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cgo translates empty function arguments into void instead of dying with 'unexpected type: ...'.

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Fixes #162.

R=rsc
https://golang.org/cl/157147
This commit is contained in:
Eden Li 2009-11-23 22:02:12 -08:00 • committed by Russ Cox
parent c95c27a91f
commit a9d0da75f1
1 changed files with 9 additions and 0 deletions
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9
src/cmd/cgo/gcc.go
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@ -571,6 +571,15 @@ func (c *typeConv) FuncType(dtype *dwarf.FuncType) *FuncType {
p := make([]*Type, len(dtype.ParamType));
gp := make([]*ast.Field, len(dtype.ParamType));
for i, f := range dtype.ParamType {
// gcc's DWARF generator outputs a single DotDotDotType parameter for
// function pointers that specify no parameters (e.g. void
// (*__cgo_0)()). Treat this special case as void. This case is
// invalid according to ISO C anyway (i.e. void (*__cgo_1)(...) is not
// legal).
if _, ok := f.(*dwarf.DotDotDotType); ok && i == 0 {
p, gp = nil, nil;
break;
}
p[i] = c.FuncArg(f);
gp[i] = &ast.Field{Type: p[i].Go};
}