~/talks

Manuel Rigger

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who talks about the same things

titleconferencedate
Flexible and Expressive Typed Path Patterns for GQLOOPSLA 20252025-10-16
Defines FPPC — a formal type calculus for a core GQL fragment that adds property filters and imprecise (unknown) types, and statically flags queries that are…
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Fuzzing the PHP Interpreter via Dataflow FusionUSENIX Security '252025-08-13
FlowFusion is an automatic fuzzer that implements dataflow fusion by merging PHPT seed programs’ definitions and uses to create new, semantically richer tests…
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Finding Cross-rule Optimization Bugs in Datalog EnginesOOPSLA 20242024-10-20
Automated blackbox testing uses Incremental Rule Evaluation (IRE) to build Datalog programs rule by rule, evaluate each new rule in isolation as a reference…
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Detecting Transactional Bugs in Database Engines via Graph-Based Oracle ConstructionOSDI 20232023-07-10
A tool called TxCheck builds statement-dependency graphs via SQL-level instrumentation and uses transactional oracle construction to generate semantically…
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How to test software without writing testsIt Will Never Work in Theory (Online, April 2022)2022-04-27
Claims an automated tester called SQLancer that pairs random query generation (it reuses tools like SQLsmith) with a metamorphic oracle named ternary logic…
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SANRAZOR: Reducing Redundant Sanitizer Checks in C/C++ Programs15th USENIX Symposium on Operating Systems Design and Implementation (OSDI '21)2021-07-14
SanRazor is a tool that identifies and removes redundant sanitizer checks by combining dynamic coverage profiles with static data-dependency trees, instruments…
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SQLancer: Automatically Finding Bugs in Database Management SystemsSPLASH 2020 REBASE2020-11-16
SQLancer is an automated tester (Java/Maven, GitHub) that generates small databases and thousands of SQL queries and validates results with three concrete…
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Finding Bugs in Database Systems via Query PartitioningOOPSLA 20202020-11-15
Automated testing partitions a query into three cases — ϕ, NOT ϕ, and ϕ IS NULL — then recomposes them (using UNION ALL) and compares results; implemented as…
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Fast Linear Programming through Transprecision Computing on Small and Sparse DataOOPSLA 20202020-11-15
Analyzes ~500,000 simplex tableaux from Polly PPCG and HayStack and finds >99% of coefficients <9 bits, medians of 18 columns and 84% sparsity, with rare…
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SQLancer: Finding Logic Bugs in Database Management SystemsPercona Live Online 20202020-10-20
An automated SQL fuzzer called SQLancer generates large numbers of random SQL workloads using grammar-aware mutations and runs them against real DBMS binaries…
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