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cmd/cgo: silence const warnings

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Fixes #3152.

R=golang-dev, dsymonds, r
CC=golang-dev
https://golang.org/cl/5786047
This commit is contained in:
Russ Cox 2012-03-07 22:40:32 -05:00
parent 94f233574b
commit 43d71e7d7d
1 changed files with 11 additions and 1 deletions
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12
src/cmd/cgo/out.go
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@ -411,10 +411,20 @@ func (p *Package) writeOutputFunc(fgcc *os.File, n *Name) {
}
}
fmt.Fprintf(fgcc, "%s(", n.C)
for i := range n.FuncType.Params {
for i, t := range n.FuncType.Params {
if i > 0 {
fmt.Fprintf(fgcc, ", ")
}
// We know the type params are correct, because
// the Go equivalents had good type params.
// However, our version of the type omits the magic
// words const and volatile, which can provoke
// C compiler warnings. Silence them by casting
// all pointers to void*. (Eventually that will produce
// other warnings.)
if c := t.C.String(); c[len(c)-1] == '*' {
fmt.Fprintf(fgcc, "(void*)")
}
fmt.Fprintf(fgcc, "a->p%d", i)
}
fmt.Fprintf(fgcc, ");\n")