Displaying 6 results from an estimated 6 matches for "l4090".
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4090
2024 Jun 08
1
changes in R-devel and zero-extent objects in Rcpp
...how zero-length objects should be handled.
>
> ? ?The short(ish) version is that r86629 enables the
> CATCH_ZERO_LENGTH_ACCESS definition. This turns on the CHKZLN macro
> <https://github.com/r-devel/r-svn/blob/4ef83b9dc3c6874e774195d329cbb6c11a71c414/src/main/memory.c#L4090-L4104 <https://github.com/r-devel/r-svn/blob/4ef83b9dc3c6874e774195d329cbb6c11a71c414/src/main/memory.c#L4090-L4104>>,
> which returns a trivial pointer (rather than the data pointer that
> would
> be returned in the normal control flow) if an object has length 0:
>...
2024 Jun 08
1
changes in R-devel and zero-extent objects in Rcpp
...t; about how zero-length objects should be handled.
>
> The short(ish) version is that r86629 enables the
> CATCH_ZERO_LENGTH_ACCESS definition. This turns on the CHKZLN macro
> <
> https://github.com/r-devel/r-svn/blob/4ef83b9dc3c6874e774195d329cbb6c11a71c414/src/main/memory.c#L4090-L4104>,
>
> which returns a trivial pointer (rather than the data pointer that would
> be returned in the normal control flow) if an object has length 0:
>
> /* Attempts to read or write elements of a zero length vector will
> result in a segfault, rather than read and writ...
2024 Jun 09
1
[External] Re: changes in R-devel and zero-extent objects in Rcpp
...h objects should be handled.
>>
>> ? ?The short(ish) version is that r86629 enables the
>> CATCH_ZERO_LENGTH_ACCESS definition. This turns on the CHKZLN macro
>> <https://github.com/r-devel/r-svn/blob/4ef83b9dc3c6874e774195d329cbb6c11a71c414/src/main/memory.c#L4090-L4104
>> <https://github.com/r-devel/r-svn/blob/4ef83b9dc3c6874e774195d329cbb6c11a71c414/src/main/memory.c#L4090-L4104>>,
>> which returns a trivial pointer (rather than the data pointer that
>> would
>> be returned in the normal control flow) if an obj...
2024 Jun 09
1
[External] Re: changes in R-devel and zero-extent objects in Rcpp
...d.
> >>
> >> The short(ish) version is that r86629 enables the
> >> CATCH_ZERO_LENGTH_ACCESS definition. This turns on the CHKZLN macro
> >> <
> https://github.com/r-devel/r-svn/blob/4ef83b9dc3c6874e774195d329cbb6c11a71c414/src/main/memory.c#L4090-L4104
> >> <
> https://github.com/r-devel/r-svn/blob/4ef83b9dc3c6874e774195d329cbb6c11a71c414/src/main/memory.c#L4090-L4104
> >>,
> >> which returns a trivial pointer (rather than the data pointer that
> >> would
> >> be returned in the...
2024 Jun 08
1
changes in R-devel and zero-extent objects in Rcpp
...th a bit more discussion
about how zero-length objects should be handled.
The short(ish) version is that r86629 enables the
CATCH_ZERO_LENGTH_ACCESS definition. This turns on the CHKZLN macro
<https://github.com/r-devel/r-svn/blob/4ef83b9dc3c6874e774195d329cbb6c11a71c414/src/main/memory.c#L4090-L4104>,
which returns a trivial pointer (rather than the data pointer that would
be returned in the normal control flow) if an object has length 0:
/* Attempts to read or write elements of a zero length vector will
result in a segfault, rather than read and write random memory.
Return...
2024 Jun 10
1
changes in R-devel and zero-extent objects in Rcpp
...gt; >
> > ? ?The short(ish) version is that r86629 enables the
> > CATCH_ZERO_LENGTH_ACCESS definition. This turns on the CHKZLN macro
> >
<https://github.com/r-devel/r-svn/blob/4ef83b9dc3c6874e774195d329cbb6c11a71c414/src/main/memory.c#L4090-L4104
<https://github.com/r-devel/r-svn/blob/4ef83b9dc3c6874e774195d329cbb6c11a71c414/src/main/memory.c#L4090-L4104>>,
> > which returns a trivial pointer (rather than the data pointer that
> > would
> > be returned in the normal co...