[RQt-devel] regressions

[Michael Lawrence]

Thanks, this should be fixed. Smoke uses negative indices for ambiguous
(overloaded) methods, which were happening in constructors. Just had to
check for that.

On Tue, Mar 2, 2010 at 9:08 PM, Deepayan Sarkar
<deepayan.sarkar at gmail.com>wrote:

> On Mon, Mar 1, 2010 at 2:54 PM, Michael Lawrence
> <lawrence.michael at gene.com> wrote:
>
> >> > Qt$QRectF(0, 0, 100, 100) ## or qrect(0, 0, 100, 100)
> >> Error in assign(enum, structure(enums[enum], class = "QtEnum"), env) :
> >>  attempt to use zero-length variable name
> >>
> >
> > That sucks, because I don't. Maybe a 4.5 vs 4.6 issue? Could you look
> into
> > the qenums code and try to catch where it is reporting an empty string
> for
> > an enum name? If you need help finding your way through the code, just
> let
> > me know.
> > Thanks for doing all the grunt work testing here. Sorry I have not been
> > taking the time to test things. Hopefully the demo directory will come to
> > represent a nice set of tests. Also, Qt itself has tests which we could
> > translate to R.
>
> I no longer get the error reproducibly, but I do get (two types of)
> errors intermittently. I've tracked down the problem to
>
> QHash<const char *, int> SmokeClass::createEnumValuesMap() const {
>
> and specifically the loop
>
>  for (int i = methmin; i <= methmax; i++) {
>    Smoke::Method m = _smoke->methods[_smoke->methodMaps[i].method];
>    if ((m.flags & Smoke::mf_ctor))
>      continue; // constructors are capitalized, so can be mixed-in
>    if ((m.flags & Smoke::mf_enum) == 0)
>      break;
>    (*_c->classFn)(m.method, 0, stack);
>    values[_smoke->methodNames[m.name]] = stack[0].s_enum;
>  }
>
> but have not gone any further yet.
>
> When I do
>
> $ Rscript -e "require(qtbase); Qt\$QRectF"
>
> I get three possible outputs:
>
> (1) Everything is; The return value has values.size() == 0
>
> (2) Error: return value has values.size() == 1, leading to
>
> Error in assign(enum, structure(enums[enum], class = "QtEnum"), env) :
>  attempt to use zero-length variable name
> Calls: <Anonymous> -> qsmokeClass -> assign
> Execution halted
>
> (3) Segfault inside the loop:
>
>  *** caught segfault ***
> address 0x20, cause 'memory not mapped'
>
> Traceback:
>  1: .Call(qt_qenums, x)
>  2: qenums(cl)
>  3: qsmokeClass(lib, classes[[classAlias]])
>  4: function () {    class <- qsmokeClass(lib, classes[[classAlias]])
>  rm(list = classAlias, envir = lib)    assign(classAlias, class, lib)
>   lockBinding(classAlias, lib)    class}()
> aborting ...
> Segmentation fault
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