LinearAlgebra with BigFloat edgecases crash Julia

[SouthEndMusic]

This code crashes my Julia REPL (so it doesn't just throw an error):

A = zeros(BigFloat, 0, 5)
b = zeros(BigFloat, 0)

A \ b

error:

Exception: EXCEPTION_ACCESS_VIOLATION at 0x224e2c1defa -- == at .\promotion.jl:521 [inlined]
== at .\pointer.jl:278 [inlined]
unsafe_convert at .\mpfr.jl:145 [inlined]
isnan at .\mpfr.jl:983 [inlined]
== at .\mpfr.jl:873 [inlined]
iszero at .\mpfr.jl:988 [inlined]
generic_trimatdiv! at C:\workdir\usr\share\julia\stdlib\v1.10\LinearAlgebra\src\triangular.jl:1140
in expression starting at c:\Users\konin_bt\SciML\runner.jl:39
== at .\promotion.jl:521 [inlined]
== at .\pointer.jl:278 [inlined]
unsafe_convert at .\mpfr.jl:145 [inlined]
isnan at .\mpfr.jl:983 [inlined]
== at .\mpfr.jl:873 [inlined]
iszero at .\mpfr.jl:988 [inlined]
generic_trimatdiv! at C:\workdir\usr\share\julia\stdlib\v1.10\LinearAlgebra\src\triangular.jl:1140
_ldiv! at C:\workdir\usr\share\julia\stdlib\v1.10\LinearAlgebra\src\triangular.jl:752 [inlined]
ldiv! at C:\workdir\usr\share\julia\stdlib\v1.10\LinearAlgebra\src\triangular.jl:757 [inlined]
_wide_qr_ldiv! at C:\workdir\usr\share\julia\stdlib\v1.10\LinearAlgebra\src\qr.jl:641
ldiv! at C:\workdir\usr\share\julia\stdlib\v1.10\LinearAlgebra\src\qr.jl:665
ldiv! at C:\workdir\usr\share\julia\stdlib\v1.10\LinearAlgebra\src\qr.jl:673 [inlined]
ldiv! at C:\workdir\usr\share\julia\stdlib\v1.10\LinearAlgebra\src\qr.jl:678
ldiv at C:\workdir\usr\share\julia\stdlib\v1.10\LinearAlgebra\src\LinearAlgebra.jl:572
\ at C:\workdir\usr\share\julia\stdlib\v1.10\LinearAlgebra\src\LinearAlgebra.jl:547 [inlined]
\ at C:\workdir\usr\share\julia\stdlib\v1.10\LinearAlgebra\src\generic.jl:1126
unknown function (ip: 00000224e2c285cf)
jl_apply at C:/workdir/src\julia.h:1982 [inlined]
do_call at C:/workdir/src\interpreter.c:126
eval_value at C:/workdir/src\interpreter.c:223
eval_stmt_value at C:/workdir/src\interpreter.c:174 [inlined]
eval_body at C:/workdir/src\interpreter.c:635
jl_interpret_toplevel_thunk at C:/workdir/src\interpreter.c:775
jl_toplevel_eval_flex at C:/workdir/src\toplevel.c:934
jl_toplevel_eval_flex at C:/workdir/src\toplevel.c:877
ijl_toplevel_eval at C:/workdir/src\toplevel.c:943 [inlined]
ijl_toplevel_eval_in at C:/workdir/src\toplevel.c:985
eval at .\boot.jl:385 [inlined]
include_string at .\loading.jl:2076
jl_apply at C:/workdir/src\julia.h:1982 [inlined]
jl_f__call_latest at C:/workdir/src\builtins.c:812
jl_apply at C:/workdir/src\julia.h:1982 [inlined]
do_apply at C:/workdir/src\builtins.c:768
#invokelatest#2 at .\essentials.jl:892
jl_apply at C:/workdir/src\julia.h:1982 [inlined]
do_apply at C:/workdir/src\builtins.c:768
invokelatest at .\essentials.jl:889
jl_apply at C:/workdir/src\julia.h:1982 [inlined]
do_apply at C:/workdir/src\builtins.c:768
...

but with Float64 it runs fine and results in

5-element Vector{Float64}:
 0.0
 0.0
 0.0
 0.0
 0.0

Output from versioninfo():

Julia Version 1.10.4
Commit 48d4fd4843 (2024-06-04 10:41 UTC)
Build Info:
  Official https://julialang.org/ release        
Platform Info:
  OS: Windows (x86_64-w64-mingw32)
  CPU: 24 × 12th Gen Intel(R) Core(TM) i7-12800HX
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, alderlake)
Threads: 16 default, 0 interactive, 8 GC (on 24 virtual cores)
Environment:
  JULIA_EDITOR = code
  JULIA_NUM_THREADS = 16
  JULIA_PKG_PRESERVE_TIERED_INSTALLED = true
  JULIA_PKG_USE_CLI_GIT = true

[mbauman]

I can reproduce on my macOS with both v1.10.4 and v1.11-rc1, but it's fixed on v1.12 (was on b2657a5dd3e from 22 days ago).

[nsajko]

Fixed with 8945914d4f86cd38f1b079cfc916f881eddbb3c2, PR JuliaLang/julia#54201

[nsajko]

MWE: ./julia -g2 --check-bounds=yes -e 'zeros(BigFloat,0,5) \ zeros(BigFloat,0)'