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runtime/debug: provide Addr method for errors from SetPanicOnFault

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When we're building a panic that's triggered by a memory fault when
SetPanicOnFault has been called, include an Addr method. This
method reports the address at which the fault occurred.

Fixes #37023

RELNOTE=yes

Change-Id: Idff144587d6b75070fdc861a36efec76f4ec7384
Reviewed-on: https://go-review.googlesource.com/c/go/+/249677
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Keith Randall <khr@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Keith Randall 2020-08-20 14:22:30 -07:00
parent 65dfe4a772
commit d91d0762c7
7 changed files with 86 additions and 4 deletions
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5
src/runtime/panic.go
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@ -212,6 +212,11 @@ func panicmem() {
panic(memoryError)
}
func panicmemAddr(addr uintptr) {
panicCheck2("invalid memory address or nil pointer dereference")
panic(errorAddressString{msg: "invalid memory address or nil pointer dereference", addr: addr})
}
// Create a new deferred function fn with siz bytes of arguments.
// The compiler turns a defer statement into a call to this.
//go:nosplit