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5d1b53a944
This fixes a bug in -l=3 or higher.
To inline a variadic function, the compiler generates code that constructs
a slice of arguments for the variadic parameter. Consider the function
func Foo(xs ...string)
and the call Foo("hello", "world"). To inline the call to Foo, the
compiler used to generate
xs := [2]string{"hello", "world"}[:]
which doesn't type check:
invalid operation [2]string literal[:] (slice of unaddressable value).
Now, the compiler generates
xs := []string{"hello", "world"}
which does type check.
Fixes #18116.
Change-Id: I0ee531ef2e6cc276db6fb12602b25a46d6d5db21
Reviewed-on: https://go-review.googlesource.com/33671
Reviewed-by: Keith Randall <khr@golang.org>
20 lines
547 B
Go
20 lines
547 B
Go
// errorcheck -0 -m -l=3
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// Copyright 2016 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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// Test more aggressive inlining (-l=3 allows variadic functions)
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// See issue #18116.
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package foo
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func head(xs ...string) string { // ERROR "can inline head" "leaking param: xs to result"
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return xs[0]
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}
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func f() string { // ERROR "can inline f"
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x := head("hello", "world") // ERROR "inlining call to head" "\[\]string literal does not escape"
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return x
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}
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