Closed
Description
If a task throws an exception it goes down silently. This issue was reported before (#12485) and seemed to be fixed in version 1.1 (#28878), but it popped up (or it didn't) in one of my unit tests. A similar scenario:
broken example
c = Channel{Int}(2)
@async begin
for i in 1:2
for j in 1:2
put!(c, i+j)
end
close(c)
end
end
@sync for _ in 1:Sys.CPU_THREADS
@async for x in c
println(x)
end
end
Output:
2
3
corrected example
c = Channel{Int}(2)
@async begin
for i in 1:2
for j in 1:2
put!(c, i+j)
end
end
close(c) # only line that changed
end
@sync for _ in 1:Sys.CPU_THREADS
@async for x in c
println(x)
end
endOutput:
2
3
3
4
versioninfo
Julia Version 1.1.0
Commit 80516ca202 (2019-01-21 21:24 UTC)
Platform Info:
OS: macOS (x86_64-apple-darwin14.5.0)
CPU: Intel(R) Core(TM) i5-8259U CPU @ 2.30GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-6.0.1 (ORCJIT, skylake)
Environment:
JULIA_NUM_THREADS = 4
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