Julia 1.8 crashes with @time macro

[RJDennis]

The following MWE causes Julia to crash:

len = 1e16
while len > 1e-8
    a = 0
    @time for i = 1:10_000
        a += 1
    end
    len /= 2
 end

Removing the @time works okay.

versioninfo()
Julia Version 1.8.0
Commit 5544a0f (2022-08-17 13:38 UTC)
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: 24 × AMD Ryzen 9 3900X 12-Core Processor
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-13.0.1 (ORCJIT, znver2)
Threads: 1 on 24 virtual cores

[giordano]

Actually showing the output, for reference:

julia> len = 1e16
1.0e16

julia> while len > 1e-8
           a = 0
           @time for i = 1:10_000
               a += 1
           end
           len /= 2
        end
Internal error: encountered unexpected error in runtime:
BoundsError(a=Array{Core.Compiler.BasicBlock, (26,)}[Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=1, stop=5), preds=Array{Int64, (1,)}[25], succs=Array{Int64, (2,)}[26, 2]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=6, stop=9), preds=Array{Int64, (1,)}[1], succs=Array{Int64, (2,)}[4, 3]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=10, stop=11), preds=Array{Int64, (1,)}[2], succs=Array{Int64, (1,)}[5]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=12, stop=12), preds=Array{Int64, (1,)}[2], succs=Array{Int64, (1,)}[5]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=13, stop=13), preds=Array{Int64, (2,)}[3, 4], succs=Array{Int64, (1,)}[6]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=14, stop=16), preds=Array{Int64, (1,)}[5], succs=Array{Int64, (1,)}[7]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=17, stop=22), preds=Array{Int64, (1,)}[6], succs=Array{Int64, (2,)}[16, 8]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=23, stop=23), preds=Array{Int64, (1,)}[7], succs=Array{Int64, (2,)}[14, 9]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=24, stop=29), preds=Array{Int64, (2,)}[8, 13], succs=Array{Int64, (2,)}[11, 10]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=30, stop=31), preds=Array{Int64, (1,)}[9], succs=Array{Int64, (1,)}[12]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=32, stop=34), preds=Array{Int64, (1,)}[9], succs=Array{Int64, (1,)}[12]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=35, stop=38), preds=Array{Int64, (2,)}[10, 11], succs=Array{Int64, (2,)}[14, 13]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=39, stop=39), preds=Array{Int64, (1,)}[12], succs=Array{Int64, (1,)}[9]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=40, stop=42), preds=Array{Int64, (2,)}[8, 12], succs=Array{Int64, (1,)}[15]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=43, stop=43), preds=Array{Int64, (1,)}[14], succs=Array{Int64, (1,)}[18]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=44, stop=49), preds=Array{Int64, (1,)}[7], succs=Array{Int64, (1,)}[17]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=50, stop=50), preds=Array{Int64, (1,)}[16], succs=Array{Int64, (1,)}[18]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=51, stop=59), preds=Array{Int64, (2,)}[15, 17], succs=Array{Int64, (2,)}[20, 19]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=60, stop=61), preds=Array{Int64, (1,)}[18], succs=Array{Int64, (1,)}[21]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=62, stop=62), preds=Array{Int64, (1,)}[18], succs=Array{Int64, (1,)}[21]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=63, stop=63), preds=Array{Int64, (2,)}[19, 20], succs=Array{Int64, (1,)}[22]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=64, stop=71), preds=Array{Int64, (1,)}[21], succs=Array{Int64, (2,)}[24, 23]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=72, stop=73), preds=Array{Int64, (1,)}[22], succs=Array{Int64, (0,)}[]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=74, stop=101), preds=Array{Int64, (1,)}[22], succs=Array{Int64, (1,)}[25]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=102, stop=109), preds=Array{Int64, (1,)}[24], succs=Array{Int64, (1,)}[1]), Core.Compiler.BasicBlock(stmts=Core.Compiler.StmtRange(start=110, stop=110), preds=Array{Int64, (1,)}[1], succs=Array{Int64, (0,)}[])], i=(0,))
ijl_bounds_error_ints at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/rtutils.c:194
getindex at ./array.jl:924 [inlined]
getindex at ./abstractarray.jl:1244 [inlined]
replace_code_newstyle! at ./compiler/ssair/legacy.jl:61
ir_to_codeinf! at ./compiler/optimize.jl:145 [inlined]
transform_result_for_cache at ./compiler/typeinfer.jl:364 [inlined]
cache_result! at ./compiler/typeinfer.jl:395
_typeinf at ./compiler/typeinfer.jl:277
typeinf at ./compiler/typeinfer.jl:213
typeinf_ext_toplevel at ./compiler/typeinfer.jl:1009
typeinf_ext_toplevel at ./compiler/typeinfer.jl:996
jfptr_typeinf_ext_toplevel_12553.clone_1 at /usr/lib/julia/sys.so (unknown line)
_jl_invoke at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/gf.c:2367 [inlined]
ijl_apply_generic at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/gf.c:2549
jl_apply at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/julia.h:1838 [inlined]
jl_type_infer at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/gf.c:319
jl_toplevel_eval_flex at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/toplevel.c:895
jl_toplevel_eval_flex at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/toplevel.c:850
jl_toplevel_eval_flex at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/toplevel.c:850
ijl_toplevel_eval_in at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/toplevel.c:965
eval at ./boot.jl:368 [inlined]
eval_user_input at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/usr/share/julia/stdlib/v1.8/REPL/src/REPL.jl:151
repl_backend_loop at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/usr/share/julia/stdlib/v1.8/REPL/src/REPL.jl:247
start_repl_backend at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/usr/share/julia/stdlib/v1.8/REPL/src/REPL.jl:232
#run_repl#47 at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/usr/share/julia/stdlib/v1.8/REPL/src/REPL.jl:369
run_repl at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/usr/share/julia/stdlib/v1.8/REPL/src/REPL.jl:355
jfptr_run_repl_67214.clone_1 at /usr/lib/julia/sys.so (unknown line)
_jl_invoke at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/gf.c:2367 [inlined]
ijl_apply_generic at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/gf.c:2549
#966 at ./client.jl:419
jfptr_YY.966_46273.clone_1 at /usr/lib/julia/sys.so (unknown line)
_jl_invoke at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/gf.c:2367 [inlined]
ijl_apply_generic at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/gf.c:2549
jl_apply at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/julia.h:1838 [inlined]
jl_f__call_latest at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/builtins.c:774
#invokelatest#2 at ./essentials.jl:729 [inlined]
invokelatest at ./essentials.jl:726 [inlined]
run_main_repl at ./client.jl:404
exec_options at ./client.jl:318
_start at ./client.jl:522
jfptr__start_30463.clone_1 at /usr/lib/julia/sys.so (unknown line)
_jl_invoke at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/gf.c:2367 [inlined]
ijl_apply_generic at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/gf.c:2549
jl_apply at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/julia.h:1838 [inlined]
true_main at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/jlapi.c:575
jl_repl_entrypoint at /cache/build/default-amdci4-3/julialang/julia-release-1-dot-8/src/jlapi.c:719
main at julia (unknown line)
unknown function (ip: 0x7fbaa1a172cf)
__libc_start_main at /usr/bin/../lib/libc.so.6 (unknown line)
unknown function (ip: 0x401098)

[gbaraldi]

Looks like a dupe of #45600 which is apparently fixed

[ianatol]

I think #46388 just needs to be backported. On master this does not crash

[giordano]

I can confirm this is fixed in master. #46388 is already in the backport PR #46376, so this issue can be closed now.