Segmentation fault when using ArgParse

[fjarri]

Julia version:

Julia Version 0.7.0-DEV.1165
Commit 1a43098 (2017-07-31 03:33 UTC)
Platform Info:
  OS: Linux (x86_64-pc-linux-gnu)
  CPU: Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz
  WORD_SIZE: 64
  BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Haswell)
  LAPACK: libopenblas64_
  LIBM: libopenlibm
  LLVM: libLLVM-3.9.1 (ORCJIT, haswell)
Environment:

OS: Ubuntu 16.04 x64 (also happens on Travis CI and Appveyor systems).

Installed packages:

julia> Pkg.installed()
Dict{String,VersionNumber} with 3 entries:
  "Compat"   => v"0.29.0"
  "TextWrap" => v"0.2.0"
  "ArgParse" => v"0.5.0"

The program reproducing the error (I tried to isolate it, so that it does not need ArgParse, but did not succeed; for some reason even adding or removing a println() can change whether the error appears or not):

using ArgParse

s = ArgParseSettings()
add_arg_table(s, "arg1", Dict(:nargs=>1, :required=>true))
parse_args([], s)

The result:

signal (11): Segmentation fault
while loading /home/bogdan/repos/ArgParse/test/t.jl, in expression starting on line 5
#parse_args#55 at /home/bogdan/.julia/v0.7/ArgParse/src/ArgParse.jl:1867 [inlined]
parse_args at /home/bogdan/.julia/v0.7/ArgParse/src/ArgParse.jl:1864
jl_call_fptr_internal at /home/centos/buildbot/slave/package_tarball64/build/src/julia_internal.h:366 [inlined]
jl_call_method_internal at /home/centos/buildbot/slave/package_tarball64/build/src/julia_internal.h:385 [inlined]
jl_apply_generic at /home/centos/buildbot/slave/package_tarball64/build/src/gf.c:1929
do_call at /home/centos/buildbot/slave/package_tarball64/build/src/interpreter.c:66
eval at /home/centos/buildbot/slave/package_tarball64/build/src/interpreter.c:246
jl_interpret_toplevel_expr_in at /home/centos/buildbot/slave/package_tarball64/build/src/interpreter.c:46
jl_toplevel_eval_flex at /home/centos/buildbot/slave/package_tarball64/build/src/toplevel.c:582
jl_parse_eval_all at /home/centos/buildbot/slave/package_tarball64/build/src/ast.c:909
jl_load at /home/centos/buildbot/slave/package_tarball64/build/src/toplevel.c:620
include_relative at ./loading.jl:464
jl_call_fptr_internal at /home/centos/buildbot/slave/package_tarball64/build/src/julia_internal.h:366 [inlined]
jl_call_method_internal at /home/centos/buildbot/slave/package_tarball64/build/src/julia_internal.h:385 [inlined]
jl_apply_generic at /home/centos/buildbot/slave/package_tarball64/build/src/gf.c:1929
include at ./sysimg.jl:14
jl_call_fptr_internal at /home/centos/buildbot/slave/package_tarball64/build/src/julia_internal.h:366 [inlined]
jl_call_method_internal at /home/centos/buildbot/slave/package_tarball64/build/src/julia_internal.h:385 [inlined]
jl_apply_generic at /home/centos/buildbot/slave/package_tarball64/build/src/gf.c:1929
process_options at ./client.jl:315
_start at ./client.jl:383
jl_call_fptr_internal at /home/centos/buildbot/slave/package_tarball64/build/src/julia_internal.h:366 [inlined]
jl_call_method_internal at /home/centos/buildbot/slave/package_tarball64/build/src/julia_internal.h:385 [inlined]
jl_apply_generic at /home/centos/buildbot/slave/package_tarball64/build/src/gf.c:1929
unknown function (ip: 0x401ea1)
unknown function (ip: 0x4016b2)
__libc_start_main at /build/glibc-bfm8X4/glibc-2.23/csu/../csu/libc-start.c:291
unknown function (ip: 0x40175c)
Allocations: 4912416 (Pool: 4912039; Big: 377); GC: 11
fish: “julia t.jl” terminated by signal SIGSEGV (Address boundary error)

[yuyichao]

Dup of #17288. LLVM reused the stackslot to save ptls but didn't take into account that it can be modified in the try branch.