cmd/compile/internal/syntax: don't try to parse files in GOROOT/.git

This test was failing locally in my clone of the go repo due to a Git
branch ending in ".go", which the test found and was attempting to
parse as a file. It's fragile to try to parse .go files in
GOROOT/.git, and wasteful to scan GOROOT/pkg and other non-source
directories; instead, let's only parse the directories we actually
expect to contain source files.

(I was running the test for #51461.)

Change-Id: I5d4e31ec2bcd9b4b6840ec32ad9b12bf44f349a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/390023
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>

diff --git a/src/cmd/compile/internal/syntax/parser_test.go b/src/cmd/compile/internal/syntax/parser_test.go
index e258a17c38eaee07acc105bcc7443004472a44af..ecb21e070b0511fd0a1db5aae110cd6cba2a3113 100644 (file)
--- a/src/cmd/compile/internal/syntax/parser_test.go
+++ b/src/cmd/compile/internal/syntax/parser_test.go
@@ -78,7 +78,8 @@ func TestStdLib(t *testing.T) {
        go func() {
                defer close(results)
                for _, dir := range []string{
-                       runtime.GOROOT(),
+                       filepath.Join(runtime.GOROOT(), "src"),
+                       filepath.Join(runtime.GOROOT(), "misc"),
                } {
                        walkDirs(t, dir, func(filename string) {
                                if skipRx != nil && skipRx.MatchString(filename) {