search for: rf_inherits

Thank you Luke. That is why I don't use Rf_inherits but INHERITS which does not allocate, provided in the email body. I cannot do similarly for S4 classes, thus asking for some API for that. On Fri, Nov 1, 2019 at 5:56 PM Tierney, Luke <luke-tierney at uiowa.edu> wrote: > > On Fri, 1 Nov 2019, Jan Gorecki wrote: > > > Dear R de...

On Fri, 1 Nov 2019, Jan Gorecki wrote: > Thank you Luke. > That is why I don't use Rf_inherits but INHERITS which does not > allocate, provided in the email body. Your definition can allocate because STING_ELT can allocate. getAttrib can GC in general. Currently it would not GC or allocate in this case, but this could change. You can't assume thread-safety for calls into the R API,...

Dear R developers, Motivated by discussion about checking inheritance of S3 and S4 objects (in head matrix/array topic) I would light to shed some light on a minor gap about that matter in R C API. Currently we are able to check inheritance for S3 class objects from C in a robust way (no allocation, thread safe). This is unfortunately not possible for S4 classes. I would kindly request new

...output below. I am not sure how to proceed from here (other than binary search with print statements). Any help would be appreciated. Thanks, Eric ==12589== Invalid read of size 1 ==12589== at 0x4C2F1B1: strcmp (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==12589== by 0x4F71AC1: Rf_inherits (in /usr/lib/R/lib/libR.so) ==12589== by 0x11AFED3A: dplyr::subset_visitor_vector(SEXPREC*) (subset_visitor_impl.h:51) ==12589== by 0x11AFF58C: dplyr::subset_visitor(SEXPREC*, dplyr::SymbolString const&) (subset_visitor_impl.h:21) ==12589== by 0x11AFEC18: dplyr::DataFrameSubsetVisitors...

...objects (in head matrix/array topic) I would light to shed some light > on a minor gap about that matter in R C API. > Currently we are able to check inheritance for S3 class objects from C > in a robust way (no allocation, thread safe). This is unfortunately Your premise is not correct. Rf_inherits will not GC but it can allocate and is not thread safe. Best, luke > not possible for S4 classes. I would kindly request new function in R > C api so it can be achieved for S4 classes with no risk of allocation. > For reference mentioned functions below. Thank you. > Jan Gorecki >...

Full_Name: Jonathan Paisley Version: 2.1.1 OS: Mac OS X 10.4.2 Submission from: (NULL) (81.178.107.67) I was following an example from library/grid/doc/grid.pdf ("Introduction to grid") and had the following code, where I'd mis-typed 1,3 instead of 1,2 as the first arguments to grid.layout. Sourcing this code causes the R GUI to crash. I've enclosed a partial backtrace from