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runtime: preallocate panic errors for index and slice

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This avoids allocating at the panic sites.

LGTM=r, khr
R=golang-codereviews, r, khr
CC=dvyukov, golang-codereviews, iant, khr
https://golang.org/cl/136020043
This commit is contained in:
Russ Cox 2014-08-30 14:18:41 -04:00
parent 47d6af2f68
commit 7006aafdcd
1 changed files with 6 additions and 2 deletions
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8
src/pkg/runtime/panic.go
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@ -4,10 +4,14 @@
package runtime
var indexError = error(errorString("index out of range"))
func panicindex() {
panic(errorString("index out of range"))
panic(indexError)
}
var sliceError = error(errorString("slice bounds out of range"))
func panicslice() {
panic(errorString("slice bounds out of range"))
panic(sliceError)
}