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cmd/compile: rewrite literal.method to ensure full initialization

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CALLPART of STRUCTLIT did not check for incomplete initialization
of struct; modify PTRLIT treatment to force zeroing.

Test for structlit, believe this might have also failed for
arraylit.

Fixes #18410.

Change-Id: I511abf8ef850e300996d40568944665714efe1fc
Reviewed-on: https://go-review.googlesource.com/34622
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
David Chase 2016-12-23 12:00:07 -05:00
parent a37b9e8e70
commit 41d2278eef
2 changed files with 42 additions and 0 deletions
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2
src/cmd/compile/internal/gc/sinit.go
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@ -1078,6 +1078,8 @@ func anylit(n *Node, var_ *Node, init *Nodes) {
var r *Node
if n.Right != nil {
// n.Right is stack temporary used as backing store.
init.Append(nod(OAS, n.Right, nil)) // zero backing store, just in case (#18410)
r = nod(OADDR, n.Right, nil)
r = typecheck(r, Erv)
} else {