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3d1157000d
A recent patch to allow pFUnit to compile softened the diagnostic about indistinguishable specific procedures to a portability warning. It turns out that this was overkill -- for specific procedures containing no optional or unlimited polymorphic dummy data arguments, a diagnosis of "indistinguishable" can still be a hard error. So adjust the analysis to be tri-state: two procedures are either definitely distinguishable, definitely indistinguishable without optionals or unlimited polymorphics, or indeterminate. Emit errors as before for the definitely indistinguishable cases; continue to emit portability warnings for the indeterminate cases. When this patch is merged, all but one of the dozen or so tests that I disabled in llvm-test-suite can be re-enabled.
38 lines
1.3 KiB
Fortran
38 lines
1.3 KiB
Fortran
! RUN: %python %S/test_errors.py %s %flang_fc1
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! Check for distinguishability of defined I/O procedures defined within
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! and outside their types.
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module m1
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type t1
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integer n
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contains
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procedure :: readt1a, readt1b
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!ERROR: Generic 'read(unformatted)' may not have specific procedures 'readt1a' and 'readt1b' as their interfaces are not distinguishable
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generic :: read(unformatted) => readt1a, readt1b
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end type
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type t2
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integer n
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end type
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type t3
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integer n
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end type
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!ERROR: Generic 'read(unformatted)' may not have specific procedures 'readt2a' and 'readt2b' as their interfaces are not distinguishable
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interface read(unformatted)
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module procedure :: readt1a, readt2a, readt2b, readt3
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end interface
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contains
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#define DEFINE_READU(name, type) \
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subroutine name(dtv, unit, iostat, iomsg); \
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class(type), intent(in out) :: dtv; \
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integer, intent(in) :: unit; \
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integer, intent(out) :: iostat; \
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character(*), intent(in out) :: iomsg; \
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read(unit, iostat=iostat, iomsg=iomsg) dtv%n; \
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end subroutine name
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!ERROR: Derived type 't1' has conflicting type-bound input/output procedure 'read(unformatted)'
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DEFINE_READU(readt1a, t1)
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DEFINE_READU(readt1b, t1)
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DEFINE_READU(readt2a, t2)
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DEFINE_READU(readt2b, t2)
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DEFINE_READU(readt3, t3)
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end module
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