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Lecture 21: Dynamic Information Flow Control

Lecture 21: Dynamic Information Flow Control

Lecture 21: Dynamic Information Flow Control. CS 181S November 12, 2018. Information flow policies. Can flow to: Alice. Doc. Automatic deduction of policies!. computation. Can flow to: Alice. Can flow to: Alice. Doc’’. Doc’. Labels represent policies.

By azura
(343 views)

Effective Typestate Verification in the Presence of Aliasing

Effective Typestate Verification in the Presence of Aliasing

Effective Typestate Verification in the Presence of Aliasing. Stephen Fink Eran Yahav Nurit Dor G. Ramalingam Emmanuel Geay. Motivation. close(). getInputStream() getOutputStream(). init. connected. closed. connect(). close(). err. getInputStream() getOutputStream().

By hugh
(93 views)

Charm elliptic flow at RHIC

Charm elliptic flow at RHIC

Charm elliptic flow at RHIC. Charm collective flow and properties of sQGP The AMPT model with string melting Implementation of charm particles transverse momentum spectra elliptic flow of charm particles Summary. B. Zhang 1 , L.W. Chen 2 , C.M. Ko 3

By minh
(131 views)

Effective Typestate Verification in the Presence of Aliasing

Effective Typestate Verification in the Presence of Aliasing

Effective Typestate Verification in the Presence of Aliasing. Stephen Fink Eran Yahav Nurit Dor G. Ramalingam Emmanuel Geay. Motivation. close(). getInputStream() getOutputStream(). init. connected. closed. connect(). close(). err. getInputStream() getOutputStream().

By chaim
(98 views)

Pointer Analysis

Pointer Analysis

Pointer Analysis. Pointer Analysis. Outline: What is pointer analysis Intraprocedural pointer analysis Interprocedural pointer analysis Andersen and Steensgaard New Directions. Pointer and Alias Analysis. Aliases : two expressions that denote the same memory location.

By elga
(413 views)

Flow insensitivity and imprecision

Flow insensitivity and imprecision

Flow insensitivity and imprecision. If you ignore flow, then you lose precision. main() { x := &y; ... x := &z; }. Flow insensitive analysis tells us that x may point to z here!. But, insensitivity may alleviate two bottlenecks: (1) space : mem exhausted by large programs

By duff
(94 views)

Flow insensitive pointer analysis: fixed

Flow insensitive pointer analysis: fixed

p. t. l. S1. S2. Flow insensitive pointer analysis: fixed. This is Andersen’s algorithm ’94. Final result. S1: l := new Cons. Iter 1. Iter 2. Iter 3. p := l. p. t. p. t. l. S1. l. S1. S2. p. l. S1. S2. S2: t := new Cons. p. t. p. t. l. S1. t. S2. l. S1. L2. l.

By mahlah
(59 views)

Alias Analysis

Alias Analysis

Alias Analysis. 2006 년 5 월 1 일 ADVANCED COMPILER 이정옥. p. n. 4. What Is Alias Analysis. Determination of Storage Locations That May Be Accessed in Two or More Ways. main() { int *p; int n; p=&n; n=4 printf(“%d\n”,*p); }. simple pointer aliasing in C.

By pomona
(96 views)

Client-Driven Pointer Analysis

Client-Driven Pointer Analysis

T H E U N I V E R S I T Y O F T E X A S. A T A U S T I N. Client-Driven Pointer Analysis. Samuel Z. Guyer Calvin Lin June 2003. Output. Errors. CIFI. Context & Flow Insensitive. CIFS. Flow Sensitive. CSFS. Context & Flow Sensitive. Using Pointer Analysis.

By edan
(170 views)

Source Analysis for Security

Source Analysis for Security

Source Analysis for Security. Trent Jaeger March 29, 2004. Example 1. Example 2. get_free_buffer (struct stripe_head *sh, …) { struct buffer_head *bh; unsigned long flags; save_flags(flags); cli(); if ((bh = sh->buffer_pool) == NULL) return NULL; sh->buffer_pool – bh->b_next;

By tara
(67 views)

Pointer analysis

Pointer analysis

Pointer analysis. Pointer Analysis. Outline: What is pointer analysis Intraprocedural pointer analysis Interprocedural pointer analysis Andersen and Steensgaard. Pointer and Alias Analysis. Aliases: two expressions that denote the same memory location. Aliases are introduced by: pointers

By damia
(268 views)

Type Qualifiers

Type Qualifiers

Type Qualifiers. CS 6340. Even after large, extensive testing efforts, commercial software is shipped riddled with errors ("bugs"). -- PITAC Report to the President, February 24, 1999.

By baris
(134 views)

Pointer Analysis.

Pointer Analysis.

Rupesh Nasre. Advisor: Prof R Govindarajan. Apr 05, 2008. Pointer Analysis. Outline. Motivation and Introduction. Related Work. Preliminary Results. Research Directions. Pointer analysis is the mechanism of statically finding out possible run-time values of a pointer.

By walker
(131 views)

Context-Sensitivity Analysis Literature Review

Context-Sensitivity Analysis Literature Review

Context-Sensitivity Analysis Literature Review. by José Nelson Amaral (amaral@cs.ualberta.ca) University of Alberta. Dimensions of Pointer Analysis. Unification-based × Insertion-based Flow-sensitive × flow-insensitive Field-sensitive × field-insensitive × field-based

By hadley-rutledge
(132 views)

Speeding Up Dataflow Analysis Using Flow-Insensitive Pointer Analysis

Speeding Up Dataflow Analysis Using Flow-Insensitive Pointer Analysis

Speeding Up Dataflow Analysis Using Flow-Insensitive Pointer Analysis. Stephen Adams, Tom Ball, Manuvir Das Sorin Lerner, Mark Seigle Westley Weimer. Microsoft Research University of Washington UC Berkeley. Motivation. Static analysis for program verification

By cathleen-leblanc
(136 views)

Speeding Up Dataflow Analysis Using Flow-Insensitive Pointer Analysis

Speeding Up Dataflow Analysis Using Flow-Insensitive Pointer Analysis

Speeding Up Dataflow Analysis Using Flow-Insensitive Pointer Analysis. Stephen Adams, Tom Ball, Manuvir Das Sorin Lerner, Mark Seigle Westley Weimer. Microsoft Research University of Washington UC Berkeley. Motivation. Static analysis for program verification

By nigel-phelps
(81 views)

Type-State Checking using Dataflow Analysis

Type-State Checking using Dataflow Analysis

Type-State Checking using Dataflow Analysis. CS 6340. Motivation. close(). getInputStream() getOutputStream(). init. connected. closed. connect(). close(). err. getInputStream() getOutputStream(). getInputStream() getOutputStream(). *. Typestate. Application Trends

By arden-hess
(119 views)

safe

safe

Eran Yahav , Stephen Fink Satish Chandra, Nurit Dor , Emmanuel Geay , Alexey Loginov , Ganesan Ramalingam , Sharon Shoham , Greta Yorsh. safe. Tools. SAFE S calable A nd F lexible E rror-detection and verification SAFE Mining SALSA

By hall-cobb
(139 views)

Source Analysis for Security

Source Analysis for Security

Source Analysis for Security. Trent Jaeger March 29, 2004. Example 1. Example 2. get_free_buffer (struct stripe_head *sh, …) { struct buffer_head *bh; unsigned long flags; save_flags(flags); cli(); if ((bh = sh->buffer_pool) == NULL) return NULL; sh->buffer_pool – bh->b_next;

By rudyard-dale
(50 views)

CS527: Advanced Topics in Software Engineering (Software Testing and Analysis)

CS527: Advanced Topics in Software Engineering (Software Testing and Analysis)

CS527: Advanced Topics in Software Engineering (Software Testing and Analysis). Darko Marinov September 11, 2008. Schedule. Aug 26 & 28: Intro, reading/writing papers Sep 2: Random testing Sep 4: Refactoring (Jeff Overbey) Sep 9: Testing refactoring engines

By kelly-shelton
(104 views)

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