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Checker
Component programs checkergcc  +
Computer languages C  +
Full description 'checker' can help find bugs that standard'checker' can help find bugs that standard tools cannot always find. The best example is memory leaks. A memory leak is a zone of memory, allocated with malloc that is not used anymore. So the memory allocated is lost. This means you program needs more memory and runs slower, since your OS might have to start swapping. It detects bad memory accesses such as: reading uninitialized memory, writing in a freed zone, writing or reading outside of a memory block, and using NULL pointers. This is particularly useful for big programs with many functions. Checker maintains bitmaps to keep track of the status of each byte of memory. The status can be writable, readable, both, or none. When memory is allocated, the new memory becomes write-only: you are not allowed to read it because it has not been initialized. But when you you write to this new block, those bytes become readable and writable. When the block is freed, the bytes become unreadable and unwritable. Red zones are unreadable and unwritable memory, so that each access to a red zone produces a warning. This project was a GNU package. It has since been decommissioned and is no longer developed.decommissioned and is no longer developed.
Homepage URL http://www.gnu.org/software/checker/  +
Is GNU false  +
Keywords memory  + , malloc  + , checker  + , runtime  + , memory leak  + , checking  + , errors  +
Last review by Janet Casey +
Last review date 15 October 2009  +
License GPLv2 +
License verified by Janet Casey  +
License verified date 1 March 2001  +
Name checker  +
Prerequisite description gcc 2.8.1  + , gcc  +
Prerequisite kind Required to use  + , Required to build  +
Real name Ben Pfaff  +
Related projects Halloc + , Memtest86 + , Memwatch +
Revisionid 1,929  +
Revisiontimestamp 12 April 2011 09:04:03  +
Revisionuser User:WikiSysop +
Role Maintainer  + , Contributor  +
Short description Finds memory errors at runtime  +
Software-development debugging  +
Submitted by Database conversion +
Submitted date 1 April 2011  +
Use software-development  +
User level none  +
Version comment 0.9.9.1 stable released 2002-08-24
Version date 24 August 2002  +
Version identifier 0.9.9.1  +
Version status stable  +
Has queryThis property is a special property in this wiki. Checker + , Checker + , Checker + , Checker + , Checker + , Checker + , Checker + , Checker + , Checker +
Modification dateThis property is a special property in this wiki. 1 August 2014 21:13:27  +
Page has default formThis property is a special property in this wiki. Entry  +
Has subobjectThis property is a special property in this wiki. Checker + , Checker + , Checker + , Checker + , Checker +
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