INR in 28 days
0.0
0.0

I can help debug and fix your C codebase and get it compiling cleanly with correct output. Based on your description, I’ll: - Analyze crash logs and failing scenarios to identify root causes - Fix issues with minimal changes while preserving the existing structure - Ensure clean compilation with GCC (-Wall, no warnings) - Provide clear inline comments and a concise changelog for each fix - Validate fixes using test cases and sample runs I have experience working with C, debugging logic issues, and handling backend systems, so I can efficiently trace errors and stabilize the code. I can start immediately and deliver the first round of fixes quickly. Let me know if you can share the repo and logs.
₹250 INR in 40 days
0.0
0.0

Hello, I am interested in contribute in solving the issues related to this project. I have experience in different programming language, like C/C++, Java or Python. We can discuss details in chat.
₹250 INR in 30 days
0.0
0.0

Hello, I am Onur Baran Yılmaz, a senior Computer Science student at Dokuz Eylül University with over 4 years of experience in C and Linux systems. I specialize in low-level systems programming and have a strong track record of building and debugging complex C codebases. I can handle the debugging, refactoring, and documentation of your project using GDB and Valgrind to ensure a leak-free, stable execution. Relevant projects I have developed: QTemp: A custom template engine written in C from scratch, involving complex lexing, parsing, and memory management ManoMachine Emulator: A C/C++ low-level systems emulator that simulates CPU architecture and control logic. PySysCheck: A tool that uses Python and Linux system calls to verify hardware integrity, similar to the helper scripts in your repo. I follow a disciplined workflow: compiling with -Wall -Wextra, performing deep-trace analysis with GDB, and verifying memory safety with Valgrind. I will provide the updated source files, a detailed change-log, and unit tests to ensure the fixes are permanent. I am ready to review the project tree and crash logs immediately. Looking forward to your response.
₹200 INR in 40 days
0.0
0.0

As a long-time GCC expert, I have encountered many such problems. It's easy to modify the results and remove the warning, but code modification should not be any deviation from the initial logic. The bigger the code project, the more difficult it becomes for us. Even if it is a large-scale project, overall composition analysis should be given priority. If you have a code configuration diagram, please attach it. This will save me a lot of time on analysis. Execution Plan: - Code composition analysis - Reproduction of reported errors - Code modifications - Check the resulting code - Documentation of changes This process will be completed within your expected time period. I hope it works for you. Best regards
₹275 INR in 40 days
0.0
0.0

Asansol, India
Member since May 3, 2026
₹100-400 INR / hour
$10-65 USD
₹75000-150000 INR
$8-15 USD / hour
₹100-400 INR / hour
$250-750 USD
$10-30 CAD
€8-30 EUR
₹150000-250000 INR
$30-250 NZD
₹12500-37500 INR
$10-50 USD
₹37500-75000 INR
$750-1500 USD
$30-250 AUD
$250-750 CAD
$250-750 AUD
$10-30 USD / hour
£10-15 GBP / hour
$250-750 USD
₹750-1250 INR / hour