Fix tests for inverted linetable

JuliaLang/julia#52415 introduced a fundamental
change in how line information is encoded. Because this package delves
into internals, there were a couple tests that failed on Julia 1.12+.
This adds a utility, `CodeTracking.linetable_scopes`, that makes it
easier to work with the new representation across Julia versions.

Author: timholy

src/CodeTracking.jl

@@ -98,7 +98,7 @@ Otherwise `loc` will be `(filepath, line)`.
 """
 function whereis(sf::StackTraces.StackFrame)
     sf.linfo === nothing && return nothing
-    return whereis(sf, sf.linfo.def)
+    return whereis(sf, getmethod(sf.linfo))
 end
 
 """

src/utils.jl

@@ -179,7 +179,7 @@ function linerange(def::Expr)
 end
 linerange(arg) = linerange(convert(Expr, arg))  # Handle Revise's RelocatableExpr
 
-function findline(ex, order)
+function findline(ex::Expr, order)
     ex.head === :line && return ex.args[1], true
     for a in order(ex.args)
         a isa LineNumberNode && return a.line, true
@@ -194,6 +194,27 @@ end
 fileline(lin::LineInfoNode)   = String(lin.file), lin.line
 fileline(lnn::LineNumberNode) = String(lnn.file), lnn.line
 
+if VERSION ≥ v"1.12.0-DEV.173"   # https://github.com/JuliaLang/julia/pull/52415
+    function linetable_scopes(m::Method)
+        src = Base.uncompressed_ast(m)
+        lts = [Vector{Base.Compiler.IRShow.LineInfoNode}() for _ = eachindex(src.code)]
+        for pc = eachindex(src.code)
+            Base.IRShow.append_scopes!(lts[pc], pc, src.debuginfo, m)
+        end
+        return lts
+    end
+else
+    function linetable_scopes(m::Method)
+        src = Base.uncompressed_ast(m)
+        lt, cl = src.linetable, src.codelocs
+        return [iszero(cl[pc]) ? Core.LineInfoNode[] : [lt[cl[pc]]] for pc = eachindex(cl)]
+    end
+end
+
+getmethod(m::Method) = m
+getmethod(mi::Core.MethodInstance) = getmethod(mi.def)
+getmethod(ci::Core.CodeInstance) = getmethod(ci.def)
+
 # This regex matches the pseudo-file name of a REPL history entry.
 const rREPL = r"^REPL\[(\d+)\]$"
 # Match anonymous function names

test/runtests.jl

@@ -129,13 +129,13 @@ isdefined(Main, :Revise) ? Main.Revise.includet("script.jl") : include("script.j
         @info "hello"
     end
     m = first(methods(f150))
-    src = Base.uncompressed_ast(m)
-    idx = findfirst(lin -> String(lin.file) == @__FILE__, src.linetable)
-    lin = src.linetable[idx]
+    scopes = CodeTracking.linetable_scopes(m)
+    idx = findfirst(sc -> all(lin -> String(lin.file) == @__FILE__, sc), scopes)
+    lin = first(scopes[idx])
     file, line = whereis(lin, m)
     @test endswith(file, String(lin.file))
-    idx = findfirst(lin -> String(lin.file) != @__FILE__, src.linetable)
-    lin = src.linetable[idx]
+    idx = findfirst(sc -> !all(lin -> String(lin.file) == @__FILE__, sc), scopes)
+    lin = first(scopes[idx])
     file, line = whereis(lin, m)
     if !Sys.iswindows()
         @test endswith(file, String(lin.file))