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interp: better errors when debugging interp

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When debugging is enabled for interp, print better errors in a specific
case.

Before:

    !! revert because of error: interp: unsupported instruction (to be emitted at runtime)

After:

    !! revert because of error: /usr/local/go1.24.0/src/regexp/syntax/parse.go:927:27: interp: unsupported instruction (to be emitted at runtime)

So this adds error location information, which can be quite useful.
This commit is contained in:
Ayke van Laethem
2025-10-01 11:24:19 +02:00
committed by Ron Evans
parent 109e0767e7
commit c820d83ae2
1 changed files with 1 additions and 1 deletions
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interp/interpreter.go
+1 -1
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@@ -577,7 +577,7 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
// runtime instead of at compile time. But we need to
// revert any changes made by the call first.
if r.debug {
fmt.Fprintln(os.Stderr, indent+"!! revert because of error:", callErr.Err)
fmt.Fprintln(os.Stderr, indent+"!! revert because of error:", callErr.Error())
}
callMem.revert()
err := r.runAtRuntime(fn, inst, locals, &mem, indent)