Bug 154804
| Summary: | strptime '%z' format doesn't work. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | David Woodhouse <dwmw2> |
| Component: | glibc | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED RAWHIDE | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3 | CC: | drepper, roland |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | 2.3.5-3 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2005-04-28 12:34:56 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
%z has never been implemented, so I'd say this is mainly a documentation bug that documents a GNU extension that never existed. You can see that strptime returns NULL, i.e. an error. Unlike %z, %Z does not cause a failure, but is simply ignored. %z perhaps could be implemented, but %Z would be much harder. I fixed this in upstream glibc. %z has been implemented in CVS glibc, should appear in glibc-2.3.5-3 and above. |
The '%z' format character isn't functional. Try the following: #define _XOPEN_SOURCE #define _BSD_SOURCE #include <time.h> #include <stdio.h> int main(void) { struct tm tm; strptime("1113472456 +1000", "%s %z", &tm); if (tm.tm_gmtoff == 36000) { printf("OK"); return 0; } else { printf("Error: tm_gmtoff is %ld\n", tm.tm_gmtoff); return 1; } } The man page states that "In most cases the corresponding fields are parsed, but no field in tm is changed.". I assume that in the case of at least %F and %z, the field in tm _should_ be changed.