D lang compilers have an option -release (or similar) which turns off
asserts, contracts, and other runtime type checking. This patch wires
that up to the b_ndebug flag.
Fixes#7082
Fortran: check for undeclared variables by forcing implicit none everywhere
C/C++: check for unused parameters and return types
removed unused variables from test cases
ci: do missing return and unused arg check with Github Actions
Without this change, the test fails with:
[11/12] Linking target square-gen-test.
warning: Text relocation remains referenced
against symbol offset in file
square_unsigned 0x15 square-gen-test@exe/main.c.o
[12/12] Linking target square-ct-test.
warning: Text relocation remains referenced
against symbol offset in file
square_unsigned 0x15 square-ct-test@exe/main.c.o
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>