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检索条件"主题词=Software testing and debugging"

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On-the-Fly Load Data Value Tracing in Multicores

On-the-Fly Load Data Value Tracing in Multicores

引用

International Conference on Compliers, Architectures, and Synthesis of Embedded Systems (CASES)

作者： Ponugoti, Mounika Tewar, Amrish K. Milenkovic, Aleksandar Univ Alabama Dept Elect & Comp Engn 301 Sparkman Dr Huntsville AL 35899 USA

ISBN: (纸本)9781450344821

software testing and debugging of modern multicore-based embedded systems is a challenging proposition because of growing hardware and software complexity, increased integration, and tightening time-to-market. To find more bugs faster, software developers of real-time embedded systems increasingly rely on on-chip trace and debug resources, including hefty on-chip buffers and wide trace ports. However, these resources often offer limited visibility of the system, increase the system cost, and do not scale well with a growing number of cores. This paper introduces mlvCFiat, a hardware/software mechanism for capturing and filtering load data value traces in multicores. It relies on first access tracking in data caches and equivalent modules in the software debugger to significantly reduce the number of trace events streamed out of the target platform. Our experimental evaluation explores the effectiveness of the proposed technique as a function of cache sizes, encoding mechanism, and the number of cores. The results show that mlvCFiat significantly reduces the total trace port bandwidth. The improvements relative to the existing Nexus-like load data value tracing range from 15 to 33 times for a single core and from 14 to 20 times for an octa core.

关键词： Real-time embedded systems Multicores software testing and debugging Program Tracing

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ARCHIE: A User-Focused Framework for testing Augmented Reality Applications in the Wild 27

ARCHIE: A User-Focused Framework for Testing Augmented Reali...

引用

27th IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Lehman, Sarah M. Ling, Haibin Tan, Chiu C. Temple Univ Philadelphia PA 19122 USA SUNY Stony Brook Stony Brook NY 11794 USA

ISBN: (纸本)9781728156088

In this paper, we present ARCHIE, a framework for testing augmented reality applications in the wild. ARCHIE collects user feedback and system state data in situ to help developers identify and debug issues important to testers. It also supports testing of multiple application versions (called "profiles") in a single evaluation session, prioritizing those versions which the tester finds more appealing. To evaluate ARCHIE, we implemented four distinct test case applications and used these applications to examine the performance overhead and context switching cost of incorporating our framework into a pre-existing code base. With these, we demonstrate that ARCHIE provides no significant overhead for AR applications, and introduces at most 2% processing overhead when switching among large groups of testable profiles.

关键词： software and its engineering software testing and debugging Human-centered computing User interface toolkits Human-centered computing Mixed / augmented reality

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Sorting and Transforming Program Repair Ingredients via Deep Learning Code Similarities 26

Sorting and Transforming Program Repair Ingredients via Deep...

引用

26th IEEE International Conference on software Analysis, Evolution and Reengineering (SANER)

作者： White, Martin Tufano, Michele Martinez, Matias Monperrus, Martin Poshyvanyk, Denys Coll William & Mary Williamsburg VA 23185 USA Univ Polytech Hauts De France Valenciennes France KTH Royal Inst Technol Stockholm Sweden

ISBN: (纸本)9781728105918

In the field of automated program repair, the redundancy assumption claims large programs contain the seeds of their own repair. However, most redundancy-based program repair techniques do not reason about the repair ingredients-the code that is reused to craft a patch. We aim to reason about the repair ingredients by using code similarities to prioritize and transform statements in a codebase for patch generation. Our approach, DeepRepair, relies on deep learning to reason about code similarities. Code fragments at well-defined levels of granularity in a codebase can be sorted according to their similarity to suspicious elements (i.e., code elements that contain suspicious statements) and statements can be transformed by mapping out-of-scope identifiers to similar identifiers in scope. We examined these new search strategies for patch generation with respect to effectiveness from the viewpoint of a software maintainer. Our comparative experiments were executed on six open-source Java projects including 374 buggy program revisions and consisted of 19,949 trials spanning 2,616 days of computation time. Deep-Repair's search strategy using code similarities generally found compilable ingredients faster than the baseline, jGenProg, but this improvement neither yielded test-adequate patches in fewer attempts (on average) nor found significantly more patches (on average) than the baseline. Although the patch counts were not statistically different, there were notable differences between the nature of DeepRepair patches and jGenProg patches. The results show that our learning-based approach finds patches that cannot be found by existing redundancy-based repair techniques.

关键词： software testing and debugging program repair deep learning neural networks code clones language models

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Pinso: Precise Isolation of Concurrency Bugs via Delta Triaging 30

Pinso: Precise Isolation of Concurrency Bugs via Delta Triag...

引用

30th IEEE International Conference on software Maintenance and Evolution (ICSME)

作者： Liu, Bo Qi, Zhengwei Wang, Bin Ma, Ruhui Shanghai Jiao Tong Univ Shanghai Key Lab Scalable Comp & Syst Dept Comp Sci & Engn Shanghai 200030 Peoples R China Shanghai Jiao Tong Univ Shanghai Key Lab Scalable Comp & Syst Sch Software Shanghai 200030 Peoples R China

ISBN: (纸本)9780769553030

Concurrent programs are known to be difficult to test and maintain. These programs often fail because of concurrency bugs caused by non-deterministic interleavings among shared memory accesses. Even though a concurrency bug can be detected, it is still hard to isolate the root cause of the bug, due to the challenge in understanding the complex thread interleavings or schedules. In this paper, we propose a practical and precise isolation technique for concurrent bugs called Pinso that seeks to exploit the non-deterministic nature of concurrency bugs and accurately find the root causes of program error, to further help developers maintain concurrent programs. Pinso profiles runtime inter-thread interleavings based on a set of summarized memory access patterns, and then, isolates suspicious interleaving patterns in the triaging phase. Using a filtration-oriented scheduler, Pinso effectively eliminates false positives that are irrelevant to the bug. We evaluate Pinso with 11 real-world concurrency bugs, including single-and multi-variable violation, from sever/desktop concurrent applications (MySQL, Apache, and several others). Experiments indicate that our tool accurately isolates the root causes of all the bugs.

关键词： software testing and debugging Concurrency bug

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A Toolchain to Verify the Parallelization of OmpSs-2 Applications 26th

A Toolchain to Verify the Parallelization of OmpSs-2 Applica...

引用

26th International Conference on Parallel and Distributed Computing (Euro-Par)

作者： Economo, Simone Royuela, Sara Ayguade, Eduard Beltran, Vicenc Barcelona Supercomp Ctr BSC Barcelona Spain Sapienza Univ Roma DIAG Antonio Ruberti Rome Italy

ISBN: (纸本)9783030576752;9783030576745

Programming models for task-based parallelization based on compile-time directives are very effective at uncovering the parallelism available in HPC applications. Despite that, the process of correctly annotating complex applications is error-prone and may hinder the general adoption of these models. In this paper, we target the OmpSs-2 programming model and present a novel toolchain able to detect parallelization errors coming from non-compliant OmpSs-2 applications. Our toolchain verifies the compliance with the OmpSs-2 programming model using local task analysis to deal with each task separately, and structural induction to extend the analysis to the whole program. To improve the effectiveness of our tools, we also introduce some ad-hoc verification annotations, which can be used manually or automatically to disable the analysis of specific code regions. Experiments run on a sample of representative kernels and applications show that our toolchain can be successfully used to verify the parallelization of complex real-world applications.

关键词： Synchronization software testing and debugging Parallel programming

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debugging Flaky Tests on Web Applications 15

Debugging Flaky Tests on Web Applications

引用

15th International Conference on Web Information Systems and Technologies (WEBIST)

作者： Moran, Jesus Augusto, Cristian Bertolino, Antonia de la Riva, Claudio Tuya, Javier Univ Oviedo Comp Sci Dept Gijon Spain CNR ISTI CNR Pisa Italy

ISBN: (纸本)9789897583865

testing web applications is a challenging practice because it involves managing asynchronous requests between clients and servers, the integration of heterogeneous technologies, and concurrent accesses to the resources. Therefore, rerunning the test cases of these applications under the same conditions is difficult as one test case can be executed in many different ways according to several environmental factors like memory, screen size or network. Moreover, some of these test cases could be flaky, i.e., due to environmental factors the test outcome can vary even though the application did not change. Understanding which factors are the root cause of flakiness is very important for web developers to both prevent and fix flakiness. This paper introduces a technique to locate the root causes of flakiness based on a characterization of the different environmental factors that are not controlled during the testing of web applications. The root cause of flakiness is located by a spectrum-based localization technique that analyses the execution of the same flaky test under different environmental factors that can trigger the flakiness. The technique is illustrated on an educational web platform named FullTeaching.

关键词： software testing and debugging Spectrum-based Localization Web Applications Test Flakiness

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Poster: debugging Inputs 42

Poster: Debugging Inputs

引用

42nd ACM/IEEE International Conference on software Engineering - Companion Proceedings (ICSE-Companion)

作者： Kirschner, Lukas Soremekun, Ezekiel Zeller, Andreas CISPA Helmholtz Ctr Informat Secur Saarbrucken Germany

ISBN: (纸本)9781450371223

Program failures are often caused by invalid inputs, for instance due to input corruption. To obtain the passing input, one needs to debug the data. In this paper we present a generic technique called ddmax that (1) identifies which parts of the input data prevent processing, and (2) recovers as much of the (valuable) input data as possible. To the best of our knowledge, ddmax is the first approach that fixes faults in the input data without requiring program analysis. In our evaluation, ddmax repaired about 69% of input files and recovered about 78% of data within one minute per input.

关键词： delta debugging input repair software testing and debugging

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Neutrality and Epistasis in Program Space 4

Neutrality and Epistasis in Program Space

引用

ACM/IEEE 4th International Genetic Improvement Workshop (GI at ICSE)

作者： Renzullo, Joseph Weimer, Westley Moses, Melanie Forrest, Stephanie Arizona State Univ Tempe AZ 85287 USA Univ Michigan Ann Arbor MI 48109 USA Univ New Mexico Albuquerque NM 87131 USA

ISBN: (纸本)9781450357531

Neutral networks in biology often contain diverse solutions with equal fitness, which can be useful when environments (requirements) change over time. In this paper, we present a method for studying neutral networks in software. In these networks, we find multiple solutions to held-out test cases (latent bugs), suggesting that neutral software networks also exhibit relevant diversity. We also observe instances of positive epistasis between random mutations, i.e. interactions that collectively increase fitness. Positive epistasis is rare as a fraction of the total search space but significant as a fraction of the objective space: 9% of the repairs we found to look (and 4.63% across all programs analyzed) were produced by positive interactions between mutations. Further, the majority (62.50%) of unique repairs are instances of positive epistasis.

关键词： software evolution Network science Biological networks software testing and debugging Automated software engineering

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PreciseBugCollector: Extensible, Executable and Precise Bug-fix Collection 38

PreciseBugCollector: Extensible, Executable and Precise Bug-...

引用

38th IEEE/ACM International Conference on Automated software Engineering (ASE)

作者： He, Ye Chen, Zimin Le Goues, Claire Carnegie Mellon Univ Pittsburgh PA 15213 USA KTH Royal Inst Technol Stockholm Sweden

ISBN: (纸本)9798350329964

Bug datasets are vital for enabling deep learning techniques to address software maintenance tasks related to bugs. However, existing bug datasets suffer from precise and scale limitations: they are either small-scale but precise with manual validation or large-scale but imprecise with simple commit message processing. In this paper, we introduce PreciseBugCollector, a precise, multi-language bug collection approach that overcomes these two limitations. PreciseBugCollector is based on two novel components: a) A bug tracker to map the codebase repositories with external bug repositories to trace bug type information, and b) A bug injector to generate project-specific bugs by injecting noise into the correct codebases and then executing them against their test suites to obtain test failure messages. We implement PreciseBugCollector against three sources: 1) A bug tracker that links to the national vulnerability data set (NVD) to collect general-wise vulnerabilities, 2) A bug tracker that links to OSS-Fuzz to collect general-wise bugs, and 3) A bug injector based on 16 injection rules to generate project-wise bugs. To date, PreciseBugCollector comprises 1 057 818 bugs extracted from 2 968 open-source projects. Of these, 12 602 bugs are sourced from bug repositories (NVD and OSS-Fuzz), while the remaining 1 045 216 project-specific bugs are generated by the bug injector. Considering the challenge objectives, we argue that a bug injection approach is highly valuable for the industrial setting, since project-specific bugs align with domain knowledge, share the same codebase, and adhere to the coding style employed in industrial projects.

关键词： Bug datasets Program repair software testing and debugging

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software Test Case Minimization Using Modified Firefly Technique 9th

Software Test Case Minimization Using Modified Firefly Techn...

引用

9th International Congress on Information and Communication Technology (ICICT)

作者： Sobuj, Md Shazzad Ali Rizwan, Syed Akhond, Mostafijur Rahman Jashore Univ Sci & Technol Jashore 7400 Bangladesh

ISBN: (纸本)9789819735587;9789819735594

The step of software engineering that requires the utmost time and resources is software testing. Techniques for test case reduction are used to condense the test suite, saving time and resources in the process. The basic goal of test case reduction is to get rid of useless test cases while still ensuring that the code being tested is sufficiently covered by the test suite. In this study, a model has been proposed to cut down on complexity and test cases. We have employed a moderated nature-inspired meta-heuristic algorithm called the Firefly Algorithm, to identify essential strings of test cases and eliminate irrelevant test instances. In our research, we have used some synthetic models and succeeded to reduce 36.17% of test cases.

关键词： software testing and debugging software verification and validation software defect analysis software and its engineering

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