balazske added a comment.
The error state of the stream can store these combinations:
| | FERROR flag | FEOF flag | file position indeterminate |
| 1 | false | false | false | No error (single
state)
|
| 2 | true | false | false | should never
happen unless the "indeterminate" is cleared with a debug function
|
| 3 | false | true | false | FEOF flag set
(single state)
|
| 4 | false | false | true | only
indeterminate position but no error flags (single state), can occur after
`fseek` or `clearerr` |
| 5 | true | true | false | should never
occur
|
| 6 | true | false | true | FERROR set,
always together with indeterminate position (single state)
|
| 7 | false | true | true | FEOF set,
indeterminate position should be ignored here (single state), same as case 3
|
| 8 | true | true | true | the single
combined ("Schrödinger") state: cases 3 and 6, this means delay of the state
split until the exact error is revealed |
|
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D106262/new/
https://reviews.llvm.org/D106262
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