259fd8adbb
In the previous CL, I had incorrectly removed one of the error messages from issue20232.go, because I thought go/constant was just handling it. But actually the compiler was panicking in nodlit, because it didn't handle constant.Unknown. So this CL makes it leave n.Type == nil for unknown constant.Values. While here, also address #42732 by making sure to report an error message when origConst is called with an unknown constant.Value (as can happen when multiplying two floating-point constants overflows). Finally, add OXOR and OBITNOT to the list of operations to report errors about, since they're also constant expressions that can produce a constant with a greater bit length than their operands. Fixes #42732. Change-Id: I4a538fbae9b3ac4c553d7de5625dc0c87d9acce3 Reviewed-on: https://go-review.googlesource.com/c/go/+/272928 Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org> |
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