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New crash in subarray test on 64-bit #15508

@nalimilan

Description

@nalimilan

One commit in the range fc469b6...64dbecf (i.e. #15444 by @vtjnash -- again, sorry! :-) introduced a crash in the subarray tests when building the RPM nightlies on 64-bit (but not 32-bit). This is with system LLVM 3.8 plus the Julia patch.

signal (11): Segmentation fault
while loading /builddir/build/BUILD/julia/test/subarray.jl, in expression starting on line 309
[inline] at ./essentials.jl:25
reindex at ./subarray.jl:130
unknown function (ip: 0x7f03698fb260)
[inline] at /builddir/build/BUILD/julia/src/julia_internal.h:69
jl_call_method_internal at /builddir/build/BUILD/julia/src/gf.c:1848
[inline] at ./subarray.jl:91
sub at ./subarray.jl:193
[inline] at /builddir/build/BUILD/julia/src/julia_internal.h:69
jl_call_method_internal at /builddir/build/BUILD/julia/src/gf.c:1848
jl_f__apply at /builddir/build/BUILD/julia/src/builtins.c:512
runtests at /builddir/build/BUILD/julia/test/subarray.jl:221
[inline] at /builddir/build/BUILD/julia/src/julia_internal.h:69
jl_call_method_internal at /builddir/build/BUILD/julia/src/gf.c:1848
[inline] at ./int.jl:28
runviews at /builddir/build/BUILD/julia/test/subarray.jl:249
unknown function (ip: 0x7f0369b236b3)
[inline] at /builddir/build/BUILD/julia/src/julia_internal.h:69
jl_call_method_internal at /builddir/build/BUILD/julia/src/gf.c:1848
[inline] at /builddir/build/BUILD/julia/test/subarray.jl:329
anonymous at ./<no file>:4294967295
unknown function (ip: 0x7f0373dcb420)
[inline] at /builddir/build/BUILD/julia/src/julia_internal.h:69
jl_call_method_internal at /builddir/build/BUILD/julia/src/toplevel.c:552
jl_parse_eval_all at /builddir/build/BUILD/julia/src/ast.c:784
[inline] at ./essentials.jl:79
include_string at ./loading.jl:371
unknown function (ip: 0x7f03b06a3194)
[inline] at /builddir/build/BUILD/julia/src/julia_internal.h:69
jl_call_method_internal at /builddir/build/BUILD/julia/src/gf.c:1848
include_from_node1 at ./loading.jl:420
unknown function (ip: 0x7f05b2593b75)
[inline] at /builddir/build/BUILD/julia/src/julia_internal.h:69
jl_call_method_internal at /builddir/build/BUILD/julia/src/gf.c:1848
[inline] at ./util.jl:180
runtests at /builddir/build/BUILD/julia/test/testdefs.jl:7
#16 at /builddir/build/BUILD/julia/test/runtests.jl:36
unknown function (ip: 0x7f03b0681c33)
[inline] at /builddir/build/BUILD/julia/src/julia_internal.h:69
jl_call_method_internal at /builddir/build/BUILD/julia/src/gf.c:1848
jl_f__apply at /builddir/build/BUILD/julia/src/builtins.c:512
run_work_thunk at ./multi.jl:744
[inline] at ./multi.jl:1040
#255 at ./task.jl:59
[inline] at /builddir/build/BUILD/julia/src/julia_internal.h:69
jl_call_method_internal at /builddir/build/BUILD/julia/src/gf.c:1848
start_task at /builddir/build/BUILD/julia/src/task.c:245
unknown function (ip: (nil))
Allocations: 844523643 (Pool: 844164628; Big: 359015); GC: 2060
    From worker 3:       * subarray             Worker 3 terminated.

https://copr-be.cloud.fedoraproject.org/results/nalimilan/julia-nightlies/fedora-23-x86_64/00168226-julia/build.log.gz

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