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https://github.com/golang/go
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0782ee3ad5
For incomplete struct S, C.T and C.struct_S were interchangeable in Go 1.2 and earlier, because all incomplete types were interchangeable (even C.struct_S1 and C.struct_S2). CL 76450043, which fixed issue 7409, made different incomplete types different from Go's point of view, so that they were no longer completely interchangeable. However, imprecision about C.T and C.struct_S - really the same underlying C type - is the one behavior enabled by the bug that is most likely to be depended on by existing cgo code. Explicitly allow it, to keep that code working. Fixes #7786. LGTM=iant, r R=golang-codereviews, iant, r CC=golang-codereviews https://golang.org/cl/98580046
52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Issue 7786. No runtime test, just make sure that typedef and struct/union/class are interchangeable at compile time.
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package cgotest
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// struct test7786;
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// typedef struct test7786 typedef_test7786;
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// void f7786(struct test7786 *ctx) {}
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// void g7786(typedef_test7786 *ctx) {}
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//
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// typedef struct body7786 typedef_body7786;
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// struct body7786 { int x; };
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// void b7786(struct body7786 *ctx) {}
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// void c7786(typedef_body7786 *ctx) {}
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//
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// typedef union union7786 typedef_union7786;
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// void u7786(union union7786 *ctx) {}
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// void v7786(typedef_union7786 *ctx) {}
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import "C"
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func f() {
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var x1 *C.typedef_test7786
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var x2 *C.struct_test7786
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x1 = x2
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x2 = x1
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C.f7786(x1)
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C.f7786(x2)
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C.g7786(x1)
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C.g7786(x2)
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var b1 *C.typedef_body7786
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var b2 *C.struct_body7786
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b1 = b2
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b2 = b1
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C.b7786(b1)
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C.b7786(b2)
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C.c7786(b1)
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C.c7786(b2)
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var u1 *C.typedef_union7786
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var u2 *C.union_union7786
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u1 = u2
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u2 = u1
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C.u7786(u1)
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C.u7786(u2)
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C.v7786(u1)
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C.v7786(u2)
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}
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