Closed
Description
openedon Feb 6, 2023
The following script segfaults (reliably on my x86 mac, sporadically on arm) for any input N where N ≥ 2^31 && N % 16 ≠ 0.
N = 2^31+1
open("test.data", "w") do io
truncate(io, N)
end
s = String(read("test.data"))
@show objectid(s)I discovered this working with (unintentionally) large strings that were constructed in code rather than read from a file, but I haven't been able to reproduce the bug minimally without a read.
➜ dev git:(master) ✗ jd fault.jl
[43504] signal (11.1): Segmentation fault: 11
in expression starting at julia/dev/fault.jl:9
MurmurHash3_x64_128 at julia/dev/src/support/MurmurHash3.c:277
memhash_seed at julia/dev/src/support/hashing.c:74
objectid at ./reflection.jl:359
unknown function (ip: 0x119404ac2)
_jl_invoke at julia/dev/src/gf.c:0 [inlined]
ijl_apply_generic at julia/dev/src/gf.c:2873
jl_apply at julia/dev/src/./julia.h:1880 [inlined]
do_call at julia/dev/src/interpreter.c:125
eval_body at julia/dev/src/interpreter.c:0
jl_interpret_toplevel_thunk at julia/dev/src/interpreter.c:758
jl_toplevel_eval_flex at julia/dev/src/toplevel.c:910
jl_toplevel_eval_flex at julia/dev/src/toplevel.c:853
ijl_toplevel_eval at julia/dev/src/toplevel.c:919 [inlined]
ijl_toplevel_eval_in at julia/dev/src/toplevel.c:969
eval at ./boot.jl:370 [inlined]
include_string at ./loading.jl:1850
_jl_invoke at julia/dev/src/gf.c:0 [inlined]
ijl_apply_generic at julia/dev/src/gf.c:2873
_include at ./loading.jl:1910
include at ./Base.jl:457
jfptr_include_26413 at julia/dev/usr/lib/julia/sys.dylib (unknown line)
_jl_invoke at julia/dev/src/gf.c:0 [inlined]
ijl_apply_generic at julia/dev/src/gf.c:2873
exec_options at ./client.jl:307
_start at ./client.jl:522
jfptr__start_55134 at julia/dev/usr/lib/julia/sys.dylib (unknown line)
_jl_invoke at julia/dev/src/gf.c:0 [inlined]
ijl_apply_generic at julia/dev/src/gf.c:2873
jl_apply at julia/dev/src/./julia.h:1880 [inlined]
true_main at julia/dev/src/jlapi.c:573
jl_repl_entrypoint at julia/dev/src/jlapi.c:717
Allocations: 23154 (Pool: 23120; Big: 34); GC: 1
[1] 43504 segmentation fault jd fault.jl
➜ dev git:(master) ✗ jd
_
_ _ _(_)_ | Documentation: https://docs.julialang.org
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_ _ _| |_ __ _ | Type "?" for help, "]?" for Pkg help.
| | | | | | |/ _` | |
| | |_| | | | (_| | | Version 1.10.0-DEV.503 (2023-02-06)
_/ |\__'_|_|_|\__'_| | Commit a7317c3c72* (0 days old master)
|__/ |
julia> versioninfo()
Julia Version 1.10.0-DEV.503
Commit a7317c3c72* (2023-02-06 13:15 UTC)
Platform Info:
OS: macOS (x86_64-apple-darwin22.2.0)
CPU: 12 × Intel(R) Core(TM) i5-10500 CPU @ 3.10GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-14.0.6 (ORCJIT, skylake)
Threads: 1 on 12 virtual cores
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