# Segmentation fault when a try to catch a InterruptException
**URL:** https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285
**Category:** General Usage
**Tags:** interruptexception
**Created:** [February 24, 2017, 8:02pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285 "2017-02-24T20:02:11Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@Alvaro\_M](https://discourse.julialang.org/u/Alvaro_M)
#### Post date: [February 24, 2017, 8:02pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285/1 "2017-02-24T20:02:11Z")
Hi,
I have this code, I’m trying to catch a keyboard interrupt, but what a get it a segmentation fault
```julia
try
for i in 1:10
println(i)
sleep(0.5)
end
catch err
if isa(err, InterruptException)
exit()
end
rethrow
end
```
**Version 0.5.1-pre+55 (2017-02-13 09:11 UTC)**
_Commit 8d4ef37 (11 days old release-0.5)_\*
**x86\_64-linux-gnu**
Regards.
Álvaro.
---
### Author:  [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)
#### Post date: [February 24, 2017, 8:06pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285/2 "2017-02-24T20:06:50Z")
As a note, it seems to work fine on the master branch.
---
### Author:  [@yuyichao](https://discourse.julialang.org/u/yuyichao)
#### Post date: [February 24, 2017, 8:08pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285/3 "2017-02-24T20:08:21Z")
Also the `rethrow` line won’t actually throw anything and are you sure it’s actually an segfault?
---
### Author:  [@Alvaro\_M](https://discourse.julialang.org/u/Alvaro_M)
#### Post date: [February 24, 2017, 8:15pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285/4 "2017-02-24T20:15:11Z")
Yes it is a segfault, signal 11.
I’m recompiling everything
```julia
make cleanall
make
```
And still getting a segfault:
```julia
unknown function (ip: 0x40176d)
unknown function (ip: 0x401256)
__libc_start_main at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
unknown function (ip: 0x40129a)
unknown function (ip: 0xffffffffffffffff)
Allocations: 966693 (Pool: 965785; Big: 908); GC: 0
signal (11): Violación de segmento
```
---
### Author:  [@Alvaro\_M](https://discourse.julialang.org/u/Alvaro_M)
#### Post date: [February 24, 2017, 9:21pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285/5 "2017-02-24T21:21:42Z")
Hi again,
I delete all and install from master, and still get:
```julia
signal (2): Interrupción
while loading /home/x/test.jl, in expression starting on line 1
syscall at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
4
uv__epoll_wait at /home/x/src/julia/deps/srccache/libuv-52d72a52cc7ccd570929990f010ed16e2ec604c8/src/unix/linux-syscalls.c:321
uv__io_poll at /home/x/src/julia/deps/srccache/libuv-52d72a52cc7ccd570929990f010ed16e2ec604c8/src/unix/linux-core.c:267
uv_run at /home/x/src/julia/deps/srccache/libuv-52d72a52cc7ccd570929990f010ed16e2ec604c8/src/unix/core.c:354
process_events at ./libuv.jl:83
wait at ./event.jl:171
wait at ./event.jl:27
wait at ./event.jl:344
sleep at ./event.jl:385
macro expansion at /home/x/test.jl:4 [inlined]
anonymous at ./ (unknown line)
jl_call_method_internal at /home/x/src/julia/src/julia_internal.h:248 [inlined]
jl_toplevel_eval_flex at /home/x/src/julia/src/toplevel.c:589
jl_parse_eval_all at /home/x/src/julia/src/ast.c:874
jl_load at /home/x/src/julia/src/toplevel.c:616
include_from_node1 at ./loading.jl:539
unknown function (ip: 0x7f72cc9b9e6b)
jl_call_method_internal at /home/x/src/julia/src/julia_internal.h:248 [inlined]
jl_apply_generic at /home/x/src/julia/src/gf.c:2212
include at ./sysimg.jl:14
unknown function (ip: 0x7f72cc87332b)
jl_call_method_internal at /home/x/src/julia/src/julia_internal.h:248 [inlined]
jl_apply_generic at /home/x/src/julia/src/gf.c:2212
process_options at ./client.jl:305
_start at ./client.jl:371
unknown function (ip: 0x7f72cc9e6478)
jl_call_method_internal at /home/x/src/julia/src/julia_internal.h:248 [inlined]
jl_apply_generic at /home/x/src/julia/src/gf.c:2212
unknown function (ip: 0x401cb1)
unknown function (ip: 0x401502)
__libc_start_main at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
unknown function (ip: 0x4015a9)
unknown function (ip: 0xffffffffffffffff)
Allocations: 1091447 (Pool: 1090170; Big: 1277); GC: 0
```
Am I doing something wrong or it’s time to open a issue?
Thanks.
Álvaro.
---
### Author:  [@yuyichao](https://discourse.julialang.org/u/yuyichao)
#### Post date: [February 24, 2017, 9:46pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285/6 "2017-02-24T21:46:47Z")
It seems that you are running from a script and this is the expected behavior. Note that this is not a segfault.
---
### Author:  [@yuyichao](https://discourse.julialang.org/u/yuyichao)
#### Post date: [February 24, 2017, 9:52pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285/7 "2017-02-24T21:52:48Z")
Also note that in a script, you need to do `ccall(:jl_exit_on_sigint, Void, (Cint,), 0)` in order to turn a `SIGINT` into an exception. I have no idea why it is like this but it has been like this forever and doesn’t seem to be well documented…
---
### Author:  [@Alvaro\_M](https://discourse.julialang.org/u/Alvaro_M)
#### Post date: [February 24, 2017, 9:55pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285/8 "2017-02-24T21:55:02Z")
Yes, now in dev-0.6.0 doesn’t throw a segfault in 0.5.1 I still get a segfault.
Either way, I can’t catch the Interrupt exception with the script.
Update: The code works in the REPL.
---
### Author:  [@yuyichao](https://discourse.julialang.org/u/yuyichao)
#### Post date: [February 24, 2017, 10:42pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285/9 "2017-02-24T22:42:08Z")
See my comment above.
---
### Author:  [@Alvaro\_M](https://discourse.julialang.org/u/Alvaro_M)
#### Post date: [February 24, 2017, 10:48pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-a-try-to-catch-a-interruptexception/2285/10 "2017-02-24T22:48:08Z")
Sorry, I didn’t read it.
It works now.
Thank you.