66:
1082:(2010 Ultimate edition, 2012 Ultimate, 2013 Ultimate, and 2015 Enterprise edition) offers IntelliTrace reverse debugging for C#, Visual Basic .NET, and some other languages, but not C++. Reverse debuggers also exist for C, C++, Java, Python, Perl, and other languages. Some are open source; some are proprietary commercial software. Some reverse debuggers slow down the target by orders of magnitude, but the best reverse debuggers cause a slowdown of 2× or less. Reverse debugging is very useful for certain types of problems, but is still not commonly used yet.
1369:
1066:, also known as "software flight recording" or "program execution recording", captures application state changes and stores them to disk as each instruction in a program executes. The recording can then be replayed over and over, and interactively debugged to diagnose and resolve defects. Record and replay debugging is very useful for remote debugging and for resolving intermittent, non-deterministic, and other hard-to-reproduce defects.
223:
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925:(ISS), a technique that allows great power in its ability to halt when specific conditions are encountered, but which will typically be somewhat slower than executing the code directly on the appropriate (or the same) processor. Some debuggers offer two modes of operation, full or partial simulation, to limit this impact.
915:
other programs (the "target" program). The main use of a debugger is to run the target program under controlled conditions that permit the programmer to track its execution and monitor changes in computer resources that may indicate malfunctioning code. Typical debugging facilities include the
916:
ability to run or halt the target program at specific points, display the contents of memory, CPU registers or storage devices (such as disk drives), and modify memory or register contents in order to enter selected test data that might be a cause of faulty program execution.
1000:, and tracking the values of variables. Some debuggers have the ability to modify the program state while it is running. It may also be possible to continue execution at a different location in the program to bypass a crash or logical error.
1027:
are shown. Early microcomputers with disk-based storage often benefitted from the ability to diagnose and recover corrupted directory or registry data records, to "undelete" files marked as deleted, or to crack file password protection.
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Typically, debuggers offer a query processor, a symbol resolver, an expression interpreter, and a debug support interface at its top level. Debuggers also offer more sophisticated functions such as running a program
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makes it easier to write debugger software that runs on the same CPU as the software being debugged; such a CPU can execute the inner loops of the program under test at full speed, and still remain under debugger
1168:
allows an external hardware debugger to reprogram a system under test (for example, adding or removing instruction breakpoints). Many systems with such ISP support also have other hardware debug support.
1078:", also known as "historical debugging" or "backwards debugging". These debuggers make it possible to step a program's execution backwards in time. Various debuggers include this feature.
1485:
O'Callahan, Robert; Jones, Chris; Froyd, Nathan; Huey, Kyle; Noll, Albert; Partush, Nimrod (2017). "Engineering Record And Replay For
Deployability Extended Technical Report".
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are programs specifically designed to be cracked or debugged. These programs allow those with debuggers to practice their debugging ability without getting into legal trouble.
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Some debuggers operate on a single specific language while others can handle multiple languages transparently. For example, if the main target program is written in
871:
1233:. Some GUI debugger front-ends are designed to be compatible with a variety of CLI-only debuggers, while others are targeted at one specific debugger.
1229:(GUI) easier and more productive. This is the reason for visual front-ends, that allow users to monitor and control subservient CLI-only debuggers via
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971:(unless it also has online access to the original source code and can display the appropriate section of code from the assembly or compilation).
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947:. When the program "traps" or reaches a preset condition, the debugger typically shows the location in the original code if it is a
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1547:
Sanjeev Kumar
Aggarwal; M. Sarath Kumar (2003). "Debuggers for Programming Languages". In Y.N. Srikant; Priti Shankar (eds.).
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or invalid data. For example, the program might have tried to use an instruction not available on the current version of the
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Debugging is often used to illegally crack or pirate software, which is usually illegal even when done non-maliciously.
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Some of the most capable and popular debuggers implement only a simple command line interface (CLI)—often to maximize
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command set. Processors used in embedded systems typically have extensive JTAG debug support.
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debugger API used in a range of IDEs: Eclipse IDE (Java), Nodeclipse (JavaScript)
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Most modern microprocessors have at least one of these features in their
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The
Compiler Design Handbook: Optimizations and Machine Code Generation
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How
Debuggers Work: Algorithms, Data Structures, and Architecture
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932:" occurs when the program cannot normally continue because of a
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The code to be examined might alternatively be running on an
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Hardware support for single-stepping a program, such as the
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Some debuggers also incorporate memory protection to avoid
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are popular extensions to debugger engines that provide
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Computer program used to test and debug other programs
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access to hardware debug interfaces such as those on
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247:. Unsourced material may be challenged and removed.
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1090:In addition to the features of reverse debuggers,
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1610:OpenRCE: Various Debugger Resources and Plug-ins
1159:Popek and Goldberg virtualization requirements
1058:
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154:introducing citations to additional sources
1031:Most mainstream debugging engines, such as
53:Learn how and when to remove these messages
872:
858:
1490:
1074:Some debuggers include a feature called "
325:Learn how and when to remove this message
307:Learn how and when to remove this message
110:Learn how and when to remove this message
1085:
883:
144:Relevant discussion may be found on the
73:This article includes a list of general
1508:"Why is reverse debugging rarely used?"
1623:
1399:List of tools for static code analysis
1216:
1097:
940:or attempted to access unavailable or
826:Electrical and electronics engineering
1532:Aggarwal and Kumar 2003, pp. 299-301.
1130:. This may be extremely important in
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245:adding citations to reliable sources
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1171:Hardware support for code and data
957:integrated development environments
13:
1157:An instruction set that meets the
79:it lacks sufficient corresponding
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752:Standards and bodies of knowledge
34:This article has multiple issues.
1475:Aggarwal and Kumar, pp. 307-312.
1466:Aggarwal and Kumar 2003, p. 301.
1367:
1296:Microsoft Visual Studio Debugger
1259:Some widely used debuggers are:
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137:relies largely or entirely on a
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64:
23:
1266:, formerly known as Allinea DDT
844:Outline of software development
232:needs additional citations for
42:or discuss these issues on the
1570:Jonathan B. Rosenberg (1996).
1526:
1506:Philip Claßen; Undo Software.
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1138:Hardware support for debugging
1055:, and visualization features.
1:
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7:
1605:Debugging Tools for Windows
1457:Aggarwal and Kumar, p. 302.
1375:Computer programming portal
1360:
1335:Dynamic debugging technique
1064:Record and replay debugging
1059:Record and replay debugging
974:
10:
1657:
1539:
1512:Programmers Stack Exchange
1252:
1237:Ethical or legal debugging
1146:to make debugging easier:
607:Software quality assurance
1013:digital rights management
967:it shows the line in the
965:machine-language debugger
922:instruction set simulator
1617:MSDN, Visual Studio 2015
1231:graphical user interface
1227:graphical user interface
1189:processors or using the
1039:, provide console-based
1025:instruction path lengths
592:Configuration management
1551:. Boca Raton, Florida:
1384:Comparison of debuggers
1080:Microsoft Visual Studio
1041:command line interfaces
955:, commonly now seen in
816:Artificial intelligence
94:more precise citations.
1641:Utility software types
1341:On-line Debugging Tool
1132:transaction processing
892:
740:Infrastructure as code
586:Supporting disciplines
1580:John Wiley & Sons
1514:. Stack Exchange, Inc
1429:Rubber duck debugging
1419:Time travel debugging
1166:In-system programming
1092:time travel debugging
1086:Time Travel debugging
949:source-level debugger
887:
597:Deployment management
1555:. pp. 295–327.
1021:performance analyzer
417:Paradigms and models
346:Software development
241:improve this article
150:improve this article
1350:debuggers include:
1330:debuggers include:
1217:Debugger front-ends
1098:Language dependency
1045:Debugger front-ends
340:Part of a series on
1287:- the GNU debugger
1124:storage violations
961:low-level debugger
893:
735:Release automation
612:Project management
1562:978-0-8493-1240-3
1255:List of debuggers
1249:List of debuggers
1118:Memory protection
1108:assembly language
1076:reverse debugging
1070:Reverse debugging
1053:program animation
1005:software cracking
990:program animation
953:symbolic debugger
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139:single source
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1516:. Retrieved
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1177:page fault
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1106:but calls
998:breakpoint
810:Glossaries
400:Deployment
297:April 2008
267:newspapers
256:"Debugger"
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165:"Debugger"
75:references
39:improve it
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1553:CRC Press
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423:Agile
288:JSTOR
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635:ATDD
544:SAFe
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489:DSDM
260:news
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988:or
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