Switching compiler/GCC version about rtools-packages HOT 8 CLOSED

That won't happen any time soon. I also doubt that this is a problem related to the compiler version.

If you want your package to build with R 4.0 or 4.1 on Windows you need to make it work with gcc 8.3.0 from rtools40
If you want your package to build with R 3.3 - 3.6 or lower on Windows, it has to work with gcc 4.9.3 from rtools35

I recommend you just try to fix the overflow.

from rtools-packages.

You could also try adding -Wno-array-bounds to the PKG_CXXFLAGS in your src/Makevars.win to suppress the warning, if you're lucky CRAN will allow that.

from rtools-packages.

I understand, thank you for your time.

For what its worth I also doubt it is a compiler problem. But its happening in an empty project with just the boost headers and exclusive to windows. Trying to upgrade GCC was just an attempt to collect evidence.

from rtools-packages.

Do you see the warning in both 32-bit and 64-bit windows?

from rtools-packages.

I don't see it for i386. How did you know?

from rtools-packages.

Just to let you know, shortly before losing my mind I stumbled on this stack overflow issue and finally fixed the issue.
Apparently GCC optimized the buffer class at O2 in a way the bounds checker did not like.
Turning the optimization level down to O1 for that a header fixed it (nx10/httpgd@dfb080e). I really hope CRAN will allow this.

Thank you for your time anyway.

from rtools-packages.

So it's a compiler bug in gcc 8.3.0? The issue mentions the problem on gcc 8.3.0 on Linux? So you should see the same issue in CentOS 8 or Debian 10, which all run gcc 8.3.0?

from rtools-packages.

I tested Debian 10 (g++ 8.3.0-6), it does not happen there. As far as I can tell it is exclusive for windows 64bit. I have no idea why.

from rtools-packages.