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go/doc/next/4-runtime.md
Damien Neil 478ad013f9 runtime: don't duplicate reraised panic values in printpanics 
Change the output printed when crashing with a reraised panic value
to not duplicate that value.

Changes output of panicking with "PANIC", recovering, and reraising
from:

  panic: PANIC [recovered]
    panic: PANIC

to:

  panic: PANIC [recovered, reraised]

Fixes #71517

Change-Id: Id59938c4ea0df555b851ffc650fe6f94c0845499
Reviewed-on: https://go-review.googlesource.com/c/go/+/645916
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-02-06 12:02:14 -08:00

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Runtime

The message printed when a program exits due to an unhandled panic that was recovered and re-raised no longer repeats the text of the panic value.

Previously, a program which panicked with panic("PANIC"), recovered the panic, and then re-panicked with the original value would print:

panic: PANIC [recovered]
  panic: PANIC

This program will now print:

panic: PANIC [recovered, reraised]