2c423f063b
A few examples (for accessing a slice of length 3): s[-1] runtime error: index out of range [-1] s[3] runtime error: index out of range [3] with length 3 s[-1:0] runtime error: slice bounds out of range [-1:] s[3:0] runtime error: slice bounds out of range [3:0] s[3:-1] runtime error: slice bounds out of range [:-1] s[3:4] runtime error: slice bounds out of range [:4] with capacity 3 s[0:3:4] runtime error: slice bounds out of range [::4] with capacity 3 Note that in cases where there are multiple things wrong with the indexes (e.g. s[3:-1]), we report one of those errors kind of arbitrarily, currently the rightmost one. An exhaustive set of examples is in issue30116[u].out in the CL. The message text has the same prefix as the old message text. That leads to slightly awkward phrasing but hopefully minimizes the chance that code depending on the error text will break. Increases the size of the go binary by 0.5% (amd64). The panic functions take arguments in registers in order to keep the size of the compiled code as small as possible. Fixes #30116 Change-Id: Idb99a827b7888822ca34c240eca87b7e44a04fdd Reviewed-on: https://go-review.googlesource.com/c/go/+/161477 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com> |
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The Go Programming Language
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