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This is a set of tools for testing the applicability of Fortran compilers in my project that develops optimization solvers.

• 鲲鹏计算平台 (Kunpeng platform with Ubuntu 18.04)
• Ubuntu 20.04, Intel(R) Core(TM) i7-10610U
• Ubuntu 20.04, Intel(R) Core(TM) i7-4790 CPU

• ❎ 毕昇编译器 (Bisheng Compiler, based on the Classic flang) 1.3.3.b023 (fail: Array, Alloc, Implied do)
• ☑️ Absoft af95 in Absoft 64-bit Pro Fortran 22.0.2 with patch 3
• ❎ AOCC flang 4.0.0 (fail: solve, Array, Alloc, Implied do)
• ❎ Classic flang 15.0.3 (fail: test_value, solve, Count, Alloc)
• ❎ G95 g95 0.94 (insufficient support for F03 constructs)
• ❎ GNU gfortran 13.1.0 (fail: test_eqv)
• ☑️ Intel ifort 2021.9.0
• ☑️ Intel ifx 2023.1.0
• ❎ Lahey lf95 L8.10b (insufficient support for F03 constructs)
• ❎ NAG nagfor Release 7.1 (Hanzomon) Build 7143 (fail: test_sym, test_isorth, test_mult, test_abs)
• ❎ NVIDIA nvfortran 23.5 (fail: Alloc, Count, Implied do)
• ❎ Oracle sunf95 12.6 (fail: test_vec)

• Cray Fortran compiler
• IBM Fortran compiler
• LFortran
• NEC Fortran compiler

The compilers can be tested using the Makefile by the commands below. Of course, you need to have the tested compiler installed on your computer, and you may need to edit the Makefile to fit your platform.

make atest  # Test af95
make dtest  # Test AOCC flang
make ftest  # Test classic flang
make 9test  # Test g95
make gtest  # Test gfortran
make itest  # Test ifort
make xtest  # Test ifx
make ltest  # Test lf95
make ntest  # Test nagfor
make vtest  # Test nvfortran
make stest  # Test sunf95

• Fortran Discourse: Availability and applicability of Fortran compilers for a project

• Flang GitHub Issue: flang-new 19.0.0 bug: nan > 0, nan > 1

• Flang GitHub Issue: flang-new 19.0.0 bug: sum([Inf, 0.0]) = NaN, while Inf + 0.0 = Inf

• Flang GitHub Issue: False positive: out-bound subscripts

• NVIDIA Developer Forums: Bug in nvfortran 22.3: false positive of out-bound subscripts

• NVIDIA Developer Forums: Bug of nvfortran 22.2-0: array subscript triplet handled wrongly

• Flang GitHub Issue: Array constructors fail

• NVIDIA Developer Forums: Array constructor fails in nvfortran 22.3-0

• Intel Community: Bug: ifort and ifx crash when compiling a piece of (invalid) code involving ieee_arithmetic

• Fortran Discourse: Implied do and array constructor: Strange behavior of flang and related compilers (see also Flang issue #1200, NVIDIA Developer Forums, and AMD Community)

• Intel Community: Bug in ifort and ifx from oneAPI 2021.2.0 & 2022.0.1: false positive of unused variable

• Intel Community: Bug? Strange error raised by ifort -check shape

• Fortran Discourse: Strange behavior of ifort

• Intel Communities: A bug of ifort (IFORT) 2021.7.1 20221019

• Fortran Discourse: 1/inf =? ifort says NaN

• Flang GitHub Issue: Flang Binary Release 2019-03-29: NaN > 0

• Intel Community: ifort raises a SIGSEGV when evaluating "NaN >= 0"

• Fortran Discourse: Is comparison with NaN considered an erroneous arithmetic operation?

• Intel Community: Ifort (IFORT) 2021.8 evaluates 1.0+37 / 1.0E+38 to 0

• Fortran Discourse: Ifort (IFORT) 2021.8.0: 1.0E+37 / 1.0E+38 = 0

• Intel Community: Fail to install oneAPI 2021 on Windows Server 2022

• Fortran Discourse: Warning: ‘.str’ may be used uninitialized

Feel free to contact me if you would like to suggest a compiler or have questions about the test. See my homepage for contact information.