Add another workaround for #184 (#187)

See discussion in #185 Co-authored-by: Chris Rackauckas <[email protected]>
JuliaDebug · Aug 1, 2021 · 571a905 · 571a905
1 parent 18e558f
commit 571a905
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/src/backedges.jl b/src/backedges.jl
@@ -86,10 +86,10 @@ specTypes(mi::MethodInstance) = mi.specTypes
 instance(mi::MethodInstance) = mi
 nextnode(mi, edge) = edge
 
-instance(sfs::Vector{StackTraces.StackFrame}) = sfs[end].linfo
+instance(sfs::Vector{StackTraces.StackFrame}) = isempty(sfs) ? Core.Compiler.Timings.ROOTmi : sfs[end].linfo
 method(sfs::Vector{StackTraces.StackFrame}) = method(instance(sfs))
 
-instance(ipframes::Vector{IPFrames}) = isempty(ipframes) ? nothing : instance(ipframes[1].sfs)
+instance(ipframes::Vector{IPFrames}) = isempty(ipframes) ? Core.Compiler.Timings.ROOTmi : instance(ipframes[1].sfs)
 backedges(ipframes::Vector{IPFrames}) = (ret = ipframes[2:end]; isempty(ret) ? () : (ret,))
 
 function callstring(io, mi)

diff --git a/test/runtests.jl b/test/runtests.jl
@@ -432,6 +432,7 @@ fst5(x) = fst4(x)
     tree = Cthulhu.treelist(similar(fst5(1.0), 0))
     @test isempty(tree.data.callstr)
     @test isempty(Cthulhu.callstring(io, similar(stacktrace(fst5(1.0)), 0)))
+    @test Cthulhu.instance(similar(stacktrace(fst5(1.0)), 0)) === Core.Compiler.Timings.ROOTmi
 end
 
 @testset "ascend" begin