[llvm-bugs] [Bug 46018] New: flang when invoked without options just hangs [instead of providing an error message]

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46018

            Bug ID: 46018
           Summary: flang when invoked without options just hangs [instead
                    of providing an error message]
           Product: flang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedbugs at nondot.org
          Reporter: balay at mcs.anl.gov
                CC: David.Truby at arm.com, jperier at nvidia.com,
                    kirankumartp at gmail.com, llvm-bugs at lists.llvm.org,
                    sscalpone at nvidia.com

flang - when run without options just hangs. Other compilers gives a nice error
message

[balay at pj01 ~]$ clang
clang-11: error: no input files
[balay at pj01 ~]$ gfortran
gfortran: fatal error: no input files
compilation terminated.
[balay at pj01 ~]$ flang
<hang>

I guess this is related to https://bugs.llvm.org/show_bug.cgi?id=46017

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