[llvm-bugs] [Bug 47173] New: explicit type for variables in function declaration not recognized

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47173

            Bug ID: 47173
           Summary: explicit type for variables in function declaration
                    not recognized
           Product: flang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedbugs at nondot.org
          Reporter: naromero at 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

Created attachment 23852
  --> https://bugs.llvm.org/attachment.cgi?id=23852&action=edit
Explicit type in function declaration not recognized. Test case from NWChem.

This is a reduced test case extracted from the NWChem code. It compiles with
gfortran and pgfortran, but not with flang.

Here is the error that I get:
[naromero at naromero-desktop bugs]$
/nfs/gce/projects/naromero-workspace/llvm-master/bin/flang -c
testpreprocessor_selfreference.F 
testpreprocessor_selfreference.F:9:22: error: No explicit type declared for
'amat2'
        subroutine foo(Amat2,
                       ^^^^^
testpreprocessor_selfreference.F:10:12: error: No explicit type declared for
'mmat2'
       &     Mmat2,
             ^^^^^
testpreprocessor_selfreference.F:11:12: error: No explicit type declared for
'amat3'
       &     Amat3,
             ^^^^^
testpreprocessor_selfreference.F:12:12: error: No explicit type declared for
'cmat3'
       &     Cmat3)


The reduced test case will compile, if `implicit none` is removed.

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