f9e24a563c
Summary: A program may erroneously reference the same name as both a data object and as a function. Some of these references were causing an internal error in expression analysis. It was already the case that a symbol referenced in a parse tree for a call was changed from an `Entity` to a `ProcEntity`. I added code to detect when a symbol was referenced in a parse tree as an array element gets changed from an `Entity` to an `ObjectEntity`. Then, if an `ObjectEntity` gets called as a function or a `ProcEntity` gets referenced as a data object, errors get emitted. This analysis was previously confined to the name resolution of the specification part of a `ProgramTree`. I added a pass to the execution part of a `ProgramTree` to catch names declared in blocks. Reviewers: tskeith, klausler, DavidTruby Subscribers: llvm-commits Tags: #llvm, #flang Differential Revision: https://reviews.llvm.org/D82903
45 lines
1.1 KiB
Fortran
45 lines
1.1 KiB
Fortran
! RUN: %S/test_errors.sh %s %t %f18
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subroutine s1()
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character(10) str
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character(10) str1
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!ERROR: Cannot reference function 'str' as data
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print *, str(1:9), str(7)
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block
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character(10) str2
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character(10) str3
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!ERROR: Cannot reference function 'str1' as data
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print *, str1(1:9), str1(7)
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!ERROR: 'str2' is not an array
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print *, str2(1:9), str2(7)
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!ERROR: Cannot reference function 'str3' as data
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print *, str3(7), str3(1:9)
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end block
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end subroutine s1
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subroutine s2()
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character(10) func
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!ERROR: Cannot reference function 'func' as data
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print *, func(7), func(1:9)
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end subroutine s2
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subroutine s3()
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real(8) :: func
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!ERROR: Cannot reference function 'func' as data
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print *, func(7), func(1:6)
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end subroutine s3
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subroutine s4()
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real(8) :: local
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real(8) :: local1
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!ERROR: Cannot reference function 'local' as data
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print *, local(1:6), local(7)
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!ERROR: Cannot reference function 'local1' as data
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print *, local1(7), local1(1:6)
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end subroutine s4
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subroutine s5(arg)
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integer :: iVar
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external :: arg
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iVar = loc(arg)
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end subroutine s5
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