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cmd/compile/internal/syntax: make valid type parameter list in presence of errors

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Make sure the parser fills in names and types for type parameter
lists, even in the case of errors.

While at it, adjust some of the test functions to accept generic
code and report all syntax errors.

Added offending source as test for types2.

Fixes #47996.

Change-Id: I449bcf5e2cb80fa2a24cdd3945f484bfca218a06
Reviewed-on: https://go-review.googlesource.com/c/go/+/345476
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Robert Griesemer 2021-08-26 14:52:32 -07:00
parent d350a66532
commit 2c60a99f72
4 changed files with 11 additions and 14 deletions
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6
src/cmd/compile/internal/syntax/dumper_test.go
View file

@ -13,11 +13,7 @@ func TestDump(t *testing.T) {
t.Skip("skipping test in short mode")
}
// provide a no-op error handler so parsing doesn't stop after first error
ast, err := ParseFile(*src_, func(error) {}, nil, CheckBranches)
if err != nil {
t.Error(err)
}
ast, _ := ParseFile(*src_, func(err error) { t.Error(err) }, nil, CheckBranches|AllowGenerics)
if ast != nil {
Fdump(testOut(), ast)