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Robert Griesemer 7a21f799a5 cmd/compile: add -url flag, print URL with error messages if applicable
If the -url flag is provided, when encountering a type checking error,
the compiler will also print a URL to a more detailed description of
the error and an example, if available.

Example uses:

        go tool compile -url filename.go
        go build -gcflags=-url pkg/path

For instance, a duplicate declaration of an identifier will report

        https://pkg.go.dev/internal/types/errors#DuplicateDecl

We may refine the provided URL over time.

Change-Id: Iabe3008a49d9dd88bf690f99e4a4a5432dc08786
Reviewed-on: https://go-review.googlesource.com/c/go/+/476716
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2023-03-16 20:22:11 +00:00
.github .github: suggest using private browsing in pkgsite template 2023-01-03 18:52:47 +00:00
api flag: add BoolFunc; FlagSet.BoolFunc 2023-03-16 16:44:21 +00:00
doc doc: start draft Go 1.21 release notes 2023-02-22 18:53:00 +00:00
lib/time time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
misc runtime/cgo: add tsan sync for traceback function 2023-03-08 20:11:59 +00:00
src cmd/compile: add -url flag, print URL with error messages if applicable 2023-03-16 20:22:11 +00:00
test cmd/compile: instrinsify TrailingZeros{8,32,64} for 386 2023-03-14 08:10:32 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
go.env cmd/go: introduce GOROOT/go.env and move proxy/sumdb config there 2023-01-17 23:10:39 +00:00
LICENSE
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README.md README: update from CC-BY-3.0 to CC-BY-4.0 2022-11-02 20:14:56 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +00:00

The Go Programming Language

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