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cmd/compile/internal/syntax: correct an error string

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When we have an error in a function type used in an expression
we don't know until we see an opening { whether we have a function
literal or a function type. Use "function type" as context because
that's always correct in the specific error message.

Change-Id: I9aad8fcddf31ae53daa53cebd2c2001f08eabde0
Reviewed-on: https://go-review.googlesource.com/c/go/+/401316
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
This commit is contained in:
Robert Griesemer 2022-04-20 12:05:30 -07:00
parent c75befeec2
commit e49b80a754
2 changed files with 3 additions and 2 deletions
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2
src/cmd/compile/internal/syntax/parser.go
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@ -991,7 +991,7 @@ func (p *parser) operand(keep_parens bool) Expr {
case _Func: case _Func:
pos := p.pos() pos := p.pos()
p.next() p.next()
_, ftyp := p.funcType("function literal") _, ftyp := p.funcType("function type")
if p.tok == _Lbrace { if p.tok == _Lbrace {
p.xnest++ p.xnest++

3
src/cmd/compile/internal/syntax/testdata/issue48382.go vendored
View File

@ -8,7 +8,8 @@ type _ func /* ERROR function type must have no type parameters */ [ /* ERROR em
type _ func /* ERROR function type must have no type parameters */ [ x /* ERROR missing type constraint */ ]() type _ func /* ERROR function type must have no type parameters */ [ x /* ERROR missing type constraint */ ]()
type _ func /* ERROR function type must have no type parameters */ [P any]() type _ func /* ERROR function type must have no type parameters */ [P any]()
var _ = func /* ERROR function literal must have no type parameters */ [P any]() {} var _ = (func /* ERROR function type must have no type parameters */ [P any]())(nil)
var _ = func /* ERROR function type must have no type parameters */ [P any]() {}
type _ interface{ type _ interface{
m /* ERROR interface method must have no type parameters */ [P any]() m /* ERROR interface method must have no type parameters */ [P any]()