View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0001171 | 1003.1(2016/18)/Issue7+TC2 | Base Definitions and Headers | public | 2017-11-22 09:52 | 2024-06-11 09:09 |
| Reporter | martinr | Assigned To | |||
| Priority | normal | Severity | Objection | Type | Error |
| Status | Closed | Resolution | Accepted As Marked | ||
| Name | Martin Rehak | ||||
| Organization | Oracle Corporation | ||||
| User Reference | |||||
| Section | <sys/time.h> | ||||
| Page Number | 399 | ||||
| Line Number | 13572 | ||||
| Interp Status | --- | ||||
| Final Accepted Text | See 0001171:0004242 | ||||
| Summary | 0001171: <sys/select.h> doesn’t allow to include <sys/time.h> namespace anymore | ||||
| Description | The standard in XPG7 version says for <sys/select.h>: "Inclusion of the <sys/select.h> header may make visible all symbols from the headers <signal.h> and <time.h>." In previous version (XPG6) there was also <sys/time.h> allowed to be included in <sys/select.h>, but we were not able to find out why the change happened. We are just guessing that intention was to do reverse inclusion: The select() was defined in <sys/time.h> in earlier versions of the standard (pre-XPG6). However, with the introduction of pselect() in <sys/select.h> in XPG6, the move was made to define ALL the related definitions for pselect() and select() in <sys/select.h>. As noted on the pselect() page in SUSv4 Rationale section, "Backwards-compatibility to existing XSI implementations is handled by allowing <sys/time.h> to include <sys/select.h>. This is KEY statement. Looking at the <sys/select.h> header, it appears the intent was that <sys/select.h> would now define the timeval structure and it's members. In XPG7, the specification for both <sys/time.h> and <sys/select.h> states that the respective header: "...shall define the timeval structure, which shall include at least the following members: time_t tv_sec Seconds. suseconds_t tv_usec Microseconds." This appears to be a bug. Given that <sys/time.h> further states that "Inclusion of the <sys/time.h> header may make visible all the symbols from the <sys/select.h> header", along with the previously quoted Rationale, it appears the intent was indeed to move the timeval structure definition to <sys/select.h>. Hence, the description in <sys/time.h> should probably read: "The <sys/time.h> header shall define the timeval structure as described in <sys/select.h>. | ||||
| Desired Action | 1) Clarify why the mentioned change happened. 2) If our guessing is right change the <sys/time.h> description (Page 399 / Line: 13572) to: The <sys/time.h> header shall define the timeval structure as described in <sys/select.h>. | ||||
| Tags | tc3-2008 | ||||
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Change page 399 lines 13572-13575 (<sys/time.h>) from:The <sys/time.h> header shall define the timeval structure, which shall include at least the following members: to: The <sys/time.h> header shall define the fd_set type and Delete page 399 line 13582: The <sys/time.h> header shall define the fd_set type as described in <sys/select.h>. Change the RATIONALE section on page 400 line 13609 from: None. to: The <sys/time.h> header refers to <sys/select.h> for the definition of the timeval structure, instead of the other way round, because <sys/time.h> is an optional (XSI) header whereas <sys/select.h> is mandatory. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2017-11-22 09:52 | martinr | New Issue | |
| 2017-11-22 09:52 | martinr | Name | => Martin Rehak |
| 2017-11-22 09:52 | martinr | Organization | => Oracle Corporation |
| 2017-11-22 09:52 | martinr | Section | => <sys/time.h> |
| 2017-11-22 09:52 | martinr | Page Number | => 399 |
| 2017-11-22 09:52 | martinr | Line Number | => 13572 |
| 2019-02-07 16:23 | nick | Note Added: 0004242 | |
| 2019-02-07 16:24 | nick | Interp Status | => --- |
| 2019-02-07 16:24 | nick | Final Accepted Text | => See 0001171:0004242 |
| 2019-02-07 16:24 | nick | Status | New => Resolved |
| 2019-02-07 16:24 | nick | Resolution | Open => Accepted As Marked |
| 2019-02-07 16:24 | nick | Tag Attached: tc3-2008 | |
| 2019-11-08 10:32 | geoffclare | Status | Resolved => Applied |
| 2024-06-11 09:09 | agadmin | Status | Applied => Closed |
