Re: [R-pkg-devel] OpenMP variable not specified in enclosing 'parallel'

[Ivan Krylov]

On Mon, 23 Mar 2020 15:29:20 +0100
Emil Sjørup  wrote:

> const int iMaxLag = 20;

> error: ‘iMaxLag’ not specified in enclosing ‘parallel’

> error: ‘iMaxLag’ is predetermined ‘shared’ for ‘shared’

This looks like a compiler bug to me. g++ seems to forget the rule that
"const" variables are supposed to be shared despite the default(none)
clause.

In a similar situation (g++ being confused about the sharing
status of a hidden temporary variable it had internally created) I had
to remove default(none) and leave a comment explaining that the code
would not compile otherwise.

-- 
Best regards,
Ivan

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[R-pkg-devel] OpenMP variable not specified in enclosing 'parallel'

[Emil Sjørup]

Hi,


I am getting an error message during pre-checks when I upload a new 
version of my package to CRAN, and I need help.


See: 
https://win-builder.r-project.org/incoming_pretest/DriftBurstHypothesis_0.3.0.1_20200322_134148/Debian/00install.out 




The package installs just fine on windows, and on my system.


It seems to me that the message tells me that I have an undeclared 
variable in the parallel setup.


So, if I add the variable to the shared variables in the setup, I get 
the following error message:



error: ‘iMaxLag’ is predetermined ‘shared’ for ‘shared’


Passing the variable to the private variable in the setup doesn't work 
either.


Am I misunderstanding the error or is something weird going on?



For the interested, the source being uploaded can be found in:

ftp://cran.r-project.org/incoming/archive/

under DriftBurstHypothesis_0.3.0.1.tar.gz


Best,

Emil

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