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[[!meta copyright="Copyright © 2011, 2012, 2013 Free Software Foundation,
Inc."]]
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[[!tag open_issue_documentation]]
[[!toc]]
# IRC, freenode, #hurd, 2011-12-04
<mcsim> defpager uses it's own dynamic memory allocator, which uses
vm_allocate/vm_deallocate as backing store? Am I able to use duma in such
case?
<braunr> you will have to adapt it
<braunr> but it's already designed to handle custom allocators
<braunr> iirc
<braunr> btw, are there special flags for that memory which the pager
allocates ?
<braunr> e.g. to use wired memory ?
<mcsim> yes, wired memory
<braunr> you'll have to change that in duma then
<braunr> but apart from such details, it should be straightforward
<antrik> braunr: I have no idea about duma; but if you think it's a useful
tool, please add it to open_issues/code_analysis.mdwn
<antrik> (I guess we should have a "proper" page listing useful debugging
tools...)
## IRC, freenode, #hurd, 2012-09-03
<mcsim> hello. Has anyone tried some memory debugging tools like duma or
dmalloc with hurd?
<braunr> mcsim: yes, but i couldn't
<braunr> i tried duma, and it crashes, probably because of cthreads :)
# Static Analysis
## IRC, freenode, #hurd, 2012-09-08
<mcsim> hello. What static analyzer would you suggest (probably you have
tried it for hurd already)?
<braunr> mcsim: if you find some good free static analyzer, let me know :)
<pinotree> a simple one is cppcheck
<mcsim> braunr: I'm choosing now between splint and adlint
## IRC, freenode, #hurd, 2013-10-17
<teythoon> whoa, llvm kinda works, enough to make scan-build work :)
<braunr> teythoon: what is scan-build ?
<teythoon> braunr: clangs static analyzer
<braunr> ok
<teythoon> I'm doing a full build of the hurd using it, I will post the
report once it is finished
<teythoon> this will help spot many problems
<teythoon> well, here are the scan-build reports I got so far:
https://teythoon.cryptobitch.de/qa/2013-10-17/scan-build/
<teythoon> I noticed it finds problems in mig generated code, so there are
probably lot's of duplictaes for those kind of problems
<pinotree> what's a... better one to look at?
<teythoon> it's also good at spotting error handling errors, and can spot
leaks sometimes
<teythoon> hm
<teythoon>
https://teythoon.cryptobitch.de/qa/2013-10-17/scan-build/report-yVBHO1.html
<braunr> that's minor, the device always exist
<braunr> but that's still ugly
<teythoon>
https://teythoon.cryptobitch.de/qa/2013-10-17/scan-build/report-MtgWSa.html
<teythoon>
https://teythoon.cryptobitch.de/qa/2013-10-17/scan-build/report-QdsZIm.html
<teythoon> this could be important:
https://teythoon.cryptobitch.de/qa/2013-10-17/scan-build/report-PDMEbk.html
<teythoon> this is the issue it finds in mig generated server stubs:
https://teythoon.cryptobitch.de/qa/2013-10-17/scan-build/report-iU3soc.html
<braunr> this one is #if TypeCheck1
<braunr> the libports one looks weird indeed
<teythoon> but TypeCheck is 1 (the tooltip shows macro expansion)
<teythoon> it is defined in line 23
<braunr> oh
<teythoon> hmmm... clang does not support nested functions, that will limit
its usefulness for us :/
<braunr> yes
<braunr> one more reason not to use them
### IRC, freenode, #hurd, 2013-10-18
<teythoon> more complete, now with index:
https://teythoon.cryptobitch.de/qa/2013-10-17/scan-build-2/
# Leak Detection
See *Leak Detection* on [[boehm_gc]].
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