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misc/cgo/testshared: test that types and itabs are unique

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Make sure that the same type and itab generated in two
different shared library are actually the same thing.

Change-Id: Ica45862d65ff8bc7ad04d59a41f57223f71224cd
Reviewed-on: https://go-review.googlesource.com/35115
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Keith Randall 2017-01-11 15:02:16 -08:00
parent fdde7ba2a2
commit 08da8201ca
5 changed files with 79 additions and 0 deletions
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11
misc/cgo/testshared/shared_test.go
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@ -815,3 +815,14 @@ func TestImplicitInclusion(t *testing.T) {
goCmd(t, "install", "-linkshared", "implicitcmd")
run(t, "running executable linked against library that contains same package as it", "./bin/implicitcmd")
}
// Tests to make sure that the type fields of empty interfaces and itab
// fields of nonempty interfaces are unique even across modules,
// so that interface equality works correctly.
func TestInterface(t *testing.T) {
goCmd(t, "install", "-buildmode=shared", "-linkshared", "iface_a")
// Note: iface_i gets installed implicitly as a dependency of iface_a.
goCmd(t, "install", "-buildmode=shared", "-linkshared", "iface_b")
goCmd(t, "install", "-linkshared", "iface")
run(t, "running type/itab uniqueness tester", "./bin/iface")
}