EXCEPTION_ACCESS_VIOLATION in libGR.dll

[inkydragon]

The following code crashed julia:
Since the error occurs in libGR, it appears to be an error in the GR backend rather than in julia or Plots.jl.

xref: JuliaLang/julia#55883; JuliaPlots/Plots.jl#5003

using GR

f(x, y) = x + y
x = range(0.93, 0.94, length=500)

contour(x, x, f)  # works well
p = contour(x, x, f; clabels=true)  # <- crash

using GR

f(x, y) = x + y
y = x = range(0.93, 0.94, length=500)
z = f(x, y)
contour(x, y, z; clabels=true)  # works with error msg
# ***   ALL COLLINEAR DATA POINTS.
#   NDP =  500
# ERROR DETECTED IN ROUTINE   IDTANG.
contour(x, y, f; clabels=true)  # <-- crash

Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x70a26af -- gradient.constprop.1 at C:\Users\inkyd\.julia\artifacts\09278fa5603af004623baf9d4731c325b0513e44\bin\libGR.dll (unknown line)
in expression starting at REPL[4]:1
gradient.constprop.1 at C:\Users\inkyd\.julia\artifacts\09278fa5603af004623baf9d4731c325b0513e44\bin\libGR.dll (unknown line)
....

full log

julia> p = contour(x, x, f; clabels=true)

Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x70a26af -- gradient.constprop.1 at C:\Users\inkyd\.julia\artifacts\09278fa5603af004623baf9d4731c325b0513e44\bin\libGR.dll (unknown line)
in expression starting at REPL[4]:1
gradient.constprop.1 at C:\Users\inkyd\.julia\artifacts\09278fa5603af004623baf9d4731c325b0513e44\bin\libGR.dll (unknown line)
label_line.constprop.0 at C:\Users\inkyd\.julia\artifacts\09278fa5603af004623baf9d4731c325b0513e44\bin\libGR.dll (unknown line)
gr_draw_contours at C:\Users\inkyd\.julia\artifacts\09278fa5603af004623baf9d4731c325b0513e44\bin\libGR.dll (unknown line)
gr_contour at C:\Users\inkyd\.julia\artifacts\09278fa5603af004623baf9d4731c325b0513e44\bin\libGR.dll (unknown line)
contour at C:\Users\inkyd\.julia\packages\GR\nDZgF\src\GR.jl:2638
unknown function (ip: 000001d8d78a1099)
plot_data at C:\Users\inkyd\.julia\packages\GR\nDZgF\src\jlgr.jl:1466
plot_data at C:\Users\inkyd\.julia\packages\GR\nDZgF\src\jlgr.jl:1242 [inlined]
plot_data at C:\Users\inkyd\.julia\packages\GR\nDZgF\src\jlgr.jl:1242 [inlined]
#contour#49 at C:\Users\inkyd\.julia\packages\GR\nDZgF\src\jlgr.jl:2149
contour at C:\Users\inkyd\.julia\packages\GR\nDZgF\src\jlgr.jl:2144
unknown function (ip: 000001d8d784632b)
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]
eval_user_input at C:\workdir\usr\share\julia\stdlib\v1.10\REPL\src\REPL.jl:150
repl_backend_loop at C:\workdir\usr\share\julia\stdlib\v1.10\REPL\src\REPL.jl:246
#start_repl_backend#46 at C:\workdir\usr\share\julia\stdlib\v1.10\REPL\src\REPL.jl:231
start_repl_backend at C:\workdir\usr\share\julia\stdlib\v1.10\REPL\src\REPL.jl:228
#run_repl#59 at C:\workdir\usr\share\julia\stdlib\v1.10\REPL\src\REPL.jl:389
run_repl at C:\workdir\usr\share\julia\stdlib\v1.10\REPL\src\REPL.jl:375
jfptr_run_repl_95862.1 at C:\Users\inkyd\.julia\juliaup\julia-1.10.5+0.x64.w64.mingw32\lib\julia\sys.dll (unknown line)
#1013 at .\client.jl:432
jfptr_YY.1013_86638.1 at C:\Users\inkyd\.julia\juliaup\julia-1.10.5+0.x64.w64.mingw32\lib\julia\sys.dll (unknown line)
jl_apply at C:/workdir/src\julia.h:1982 [inlined]
jl_f__call_latest at C:/workdir/src\builtins.c:812
#invokelatest#2 at .\essentials.jl:892 [inlined]
invokelatest at .\essentials.jl:889 [inlined]
run_main_repl at .\client.jl:416
exec_options at .\client.jl:333
_start at .\client.jl:552
jfptr__start_86663.1 at C:\Users\inkyd\.julia\juliaup\julia-1.10.5+0.x64.w64.mingw32\lib\julia\sys.dll (unknown line)
jl_apply at C:/workdir/src\julia.h:1982 [inlined]
true_main at C:/workdir/src\jlapi.c:582
jl_repl_entrypoint at C:/workdir/src\jlapi.c:731
mainCRTStartup at C:/workdir/cli\loader_exe.c:58
BaseThreadInitThunk at C:\WINDOWS\System32\KERNEL32.DLL (unknown line)
RtlUserThreadStart at C:\WINDOWS\SYSTEM32\ntdll.dll (unknown line)
Allocations: 8177138 (Pool: 8169080; Big: 8058); GC: 12

Version info

• GR v0.73.7
• julia 1.10.5

julia> versioninfo()
Julia Version 1.10.5
Commit 6f3fdf7b36 (2024-08-27 14:19 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Windows (x86_64-w64-mingw32)
  CPU: 32 × 13th Gen Intel(R) Core(TM) i9-13900HX
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, goldmont)
Threads: 1 default, 0 interactive, 1 GC (on 32 virtual cores)

• julia v1.11.1, same crash

[jheinen]

I can't reproduce the problem on macOS or Linux. I will check it on a Windows box when I'm back in office ...

[jheinen]

The problem is fixed in this commit. A new release is planned for Mid-November.

[inkydragon]

With GR v0.73.9, now it works.