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| author | Robert Griesemer <gri@golang.org> | 2021-01-13 17:00:11 -0800 |
|---|---|---|
| committer | Robert Griesemer <gri@golang.org> | 2021-01-14 17:52:06 +0000 |
| commit | 67bf62d93955fa72c5307f5a2ad0394cb37abd82 (patch) | |
| tree | eeb108c1c968e28bd172a6bed677d3c484298cd5 /src/cmd/compile/internal/types2/typexpr.go | |
| parent | ef5285fbd0636965d916c81dbf87834731f337b2 (diff) | |
| download | go-67bf62d93955fa72c5307f5a2ad0394cb37abd82.tar.gz go-67bf62d93955fa72c5307f5a2ad0394cb37abd82.zip | |
[dev.typeparams] cmd/compile/internal/types2: better error message for invalid ... use
This partially addresses the issue below: In many (all) cases we want to
handle invalid ... use in the parser as a syntax error; but this ensures
that we get a decent error if we get here anyway.
Updates #43680.
Change-Id: I93af43a5f5741d8bc76e7a13c0db75e6edf43111
Reviewed-on: https://go-review.googlesource.com/c/go/+/283475
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Diffstat (limited to 'src/cmd/compile/internal/types2/typexpr.go')
| -rw-r--r-- | src/cmd/compile/internal/types2/typexpr.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/types2/typexpr.go b/src/cmd/compile/internal/types2/typexpr.go index 32377ed3f4..d30f2fef26 100644 --- a/src/cmd/compile/internal/types2/typexpr.go +++ b/src/cmd/compile/internal/types2/typexpr.go @@ -521,6 +521,12 @@ func (check *Checker) typInternal(e0 syntax.Expr, def *Named) (T Type) { typ.elem = check.varType(e.Elem) return typ + case *syntax.DotsType: + // dots are handled explicitly where they are legal + // (array composite literals and parameter lists) + check.error(e, "invalid use of '...'") + check.use(e.Elem) + case *syntax.StructType: typ := new(Struct) def.setUnderlying(typ) |