On 15.07.2014 17:45, Martin Zenzes wrote: > Hi, > > playing around a little bit, reading into this nice codebase of > LLVM/clang and talking to Matthias. Concerned with this horrible state > of gccxml -- no offense -- but it does not make sense to force it to > cross-compile if it is going to be replaced sooner than later. So: > > What does a replacement for gccxml in typelib have to provide: > - the full qualifying names of all types defined in a given set of > header-files > - their memory layout: offset+type of all members, the sizeof the type > itself > right? Jup, plus name of the member itself ;-P > > Nice would be: > - bail out if types use too fancy features, like virtual functions or > dynamic members (except some whitelisted special cases) Actually this is needed, as typlelib can't deal with any class, that has a virtual table. > > The proof-of-concept-level stuff I have so far is living in > $WIESE/temp/mzenzes/clang-typelib.bare but it would make more sense to > push it out into the internet -- should i use my private github account > for things like this? Sound like a good idea. > > -- > > > The second point can be done using "clang -fdump-record-layouts" (see > http://lists.cs.uiuc.edu/pipermail/cfe-dev/2014-July/037778.html. It > results in an output like this: > > 0 | struct base::JointState > 0 | double position > 8 | float speed > 12 | float effort > 16 | float raw > | [sizeof=24, dsize=20, align=8 > | nvsize=20, nvalign=8] > > for the first point (and third) "clang-check -ast-list" could be used -- > but it prints too much. So a small clang-tool with added filtering might > come in handy? > > Greetings > Martin > > ps: sorry if this is posted twice... my mail client?
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