https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51310
--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- Output from the test in comment 0 is now NaN 0.0000000000000000 NaN n= 3 a= NaN NaN NaN var= NaN b= NaN NaN NaN c= 0.0000000000000000 0.0000000000000000 0.0000000000000000 i.e., the allocated allocatable arrays are not initialized. Toon do you still want to have this PR assigned to you? This PR is also related to pr33430.