go importC 源码
golang importC 代码
文件路径：/src/cmd/compile/internal/types2/testdata/check/importC.go
// -fakeImportC
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package importC
import "C"
import _ /* ERROR cannot rename import "C" */ "C"
import foo /* ERROR cannot rename import "C" */ "C"
import . /* ERROR cannot rename import "C" */ "C"
// Test cases extracted from issue #22090.
import "unsafe"
const _ C.int = 0xff // no error due to invalid constant type
type T struct {
Name string
Ordinal int
}
func _(args []T) {
var s string
for i, v := range args {
cname := C.CString(v.Name)
args[i].Ordinal = int(C.sqlite3_bind_parameter_index(s, cname)) // no error due to i not being "used"
C.free(unsafe.Pointer(cname))
}
}
type CType C.Type
const _ CType = C.X // no error due to invalid constant type
const _ = C.X
// Test cases extracted from issue #23712.
func _() {
var a [C.ArrayLength]byte
_ = a[0] // no index out of bounds error here
}
// Additional tests to verify fix for #23712.
func _() {
var a [C.ArrayLength1]byte
_ = 1 / len(a) // no division by zero error here and below
_ = 1 / cap(a)
_ = uint(unsafe.Sizeof(a)) // must not be negative
var b [C.ArrayLength2]byte
a = b // should be valid
}
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