Does anyone know whether the "new" Flang LLVM Fortran frontend (available since LLVM 12) or the "old"/"classic" Flang compiler (based on PGI/NVIDIA) support the SIZEOF() function as a Fortran extension?
This inquiry function is not in the Fortran standard. A lot of compilers support it as an extension (not an exhaustive list): GFortran, Intel Fortran Classic (ifort), IBM XL Fortran, PGI (rest in pieces), NVIDIA HPC SDK.
SIZEOF() extension in Flang
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