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Compiler Bug in Complex Read

padway__emmett
Beginner
203 Views

I have found a bug in the intel ifort compiler 2019.3.199. I try to read real data into a complex variable using the following code: read(2) CFL%re

read(2) W%re

 

When doing so I get the following error: "Constants and expressions are invalid in read-only" Given that ifort claims it is fortran 2008 compliant, and that this capability is part of the 2008 standard, I believe I have found a bug.

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5 Replies
Steve_Lionel
Black Belt Retired Employee
203 Views

I agree that this would be a bug; %re and %im are treated as components of the complex type. Do you understand that these statements change only the real part and don't touch the imaginary part?

Please use the orange "Bug Report" button at the top of the forum to report this to Intel.

padway__emmett
Beginner
203 Views

Hi Steve,

Thanks for the response. Indeed I do. I have restart files and write only the real part of the arrays to them. As such when I read, I want to only read the real part. Hence the attempt (in the complex mode of the code) to read with:

read(2) W%re

I'll submit a bug report in the hopes of getting this fixed. As otherwise I need to do some ugly copying with my arrays which is undesirable.

 

Thanks,

Emmett

 

padway__emmett
Beginner
198 Views

I submitted a bug report after the previous comment and Intel never fixed this issue. I'm bumping this in the hopes of shaming them some after nearly a year.

Steve_Lionel
Black Belt Retired Employee
182 Views

I suggest you add a reply to your existing bug report asking for status.  This usually helps. Posting here may not, as the support engineers don't seem to follow up on issues posted here (I always did...)

padway__emmett
Beginner
177 Views

Thanks, will do. And you're the legend for a reason

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