Linking errors when using memory sanitizer in fortran project

[ogmundur]

When I use the check uninit option in a large, mixed language (fortran and C) project with the new ifx driver I get a huge amount of the following linking errors:

undefined reference to `__msan_chain_origin'

with references to numerous other routines from the memory sanitizer all beginning with __msan. If I turn the uninit check off, the project compiles and links successfully.

I am using ifx version 2023.2.0. I am using CMake, which automatically selects ifx to link the executable.

Should I be passing further options to the linker, so that it finds the memory sanitzer routines?

[Barbara_P_Intel · Accepted solution]

When you compile with -check uninit (or -check all) you also need to link with that compiler option.

[ogmundur]

Great, thanks - that did the trick!