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cgo: explain how to free something

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R=golang-dev, n13m3y3r, r
CC=golang-dev
https://golang.org/cl/4958053
This commit is contained in:
Russ Cox 2011-08-31 08:17:01 -04:00
parent 335da67e00
commit 0c9ea63b3b
1 changed files with 4 additions and 1 deletions
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5
src/cmd/cgo/doc.go
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@ -72,7 +72,10 @@ the pointer to the first element explicitly: C.f(&x[0]).
A few special functions convert between Go and C types
by making copies of the data. In pseudo-Go definitions:
// Go string to C string - result is not garbage collected
// Go string to C string
// The C string is allocated in the C heap using malloc.
// It is the caller's responsibility to arrange for it to be
// freed, such as by calling C.free.
func C.CString(string) *C.char
// C string to Go string