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runtime: make execution error panic values implement the Error interface

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Make execution panics implement Error as
mandated by https://golang.org/ref/spec#Run_time_panics,
instead of panics with strings.

Fixes #14965

Change-Id: I7827f898b9b9c08af541db922cc24fa0800ff18a
Reviewed-on: https://go-review.googlesource.com/21214
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Emmanuel Odeke 2016-03-27 17:29:53 -07:00 • committed by Brad Fitzpatrick
parent 824d8c10fe
commit e4f1d9cf2e
7 changed files with 68 additions and 11 deletions
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2
src/runtime/malloc.go
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@ -793,7 +793,7 @@ func newarray(typ *_type, n uintptr) unsafe.Pointer {
flags |= flagNoScan
}
if int(n) < 0 || (typ.size > 0 && n > _MaxMem/typ.size) {
panic("runtime: allocation size out of range")
panic(plainError("runtime: allocation size out of range"))
}
return mallocgc(typ.size*n, typ, flags)
}