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cmd/cgo: unwrap typedef-chains before type checking

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clang can emit some dwarf.VoidType which are wrapped by multiple
dwarf.TypedefType. We need to unwrap those before further processing.

Fixes #20129

Change-Id: I671ce6aef2dc7b55f1a02aec5f9789ac1b369643
Reviewed-on: https://go-review.googlesource.com/44772
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Hiroshi Ioka 2017-06-04 12:11:19 +09:00 • committed by Ian Lance Taylor
parent e25fdb968c
commit 289a8719ce
3 changed files with 35 additions and 1 deletions
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2
src/cmd/cgo/gcc.go
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@ -2286,7 +2286,7 @@ func (c *typeConv) FuncType(dtype *dwarf.FuncType, pos token.Pos) *FuncType {
}
var r *Type
var gr []*ast.Field
if _, ok := dtype.ReturnType.(*dwarf.VoidType); ok {
if _, ok := base(dtype.ReturnType).(*dwarf.VoidType); ok {
gr = []*ast.Field{{Type: c.goVoid}}
} else if dtype.ReturnType != nil {
r = c.Type(unqual(dtype.ReturnType), pos)