https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93330
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Harald Anlauf <anl...@gcc.gnu.org>: https://gcc.gnu.org/g:18e49f19f5907de8d28cd33a8789946a3f5092ce commit r16-3462-g18e49f19f5907de8d28cd33a8789946a3f5092ce Author: Harald Anlauf <anl...@gmx.de> Date: Thu Aug 28 22:07:10 2025 +0200 Fortran: improve compile-time checking of character dummy arguments [PR93330] PR fortran/93330 gcc/fortran/ChangeLog: * interface.cc (get_sym_storage_size): Add argument size_known to indicate that the storage size could be successfully determined. (get_expr_storage_size): Likewise. (gfc_compare_actual_formal): Use them to handle zero-sized dummy and actual arguments. If a character formal argument has the pointer or allocatable attribute, or is an array that is not assumed or explicit size, we generate an error by default unless -std=legacy is specified, which falls back to just giving a warning. If -Wcharacter-truncation is given, warn on a character actual argument longer than the dummy. Generate an error for too short scalar character arguments if -std=f* is given instead of just a warning. gcc/testsuite/ChangeLog: * gfortran.dg/argument_checking_15.f90: Adjust dg-pattern. * gfortran.dg/bounds_check_strlen_7.f90: Add dg-pattern. * gfortran.dg/char_length_3.f90: Adjust options. * gfortran.dg/whole_file_24.f90: Add dg-pattern. * gfortran.dg/whole_file_29.f90: Likewise. * gfortran.dg/argument_checking_27.f90: New test.
