View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0036053 | FPC | Compiler | public | 2019-09-06 21:11 | 2019-09-09 17:17 |
| Reporter | Bloodbatgot | Assigned To | |||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | new | Resolution | open | ||
| Platform | MS-DOS 16 bit | OS | Windows | OS Version | 10 |
| Product Version | 3.0.4 | Product Build | |||
| Target Version | Fixed in Version | ||||
| Summary | 0036053: The MS-DOS 16 bit cross compiler refuses to compile when using an array with valid ranges. | ||||
| Description | When trying to compile a 64000 byte array the cross compiler for MS-DOS refuses, even if -WmLarge is used. It is valid code: Turbo Pascal compiles it without a hitch and it is a way to, for example, access VGA memory to write to it. | ||||
| Steps To Reproduce | Create an array with a range from 0 to 63999 (check the attached sample file), try to cross compile it for MS-DOS, the compiler refuses with an error: "Error: The range of the array is too large". If the same code is tried with dynamic arrays and SetLength, the compiler emits a warning: "Warning: range check error while evaluating constants (64000 must be between -32768 and 32767)" And, indeed, the program stops when trying to run it with an error 201. | ||||
| Tags | No tags attached. | ||||
| Fixed in Revision | |||||
| FPCOldBugId | |||||
| FPCTarget | |||||
| Attached Files |
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test64.pas (98 bytes)
unit Test64; interface type TArray64 = array[0..63999] of byte; implementation end. |
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The constants are 16 bit integers. Did you try casting it ? [0..DWORD(64000)] of Byte ? Or use LongInt(64000) Worth a try anyways. |
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Or Use WORD(64000), almost forgot that one.. |
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I didn't at first; but, after your suggestion, now I have. Same error: array range too large. |
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I can't believe TP <= 5.5 accept that code. At least 3.0 fails, have to test 5.5. It may be just the last incarnation of BP7 accepted it, but I haven't got that anymore. IIRC that is huge model only anyway. [edit] TP 5.5 also does not accept it. This is not true: "When trying to compile a 64000 byte array the cross compiler for MS-DOS refuses, even if -WmLarge is used. It is valid code: Turbo Pascal compiles it without a hitch" AFAIK not even BP7.0 compiles that in large mode. |
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confirm: TP7 can compile given test sample for dos real mode. |
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My TP6.0 has no issues with that, its valid code it should compile.. This is only a type being defined |
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Thaddy: if PROPERLY defined (array[0..63999] of byte) does indeed compile under TP 5.5. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2019-09-06 21:11 | Bloodbatgot | New Issue | |
| 2019-09-06 21:11 | Bloodbatgot | File Added: test64.pas | |
| 2019-09-07 00:41 | jamie philbrook | Note Added: 0117962 | |
| 2019-09-07 00:44 | jamie philbrook | Note Added: 0117964 | |
| 2019-09-07 12:27 | Bloodbatgot | Note Added: 0117968 | |
| 2019-09-08 14:45 | Thaddy de Koning | Note Added: 0117993 | |
| 2019-09-08 14:46 | Thaddy de Koning | Note Edited: 0117993 | View Revisions |
| 2019-09-08 14:48 | Thaddy de Koning | Note Edited: 0117993 | View Revisions |
| 2019-09-08 14:50 | Thaddy de Koning | Note Edited: 0117993 | View Revisions |
| 2019-09-08 15:37 | Marģers | Note Added: 0117994 | |
| 2019-09-08 18:26 | jamie philbrook | Note Added: 0117997 | |
| 2019-09-09 17:16 | Bloodbatgot | Note Added: 0118005 | |
| 2019-09-09 17:17 | Bloodbatgot | Note Edited: 0118005 | View Revisions |
