Patent · US Active

Method and system for detecting runtime defects in a program by comparing correct and incorrect runs

US7530056B1 · kind B1 · utility

16Cited by

9References

2Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Yaakov Yaari · Haifa, IL
Andre Heilper · Haifa, IL

Key dates

Filing date	Mar 31, 2008
Grant date	May 5, 2009
Priority date	—
Expiry date	Mar 31, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG06F11/366
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The invention provides an improved method and method for locating the origin of runtime defect in software programs. A differential debugging technique may be implemented to locate the diversion point where two programs start to behave differently. In one approach, the method generally involves running the two programs and generating respective control flow diagrams via a static code analyzer or the like. Tracer and supervisor modules may be used to replace addresses in registers with symbols and/or position-independent offsets, and to locate where differences in the register states occur.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.