x/tools/gopls: "could not compute pos to range for %v: %v" bug (reported by telemetry)

[adonovan]

#!stacks
"bug.Reportf" &&
 "typeErrorsToDiagnostics.func1" && 
/* keep consistent with #66766, which claims these particular lines. */
 !("typeErrorsToDiagnostics.func1:+28" ||
  "typeErrorsToDiagnostics.func1:+34" ||
  "typeErrorsToDiagnostics.func1:+35" ||
  "typeErrorsToDiagnostics.func1:+37") && 
/* keep consistent with #66765, which claims these particular lines. */
 !("typeErrorsToDiagnostics.func1:+40" || 
   "typeErrorsToDiagnostics.func1:+46" ||
    "typeErrorsToDiagnostics.func1:+53")

This stack q8FyvQ was reported by telemetry:

Note variants:

• bug.Reportf("TypeErrorEndPos returned invalid end: %v", err)
• bug.Reportf("ReadGo116ErrorData returned invalid end: %v", err)

gopls/bug
golang.org/x/tools/gopls/internal/util/bug.report:+35
golang.org/x/tools/gopls/internal/util/bug.Reportf:+1
golang.org/x/tools/gopls/internal/cache.typeErrorsToDiagnostics.func1:+50
golang.org/x/tools/gopls/internal/cache.typeErrorsToDiagnostics:+119
golang.org/x/tools/gopls/internal/cache.(*typeCheckBatch).checkPackage:+127
golang.org/x/tools/gopls/internal/cache.(*typeCheckBatch).handleSyntaxPackage:+70
golang.org/x/tools/gopls/internal/cache.(*Snapshot).forEachPackageInternal.func2:+1
golang.org/x/sync/errgroup.(*Group).Go.func1:+3
runtime.goexit:+0

golang.org/x/tools/gopls@v0.15.0-pre.4 go1.21.5 darwin/amd64 vscode (1)

Issue created by golang.org/x/tools/gopls/internal/telemetry/cmd/stacks.

Dups: rnoW6w 7zL2qQ pT-4Ug PDXPlA RejVIw CBGyxQ AG72cA Lf-3ww TXfuyw NpHz4A NUG3VA nx1sgQ XhpSpw inMjhQ xGkpxA I--gxw SzTdTg jnwzRQ PaGQHg a5dSRQ 7X_4Cw 2NJNRA VCjf_A NTT8dw eZcO4A 1fsLNw GCu04Q MIeniQ wTpoFg rU_Dkg ql0rDg CS1tIw jZRJwg RF0JUA 4FZKrw qhUMCw oLyNmw 9GMErQ eAFucg 6RQyHA yjlQaA RM4Dwg APbRMw npXGxA HMR3TQ mRAp_w EL4dAg Fo2j8A WO4dKQ qcERXw zo72mg DRR6_Q U5kTsA

[gopherbot]

Change https://go.dev/cl/567416 mentions this issue: gopls/internal/cache: add debug assertions for bug report