https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100360
--- Comment #2 from aliaga at uji dot es --- (In reply to Andrew Pinski from comment #1) > This is most likely due to this: > warning: GMP header version 6.2.0 differs from library version 6.2.1. > > Can you make sure you have the correct version of GMP installed and such. Hi, Thank you very much for your quick answer!! I downloaded and installed the version 6.2.1 of GMP library in a local directory, but the code attached in the bug doesn't use the GMP library. Therefore, why does this error happen? In any case, I have recompiled the codes, and now the error doesn't occur. I don't understand why. It is true that the first error occurred in a larger code where GMP 6.2.1 was used. From this, I reduced the code trying to isolate the problem, removing the use of GMP and generating a really short code. The only reasoning to justify the solution could be that I have reconnected to the machine, but it is rare. Given that the error no longer occurs, I want to thank you again your help. Best regards, José I. Aliaga