[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
This bug was fixed in the package tzdata - 2024a-3ubuntu1.1
---
tzdata (2024a-3ubuntu1.1) noble; urgency=medium
* d/rules: Support creating symlinks pointing to symlinks
* Fixup for avoid timezones being symlinks to symlinks (LP: #2062522)
tzdata (2024a-3ubuntu1) noble; urgency=medium
* Merge with Debian unstable. Remaining changes:
- Ship 2024a ICU timezone data which are utilized by PHP in tzdata-icu
- Add autopkgtest test case for ICU timezone data
- Do not rename NEWS into changelog.gz, this fixes a build failure on
moment-timezone.js
- Point Vcs-Browser/Git to Launchpad
- generate_debconf_templates: Work around AttributeError on icu import
tzdata (2024a-3) unstable; urgency=medium
* Avoid timezones being symlinks to symlinks to avoid breaking C++20 standard
expectation (LP: #2062522)
-- Benjamin Drung Fri, 03 May 2024 13:27:11 +0200
** Changed in: tzdata (Ubuntu Noble)
Status: Fix Committed => Fix Released
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Title:
std::chrono::locate_zone("Asia/Chungking") fails
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
It seems this doesn't have anything to do with glibc? Marking as Invalid
there.
** Changed in: glibc (Ubuntu)
Status: New => Invalid
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Title:
std::chrono::locate_zone("Asia/Chungking") fails
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
This bug was fixed in the package tzdata - 2024a-4ubuntu1
---
tzdata (2024a-4ubuntu1) oracular; urgency=medium
* Merge with Debian unstable. Remaining changes:
- Ship 2024a ICU timezone data which are utilized by PHP in tzdata-icu
- Add autopkgtest test case for ICU timezone data
- Do not rename NEWS into changelog.gz, this fixes a build failure on
moment-timezone.js
- Point Vcs-Browser/Git to Launchpad
- generate_debconf_templates: Work around AttributeError on icu import
tzdata (2024a-4) unstable; urgency=medium
* d/rules: Support creating symlinks pointing to symlinks
* Fixup for avoid timezones being symlinks to symlinks (LP: #2062522)
tzdata (2024a-3) unstable; urgency=medium
* Avoid timezones being symlinks to symlinks to avoid breaking C++20 standard
expectation (LP: #2062522)
-- Benjamin Drung Thu, 02 May 2024 18:34:12 +0200
** Changed in: tzdata (Ubuntu)
Status: Fix Committed => Fix Released
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Title:
std::chrono::locate_zone("Asia/Chungking") fails
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
All autopkgtest runs succeeded except four autopkgtest fail on armhf
with tmpfail:
* dateparser
* golang-github-rickb777-date
* prometheus-alertmanager
* reposurgeon
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Title:
std::chrono::locate_zone("Asia/Chungking") fails
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
Verified that the testcase does not crash any more after updating
tzdata:
```
$ ./testcase
$ dpkg -s tzdata | grep ^Version
Version: 2024a-3ubuntu1.1
```
** Tags removed: verification-needed verification-needed-noble
** Tags added: verification-done verification-done-noble
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Title:
std::chrono::locate_zone("Asia/Chungking") fails
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
Uploaded tzdata 2024a-3ubuntu1.1 to apply the follow-up fix.
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Title:
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
Verification failed. The C++ code seems to read
/usr/share/zoneinfo/tzdata.zi which still has the wrong link:
```
$ dpkg -s tzdata | grep ^Version
Version: 2024a-3ubuntu1
$ grep Asia/Chungking /usr/share/zoneinfo/tzdata.zi
L Asia/Chongqing Asia/Chungking
$ ls -l /usr/share/zoneinfo/Asia/Chungking
lrwxrwxrwx 1 root root 8 Apr 19 19:51 /usr/share/zoneinfo/Asia/Chungking ->
Shanghai
```
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Title:
std::chrono::locate_zone("Asia/Chungking") fails
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
Verified that tzdata-legacy 2024a-2ubuntu1 crashes with the test case.
** Description changed:
+ [ Impact ]
+
forwarded from
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114770
```
#include
int main()
{
- (void) std::chrono::locate_zone("Asia/Chungking");
+ (void) std::chrono::locate_zone("Asia/Chungking");
}
```
With the latest tzdata (version 2024a-2) on Debian Sid this fails:
terminate called after throwing an instance of 'std::runtime_error'
- what(): tzdb: cannot locate zone: Asia/Chungking
+ what(): tzdb: cannot locate zone: Asia/Chungking
Aborted (core dumped)
The problem is a Debian patch that enables link chaining, so that one link
can have another link as its target:
https://sources.debian.org/patches/tzdata/2024a-2/ziguard.awk-Move-link-to-link-feature-from-vanguard-to-ma.patch/
This feature was added to tzdata in 2022, but isn't compatible with the
expectations of the C++20 standard. When chrono::locate_zone finds a
link, it expects its target to be a zone, not another link.
+
+ [ Test Plan ]
+
+ 1. Create `testcase.cpp`:
+
+ ```
+ #include
+ int main()
+ {
+ (void) std::chrono::locate_zone("Asia/Chungking");
+ }
+ ```
+
+ 2. Compile: `g++ -std=c++20 -o testcase testcase.cpp`
+ 3. Run: `./testcase`
+
+ The test case should not crash.
** Description changed:
[ Impact ]
forwarded from
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114770
```
#include
int main()
{
(void) std::chrono::locate_zone("Asia/Chungking");
}
```
With the latest tzdata (version 2024a-2) on Debian Sid this fails:
terminate called after throwing an instance of 'std::runtime_error'
what(): tzdb: cannot locate zone: Asia/Chungking
Aborted (core dumped)
The problem is a Debian patch that enables link chaining, so that one link
can have another link as its target:
https://sources.debian.org/patches/tzdata/2024a-2/ziguard.awk-Move-link-to-link-feature-from-vanguard-to-ma.patch/
This feature was added to tzdata in 2022, but isn't compatible with the
expectations of the C++20 standard. When chrono::locate_zone finds a
link, it expects its target to be a zone, not another link.
[ Test Plan ]
- 1. Create `testcase.cpp`:
+ 1. Install tzdata-legacy
+ 2. Create `testcase.cpp`:
```
#include
int main()
{
(void) std::chrono::locate_zone("Asia/Chungking");
}
```
- 2. Compile: `g++ -std=c++20 -o testcase testcase.cpp`
- 3. Run: `./testcase`
+ 3. Compile: `g++ -std=c++20 -o testcase testcase.cpp`
+ 4. Run: `./testcase`
The test case should not crash.
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std::chrono::locate_zone("Asia/Chungking") fails
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
Waiting for the package to hit the mirror...
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
This is a follow-up fix for the fix in bug #2055718
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Title:
std::chrono::locate_zone("Asia/Chungking") fails
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
Hello Matthias, or anyone else affected,
Accepted tzdata into noble-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/tzdata/2024a-3ubuntu1
in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed. Your feedback will aid us getting this
update out to other Ubuntu users.
If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
noble to verification-done-noble. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-noble. In either case, without details of your testing we will
not be able to proceed.
Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in
advance for helping!
N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.
** Changed in: tzdata (Ubuntu Noble)
Status: New => Fix Committed
** Tags added: verification-needed verification-needed-noble
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std::chrono::locate_zone("Asia/Chungking") fails
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
** Changed in: tzdata (Ubuntu)
Status: New => Fix Committed
** Changed in: tzdata (Ubuntu)
Importance: Undecided => Medium
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Title:
std::chrono::locate_zone("Asia/Chungking") fails
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
This bug report is misleading, because Asia/Chungking is not a symlink
to another symlink:
```
$ ls -l /usr/share/zoneinfo/Asia/Chungking /usr/share/zoneinfo/Asia/Shanghai
lrwxrwxrwx 1 root root 8 Apr 5 20:24 /usr/share/zoneinfo/Asia/Chungking ->
Shanghai
-rw-r--r-- 1 root root 561 Apr 5 20:24 /usr/share/zoneinfo/Asia/Shanghai
```
Asia/Chungking is part of tzdata-legacy and this package is probably not
installed.
Anyways, I'll replace the symlinks that point to symlinks.
** Description changed:
forwarded from
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114770
+
+ ```
+ #include
+ int main()
+ {
+ (void) std::chrono::locate_zone("Asia/Chungking");
+ }
+ ```
+
+ With the latest tzdata (version 2024a-2) on Debian Sid this fails:
+
+ terminate called after throwing an instance of 'std::runtime_error'
+ what(): tzdb: cannot locate zone: Asia/Chungking
+ Aborted (core dumped)
+
+ The problem is a Debian patch that enables link chaining, so that one link
can have another link as its target:
+
https://sources.debian.org/patches/tzdata/2024a-2/ziguard.awk-Move-link-to-link-feature-from-vanguard-to-ma.patch/
+
+ This feature was added to tzdata in 2022, but isn't compatible with the
+ expectations of the C++20 standard. When chrono::locate_zone finds a
+ link, it expects its target to be a zone, not another link.
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Title:
std::chrono::locate_zone("Asia/Chungking") fails
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[Bug 2062522] Re: std::chrono::locate_zone("Asia/Chungking") fails
** Also affects: tzdata (Ubuntu)
Importance: Undecided
Status: New
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Title:
std::chrono::locate_zone("Asia/Chungking") fails
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