| Summary: | gcc-c++ std::nth_element segfaults on valid input | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Ben Webb <ben> |
| Component: | gcc | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 19 | CC: | jakub, laurent.rineau__fedora, law |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2014-01-15 23:52:19 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
A lot of components of the Computational Geometry Algorithms Library (www.cgal.org) segfault because of that bug. The package CGAL-devel-4.2-1.fc19 is impacted. Ubuntu has released a patched version: https://bugs.launchpad.net/ubuntu/+source/gcc-4.8/+bug/1246802 I do not know about other Linux distributions, so far. Seems fixed in libstdc++-devel-4.8.2-7.fc19 |
Description of problem: A valid c++ program like this segfaults: #include <algorithm> int main() { double mm[] = {2, 2, 3, 2}; size_t ms = sizeof(mm) / sizeof(double); std::nth_element(mm, mm+1, mm+ms); } because nth_element is broken The bug has been reported and fixed upstream http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58800 The same problem affects Fedora 20 and has been reported there as bug #1029217.