573fc6187b
The infrastructure in semantics that is used to check that the left-hand sides of normal assignment statements are really definable variables was not being used to check whether the LHSs of pointer assignments are modifiable, and so most cases of unmodifiable pointers are left undiagnosed. Rework the semantics checking for pointer assignments, NULLIFY statements, pointer dummy arguments, &c. so that cases of unmodifiable pointers are properly caught. This has been done by extracting all the various definability checking code that has been implemented for different contexts in Fortran into one new facility. The new consolidated definability checking code returns messages meant to be attached as "because: " explanations to context-dependent errors like "left-hand side of assignment is not definable". These new error message texts and their attached explanations affect many existing tests, which have been updated. The testing infrastructure was extended by another patch to properly compare warnings and explanatory messages, which had been ignored until recently. Differential Revision: https://reviews.llvm.org/D136979
139 lines
4.7 KiB
Fortran
139 lines
4.7 KiB
Fortran
! RUN: %python %S/test_errors.py %s %flang_fc1
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character(len=20) :: access = "direcT"
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character(len=20) :: access_(2) = (/"direcT", "streaM"/)
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character(len=20) :: action_(2) = (/"reaD ", "writE"/)
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character(len=20) :: asynchronous_(2) = (/"nO ", "yeS"/)
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character(len=20) :: blank_(2) = (/"nulL", "zerO"/)
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character(len=20) :: decimal_(2) = (/'commA', 'poinT'/)
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character(len=20) :: delim_(2) = (/"nonE ", "quotE"/)
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character(len=20) :: encoding_(2) = (/"defaulT", "utF-8 "/)
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character(len=20) :: form_(2) = (/"formatteD ", "unformatteD"/)
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character(len=20) :: pad_(2) = (/"nO ", "yeS"/)
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character(len=20) :: position_(3) = (/"appenD", "asiS ", "rewinD"/)
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character(len=20) :: round_(2) = (/"dowN", "zerO"/)
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character(len=20) :: sign_(2) = (/"pluS ", "suppresS"/)
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character(len=20) :: status_(2) = (/"neW", "olD"/)
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character(len=20) :: convert_(2) = (/"big_endiaN", "nativE "/)
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character(len=20) :: dispose_(2) = (/ "deletE", "keeP "/)
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character(len=66) :: cc, msg
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integer :: new_unit
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integer :: unit10 = 10
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integer :: unit11 = 11
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integer :: n = 40
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integer, parameter :: const_new_unit = 66
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integer(kind=1) :: stat1
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integer(kind=2) :: stat2
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integer(kind=4) :: stat4
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integer(kind=8) :: stat8
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cc = 'scratch'
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open(unit10)
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open(blank='null', unit=unit10, pad='no')
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open(unit=unit11, err=3)
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3 continue
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open(20, access='sequential')
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open(21, access=access, recl=n)
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open(22, access=access_(2), iostat=stat1, iomsg=msg)
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open(30, action='readwrite', asynchronous='n'//'o', blank='zero')
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open(31, action=action_(2), asynchronous=asynchronous_(2), blank=blank_(2))
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open(unit=40, decimal="comma", delim="apostrophe", encoding="utf-8")
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open(unit=41, decimal=decimal_(2), delim=delim_(2), encoding=encoding_(2))
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open(50, file='abc', status='unknown', form='formatted')
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open(51, file=access, status=status_(2), form=form_(2))
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open(newunit=new_unit, pad=pad_(2), status='scr'//'atch'//'')
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open(newunit=new_unit, pad=pad_(2), status=cc)
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open(unit=60, position='rewind', recl=(30+20/2), round='zero')
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open(position=position_(1), recl=n, round=round_(2), unit=61)
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open(unit=70, sign='suppress', &
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status='unknown', iostat=stat2)
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open(unit=70, sign=sign_(2), status=status_(2))
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open(80, convert='big_endian', dispose='delete')
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open(81, convert=convert_(2), dispose=dispose_(2))
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open(access='STREAM', 90) ! nonstandard
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open (unit=91, file='xfile', carriagecontrol='list') ! nonstandard
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!ERROR: OPEN statement must have a UNIT or NEWUNIT specifier
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!ERROR: If ACCESS='DIRECT' appears, RECL must also appear
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open(access='direct')
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!ERROR: If STATUS='STREAM' appears, RECL must not appear
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open(10, access='st'//'ream', recl=13)
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!ERROR: Duplicate NEWUNIT specifier
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!ERROR: If NEWUNIT appears, FILE or STATUS must also appear
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open(newunit=n, newunit=nn, iostat=stat4)
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!ERROR: NEWUNIT variable 'const_new_unit' is not definable
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!BECAUSE: '66_4' is not a variable or pointer
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open(newunit=const_new_unit, status=cc)
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!ERROR: Duplicate UNIT specifier
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open(unit=100, unit=100)
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!ERROR: Duplicate UNIT specifier
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open(101, delim=delim_(1), unit=102)
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!ERROR: Duplicate UNIT specifier
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open(unit=103, &
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unit=104, iostat=stat8)
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!ERROR: Duplicate UNIT specifier
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!ERROR: If ACCESS='DIRECT' appears, RECL must also appear
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open(access='dir'//'ect', 9, 9) ! nonstandard
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!ERROR: Duplicate ROUND specifier
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open(105, round=round_(1), pad='no', round='nearest')
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!ERROR: If NEWUNIT appears, UNIT must not appear
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!ERROR: If NEWUNIT appears, FILE or STATUS must also appear
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open(106, newunit=n)
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!ERROR: RECL value (-30) must be positive
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open(107, recl=40-70)
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!ERROR: RECL value (-36) must be positive
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open(108, recl=- - (-36)) ! nonstandard
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!ERROR: Invalid ACTION value 'reedwrite'
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open(109, access=Access, action='reedwrite', recl=77)
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!ERROR: Invalid ACTION value 'nonsense'
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open(110, action=''//'non'//'sense', recl=77)
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!ERROR: Invalid STATUS value 'cold'
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open(111, status='cold')
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!ERROR: Invalid STATUS value 'Keep'
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open(112, status='Keep')
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!ERROR: If STATUS='NEW' appears, FILE must also appear
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open(113, status='new')
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!ERROR: If STATUS='REPLACE' appears, FILE must also appear
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open(114, status='replace')
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!ERROR: If STATUS='SCRATCH' appears, FILE must not appear
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open(115, file='abc', status='scratch')
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!ERROR: If NEWUNIT appears, FILE or STATUS='SCRATCH' must also appear
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open(newunit=nn, status='old')
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!ERROR: Unimplemented CARRIAGECONTROL value 'fortran'
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open (unit=116, file='xfile', carriagecontrol='fortran') ! nonstandard
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!ERROR: Invalid CARRIAGECONTROL value 'nonsense'
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open (unit=116, file='xfile', carriagecontrol='nonsense') ! nonstandard
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end
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