https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69503
Bug ID: 69503
Summary: SIGFPE raised when mixing std::async with cilk
Product: gcc
Version: 5.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: vbeffara at gmail dot com
Target Milestone: ---
Created attachment 37481
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37481&action=edit
source file
On Mac OSX 10.11.3, using gcc5 from homebrew, compile the file at
https://gist.github.com/vbeffara/747ea55626f975ca9c39
(and attached) without any optimisation, like so:
g++-5 -Wall -std=c++14 -fcilkplus -lcilkrts sample.cpp
then running the generated executable raises SIGFPE. Which it should not,
especially since the code does nothing. Compiling with -O3 runs fine (all the
code is probably removed); compiling with -ffast-math runs fine (other code
path?); compiling with -g runs fine.
Something to do with cilk_for returning in a different thread than it starts,
failing the assumptions of std::async ?
