Bug 70789 - cilk test fib-tplt.cc occasionally fails
Summary: cilk test fib-tplt.cc occasionally fails
Status: RESOLVED WONTFIX
Alias: None
Product: gcc
Classification: Unclassified
Component: c++ (show other bugs)
Version: 7.0
: P3 normal
Target Milestone: ---
Assignee: Not yet assigned to anyone
URL:
Keywords: wrong-code
Depends on:
Blocks: 69582
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Reported: 2016-04-25 17:36 UTC by Bernd Schmidt
Modified: 2017-12-04 10:58 UTC (History)
2 users (show)

See Also:
Host:
Target: x86_64-pc-linux-gnu
Build:
Known to work:
Known to fail:
Last reconfirmed:


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Description Bernd Schmidt 2016-04-25 17:36:32 UTC
I've had a test run fail with

FAIL: g++.dg/cilk-plus/CK/fib-tplt.cc  -g -fcilkplus execution test

This was while testing the -m32 variant. I've let the test run in a loop for a few hours, and it seems to fail sporadically with a segfault, almost certainly not because of the fairly harmless patch I was testing. I've tried to load the coredump into gdb, unfortunately it's not very informative.

(gdb) bt
#0  0x00001c46 in ?? ()
#1  0xf76d3587 in ?? ()
#2  0xf76d3347 in ?? ()
#3  0x00000000 in ?? ()

Tagging it as wrong-code although I'm not sure whether the testcase is valid. We seem not to have a libcilkrts component.
Comment 1 Paolo Carlini 2017-12-04 10:58:37 UTC
Cilk Plus, deprecated for 7.x, will not be in 8.x.