View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000376 | 1003.1(2008)/Issue 7 | Base Definitions and Headers | public | 2011-02-08 16:21 | 2013-04-16 13:06 |
| Reporter | eblake | Assigned To | ajosey | ||
| Priority | normal | Severity | Objection | Type | Omission |
| Status | Closed | Resolution | Accepted As Marked | ||
| Name | Eric Blake | ||||
| Organization | Red Hat | ||||
| User Reference | ebb.dev_t | ||||
| Section | <sys/types.h> | ||||
| Page Number | 399 | ||||
| Line Number | 13413 | ||||
| Interp Status | Approved | ||||
| Final Accepted Text | 0000376:0000720 | ||||
| Summary | 0000376: dev_t should be integral | ||||
| Description | I see no reason why dev_t should ever be a floating point type, and all existing implementations provide it as an integral type (although with size ranging between 16 bits and 64 bits). Similar to 0000327 for time_t, we might as well match existing practice and tighten the specification to ease the burden of applications not having to worry about writing code portable to a floating point type (see, for example: http://lists.gnu.org/archive/html/bug-gnulib/2011-02/msg00106.html). Unfortunately, at least HP-UX 11.31 has dev_t as an integral type, so we cannot require dev_t to be unsigned (also, there is historical evidence in Solaris 10 and Cygwin 1.5 that these platforms used to have dev_t as a signed 16-bit type, but now have it as an unsigned 32-bit type). Also, the standard is already clear that ino_t is unsigned, but only in one location, whereas limits on most other types are listed in two locations. | ||||
| Desired Action | Between lines 13415 and 13416 [XBD <sys/types.h> DESCRIPTION], add two bullets: • dev_t shall be an integer type. • ino_t shall be an unsigned integer type. At line 18820 [XSH 2.12.1 Defined Types], change: dev_t Arithmetic type used for device numbers. to: dev_t Integer type used for device numbers. | ||||
| Tags | tc1-2008 | ||||
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The requirement for ino_t to be an unsigned integer type is already stated on the <sys/types.h> page at line 13417. |
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Interpretation response ------------------------ The standard states that dev_t is allowed to be a floating type, and conforming applications must conform to this. However, concerns have been raised about this which are being referred to the sponsor. Rationale: ------------- Although dev_t is allowed to be a floating type, all known implementations use an integral type and many applications assume that it is an integral type. Notes to the Editor (not part of this interpretation): ----------------------------------------------------- Between lines 13415 and 13416 [XBD <sys/types.h> DESCRIPTION], add a bullet: • dev_t shall be an integer type. At line 18820 [XSH 2.12.1 Defined Types], change: dev_t Arithmetic type used for device numbers. to: dev_t Integer type used for device numbers. |
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Just resetting the interpretation status to Pending prior to setting a batch to proposed :-) |
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Interpretation proposed 16 June 2011 for final 30 day review |
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The interpretation is now approved. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2011-02-08 16:21 | eblake | New Issue | |
| 2011-02-08 16:21 | eblake | Status | New => Under Review |
| 2011-02-08 16:21 | eblake | Assigned To | => ajosey |
| 2011-02-08 16:21 | eblake | Name | => Eric Blake |
| 2011-02-08 16:21 | eblake | Organization | => Red Hat |
| 2011-02-08 16:21 | eblake | User Reference | => ebb.dev_t |
| 2011-02-08 16:21 | eblake | Section | => <sys/types.h> |
| 2011-02-08 16:21 | eblake | Page Number | => 399 |
| 2011-02-08 16:21 | eblake | Line Number | => 13413 |
| 2011-02-08 16:21 | eblake | Interp Status | => --- |
| 2011-02-10 15:34 | geoffclare | Note Added: 0000672 | |
| 2011-03-24 15:54 | msbrown | Interp Status | --- => Proposed |
| 2011-03-24 15:54 | msbrown | Note Added: 0000720 | |
| 2011-03-24 15:54 | msbrown | Status | Under Review => Interpretation Required |
| 2011-03-24 15:54 | msbrown | Resolution | Open => Accepted As Marked |
| 2011-03-24 15:55 | msbrown | Tag Attached: tc1-2008 | |
| 2011-03-24 15:55 | msbrown | Final Accepted Text | => 0000376:0000720 |
| 2011-03-24 15:57 | msbrown | Note Edited: 0000720 | |
| 2011-06-16 10:11 | ajosey | Interp Status | Proposed => Pending |
| 2011-06-16 10:11 | ajosey | Note Added: 0000839 | |
| 2011-06-16 10:14 | ajosey | Interp Status | Pending => Proposed |
| 2011-06-16 10:14 | ajosey | Note Added: 0000840 | |
| 2011-07-29 06:15 | ajosey | Interp Status | Proposed => Approved |
| 2011-07-29 06:15 | ajosey | Note Added: 0000912 | |
| 2013-04-16 13:06 | ajosey | Status | Interpretation Required => Closed |
