https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93253
Tobias Burnus <burnus at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |burnus at gcc dot gnu.org --- Comment #9 from Tobias Burnus <burnus at gcc dot gnu.org> --- Now documented in the release notes: https://gcc.gnu.org/gcc-10/changes.html The error message now also has " [see -fallow-invalid-boz]" at the end. And the documentation now also mentions it at: https://gcc.gnu.org/onlinedocs/gfortran/BOZ-literal-constants.html (takes a moment; that page is only updated once per day) Patch is: https://gcc.gnu.org/ml/gcc-patches/2020-01/msg00917.html Background information on the original change is at: https://gcc.gnu.org/ml/fortran/2019-07/msg00054.html and https://gcc.gnu.org/ml/gcc-patches/2020-01/msg00903.html In the light of the latter, one also sees why it makes sense to create standard-conform programs – or to fix them if they are not. Hence, the documentation issue is now solved.