[Bug libstdc++/75402] New: std::condition_variable::wait_until wakes up constantly
nfitzgerald at mozilla dot com
gcc-bugzilla@gcc.gnu.org
Fri Aug 12 20:22:00 GMT 2016
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=75402
Bug ID: 75402
Summary: std::condition_variable::wait_until wakes up
constantly
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: nfitzgerald at mozilla dot com
Target Milestone: ---
Created attachment 39353
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39353&action=edit
testcase.cpp
Expected:
The thread calling std::condition_variable::wait_until has no (or very very
few) wake ups until the specified timeout
Actual:
The thread is woken up constantly.
std::condition_variable::wait_until ends up passing a bad timespec as the futex
timeout.
----------------
This test case fails with both std::chrono::steady_clock and
std::chrono::system_clock. I didn't test any other clocks.
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