[dev.cmdgo] all: merge master (67f7e16) into dev.cmdgodev.cmdgo

Merge List:

+ 2021-08-27 67f7e16bcc encoding/gob: optimize decoding of []byte
+ 2021-08-27 2c60a99f72 cmd/compile/internal/syntax: make valid type parameter list in presence of errors
+ 2021-08-27 d350a66532 cmd/compile: eagerly CalcStructSize for synthetic ABI types
+ 2021-08-27 d7e2e2ec2b cmd/compile: delay fillinMethods to deal with mutually-recursive types
+ 2021-08-27 c927599783 cmd/compile: eliminate repetitive code
+ 2021-08-27 62f88b6dc8 cmd/compile: add types.RecalcSize
+ 2021-08-27 e7eee5e265 cmd/compile: remove ssagen/pgen_test.go
+ 2021-08-27 f153b6739b cmd/compile: use typecheck.InitUniverse in unit tests
+ 2021-08-26 967a8017f7 cmd/compile: move types init code into package types
+ 2021-08-26 af80af22b5 cmd/compile/internal/types2: do not declare new methods on instantiated types
+ 2021-08-26 03db2c2413 cmd/compile/internal/types2: implement TypeList.String (debugging support)
+ 2021-08-26 c9e05fdcf7 cmd/compile: fix reference to generic type needed by crawler
+ 2021-08-26 eb6a07fcf9 cmd/compile: unexport Type.Vargen
+ 2021-08-26 3836983779 cmd/compile/internal/types: unexport Type.Extra
+ 2021-08-26 1f8d4562de cmd/compile: change typecheck.iscmp into ir.Op.IsCmp

Change-Id: I95c040a0e984a13a3b12c50458148007221ee300

1 files changed, 1 insertions, 4 deletions

diff --git a/src/cmd/compile/internal/syntax/parser.go b/src/cmd/compile/internal/syntax/parser.go
index fd97279f9d7..3d1ca9d6d47 100644
--- a/src/cmd/compile/internal/syntax/parser.go
+++ b/src/cmd/compile/internal/syntax/parser.go
@@ -1924,7 +1924,7 @@ func (p *parser) paramList(name *Name, close token, requireNames bool) (list []*
 	}
 
 	// distribute parameter types (len(list) > 0)
-	if named == 0 {
+	if named == 0 && !requireNames {
 		// all unnamed => found names are named types
 		for _, par := range list {
 			if typ := par.Name; typ != nil {
@@ -1932,9 +1932,6 @@ func (p *parser) paramList(name *Name, close token, requireNames bool) (list []*
 				par.Name = nil
 			}
 		}
-		if requireNames {
-			p.syntaxErrorAt(list[0].Type.Pos(), "type parameters must be named")
-		}
 	} else if named != len(list) {
 		// some named => all must have names and types
 		var pos Pos // left-most error position (or unknown)