Bug in Threads.@threads

[yebai]

Running the following code with 4 threads on Julia 0.5 (OS X) produces a repeatable segmentation fault.

Threads.@threads for i = 1:10
           println(Threads.threadid())
end

Error message

3
3
signal (11): Segmentation fault: 11
while loading no file, in expression starting on line 0
sig_match_fast at /Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1809 [inlined]
jl_apply_generic at /Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1892
jl_apply at /Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia.h:1392 [inlined]
start_task at /Users/osx/buildbot/slave/package_osx10_9-x64/build/src/task.c:253
Allocations: 1396745 (Pool: 1395878; Big: 867); GC: 0
Segmentation fault: 11

[yuyichao]

Dup of #14494