Comment 1:

You should attach a minimal set of files that fail.

Comment 2:

$ cat p_test.go
// Comment.
package modsql
import "testing"
func TestBlob(t *testing.T) { println("hello") }
// +build sqlite
$ go test -v 
can't load package: package testa: no Go source files in /home/remy/travail/go/src/testa
$ go test -v -tags sqlite
=== RUN TestBlob
hello
--- PASS: TestBlob (0.00 seconds)
PASS
ok      testa   0.006s

Comment 3 by raul.san@sent.com:

Note that I use a build constraint in the middle of my code because I'm testing the
output of a function which generates files with that header.
$ cat p_test.go
// Comment.
package foo
import ("fmt"; "testing")
func TestBlob(t *testing.T) { println("hello") }
func ExampleSQL() {
    fmt.Println("// +build sqlite")
    // Output:
/*
// +build sqlite
*/
}
$ go test -v 
can't load package: package .: no Go source files in /home/neo/go/foo
$ go test -v -tags sqlite
=== RUN TestBlob
hello
--- PASS: TestBlob (0.00 seconds)
=== RUN: ExampleSQL
--- PASS: ExampleSQL (0.00 seconds)
PASS
ok      _/home/neo/go/foo   0.006s

Comment 4:

People always depend on bugs. We have to fix them anyway.
Russ

Comment 5:

Labels changed: added priority-soon, removed priority-triage.

Owner changed to @robpike.

Status changed to Started.

Comment 6:

I think remy has a fix for this

Comment 7:

This issue was closed by revision f087764.

Status changed to Fixed.

Comment 8:

Issue #3992 has been merged into this issue.